Zero C#

Lower Triangular matrix

2015-04-07T16:25:00.000+05:30

Question: Program to print the lower triangular matrix.

To print the Lower Triangle of the matrix first of all take the order of matrix it must be square, so, number of row and column oh the matrix is same, after that enter the element of the matrix after that print the matrix on the console.

Code Snippet:

using System;
public class LowTrn
{
public static void Main()
{
int i, j, row, col;
int[,] matA = new int[10,10];
Console.Write("\nEnter the no. of row: ");
i=Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of col: ");
j=Convert.ToInt16(Console.ReadLine());
Console.WriteLine("\nEnter the Element in Matrix: ");
for(row=0; row<i; row++)
{
for(col = 0; col<j; col++)
{
Console.Write("Matrix A[{0},{1}]: ", row, col);
matA[row,col]= Convert.ToInt16(Console.ReadLine());
}
Console.WriteLine();
}
Console.WriteLine("\nMatrix A: ");
for(row=0; row<i; row++)
{
for(col = 0; col<j; col++)
Console.Write("{0:D2} ", matA[row,col]);
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("\nLower triangle of Matrix A:");
for(row=0;row<i; row++)
{
for(col=0;col<j; col++)
{
matA[row,col] = (row < col)? 0 : matA[row,col];
Console.Write("{0} ",matA[row,col]);
}
Console.WriteLine();
}
Console.ReadLine();
}
}

** Complete code

Logic:

for(row=0;row<i; row++)
{
for(col=0;col<j; col++)
{
matA[row,col] = (row < col)? 0 : matA[row,col];
Console.Write("{0} ",matA[row,col]);
}
Console.WriteLine();

Description:

In the above, if the number of column is greater than the row than 0 will be print other wise element of the matrix remain same as it is.

Screenshot:

Lower triangle of matrix

Read Also:

Upper Triangle of a matrix

Upper triangular matrix

2015-04-06T15:59:00.003+05:30

Question: Program to print the upper triangular matrix.

To print the upper triangle matrix first of all take the order of matrix it must be square, so, number of row and column oh the matrix is same, after that enter the element of the matrix after that print the matrix on the console.

Code Snippet:

using System;
public class UprTrn
{
public static void Main()
{
int i, j, row, col;
int[,] matA = new int[10,10];
Console.Write("\nEnter the no. of row: ");
i=Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of col: ");
j=Convert.ToInt16(Console.ReadLine());
Console.WriteLine("\nEnter the Element in Matrix: ");
for(row=0; row<i; row++)
{
for(col = 0; col<j; col++)
matA[row,col]= Convert.ToInt16(Console.ReadLine());
Console.WriteLine();
}
Console.WriteLine("\nMatrix A: ");
for(row=0; row<i; row++)
{
for(col = 0; col<j; col++)
Console.Write("{0:D2} ", matA[row,col]);
Console.WriteLine();
}
Console.WriteLine("\nUpper triangle of Matrix A:");
for(row=0;row<i; row++)
{
for(col=0;col<j; col++)
{
matA[row,col] = (row<=col)? matA[row,col] : 0;
Console.Write("{0} ",matA[row,col]);
}
Console.WriteLine();
}
Console.ReadLine();
}
}

** Complete code

Logic:

To print the upper triangular matrix we check the no. of current row and column is the no. of current row is greater that the no. of column than 0 will be printed other wise matrix remain as it is.

for(row=0;row<i; row++)
{
for(col=0;col<j; col++)
{
matA[row,col] = (row<=col)? matA[row,col] : 0;
Console.Write("{0} ",matA[row,col]);
}
Console.WriteLine();
}

Screenshot:

Upper triangular matrix

Read Also:

Largest element in Matrix
Diagonal Exchange in Matrix

Largest element in Matrix

2015-04-06T00:11:00.000+05:30

Question: Program to find the largest element in the matrix.

To find the largest element of the matrix we simply take a variable temp and store the remporary value of matrix in it anf aftert every comparison we change them accourding to given condition.

First of all take a matrix, declare the order of matrix and after that enter the element in the matrix after that do the operation to find out the largest element in the matrix

Code Snippet:

using System;
public class LarEle
{
public static void Main()
{
int[,] matA = new int[10,10];
int i, j, row, col;
Console.Write("\nEnter the no. of row: ");
i=Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of col: ");
j=Convert.ToInt16(Console.ReadLine());
Console.WriteLine("\nEnter the element in Matrix: ");
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
matA[row,col]=Convert.ToInt32(Console.ReadLine());
Console.WriteLine();
}
Console.WriteLine("\nMatrix A: ");
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
Console.Write(" {0}", matA[row,col]);
Console.WriteLine();
}
int big = matA[0,0];
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
if(big < matA[row,col])
big=matA[row,col];
}
Console.Write("\nLargest element in matrix A is: {0}", big);
Console.ReadLine();
}
}

Screenshot of output:

Output of Program

Read Also:
Diagonal Exchange in C#

Diagonal Exchange in Matrix

2015-04-05T21:08:00.000+05:30

Question: Program to exchange the diagonal of a matrix.

Diagonal Exchange of matrix

In the diagonal exchange matrix we exchange the two diagonal of a single matrix. To do this first of all we check the no. of row and column of the matrix if the no. of row and column of the matrix is not equal then the diagonal exchange is not possible b'coz in the diagonal exchange matrix it is compulsory that the no. of row and column is equal, only square matrix are perform the diagonal exchange operation. So, after check whether the order of the matrix is equal or not we enter the element in the matrix after that diagonal exchange matrix operations are done.

Code Snippet:

using System;
public class DiagExc
{
public static void Main()
{
int[,] matA = new int[10,10];
int i, j, row, col, temp;
Console.Write("Enter the no. of row: ");
i = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the no. of col: ");
j = Convert.ToInt32(Console.ReadLine());
if(i != j)
{
Console.WriteLine("Diagonal exchange is not possible.");
}
else
{
Console.WriteLine("Enter the element of the matrix: ");
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
{
Console.Write("Matrix A [{0},{1}] : ", row, col);
matA[row,col]=Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("Matrix A:");
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
Console.Write("{0} ", matA[row,col]);
Console.WriteLine();
}
Console.ReadLine();
for(row=0; row<i; row++)
{
temp = matA[row,row];
matA[row,row]=matA[row,i-row-1];
matA[row,i-row-1] = temp;
}
Console.WriteLine("Matrix after exchanging the diagonals: ");
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
Console.Write("{0} ",matA[row,col]);
Console.WriteLine();
}
}
Console.ReadLine();
}
}

** Complete code

Diagonal exchange operation:

for(row=0; row<i; row++)
{
temp = matA[row,row];
matA[row,row]=matA[row,i-row-1];
matA[row,i-row-1] = temp;
}

Screenshot:

Output of diagonal exchange matrix

Read Also:

Skew symmetric matrix in C#

Pattern program in C#

Introduction to matrix in C#

Skew Symmetric Matrix in C#

2015-04-02T18:35:00.000+05:30

Introduction:

A square matrix A = [aij] is said to be skew symmetric matrix if A' = -A , that is aji = -aij for all possible values of i an dj. Now, if we put i=j, we have
aii = -aii. Therefore 2aii = 0 or aii = 0 for all i's. This means that all the diagonal element of a skew symmetric matrix are zero.

For example:

Fig: Skew Symmetric matrix

Code snippet:

using System;
public class SkewSymmetry
{
public static void Main()
{
int[,] matA = new int[10,10];
int[,] matB = new int[10,10];
int[,] matC = new int[10,10];
bool isSkew = true;
int i, j, ord;
Console.Write("Enter the order of Matrix A: ");
ord = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("\nEnter the Element of Matrix: ");
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
Console.Write("Matrix[{0},{1}] : ", i, j);
matA[i,j]=Convert.ToInt32(Console.ReadLine());
}
}
Console.ReadLine();
Console.WriteLine("Matrix A: ");
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
Console.Write(" {0}", matA[i,j]);
}
}
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
matB[i,j] = matA[i,j] * (-1);
}
}
Console.WriteLine("Matrix A' : ");
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
Console.Write(" {0}", matA[j,i]);
}
}
Console.ReadLine();
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
matC[i,j] = matA[j,i];
}
}
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
if(matC[i,j] != matB[i,j])
{
isSkew = false;
break;
}
}
}
if(isSkew == false)
{
Console.WriteLine("Not Skew Symmetric");
}
else
{
Console.WriteLine("The matrix is Skew Symmetric");
}
Console.ReadLine();
}
}

** Complete code

Description:

In the above code first of all we ask user to input the order of matrix after that we enter the element of the matrix and we print the matrix on the console. there are three 2-dimensional array in the above code matA, matB, matC. MatA is the main 2-dimensional array on which we apply the transpose operation. To do this firstly we copy all the element of matA to matC now multiply the matC[] to -1 after matA[] is going to the transpose operation.

Console.WriteLine("Matrix A' : ");
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
Console.Write(" {0}", matA[j,i]);
}
}
Console.ReadLine();
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
matC[i,j] = matA[j,i];
}
}
for(i = 0; i<ord; i++)
{
Console.WriteLine();
for(j = 0; j<ord; j++)
{
if(matC[i,j] != matB[i,j])
{
isSkew = false;
break;
}
}
}
if(isSkew == false)
{
Console.WriteLine("Not Skew Symmetric");
}
else
{
Console.WriteLine("The matrix is Skew Symmetric");
}

In this code:

the transpose of matrix is copied in matC[] aafter that we compare matB[] and matC[] and according result answer print in console.

Logic:

Step 1: matA[i,j];

Step 2: matB[i,j] = matA[i,j];

Step 3: matB[i,j] = matB[i,j] * (-1);

Step 3: matA'[i,j];

Step 4: matC[i,j] = matA'[i,j];

Step 5: compare (matB[i,j] == matC[i,j]);

Step 6: if yes

matrix is symmetric;

Step 7: else

not symmetric matrix

Screenshots:

Screenshot of Output

Read Also:

Transpose of Matrix in C#

Symmetric Matrix in C#

Symmetric Matrix

2015-04-01T11:09:00.001+05:30

Question: Program to check whether the matrix is symmetric or not.

Symmetric matrix:
A square matrix A = [aij] is said to be symmetric if A' = A, that is [aij]= [aji] for all possible value of i and j. For Example

Code Snippet:

using System;
public class SkewSymmetric
{
public static void Main()
{
int i, j, ord;
int[,] matA = new int[10,10];
int[,] matB = new int[10,10];
int[,] matC = new int[10,10];
bool isSymmetry = true;
Console.Write("Enter the order of square matrix. ");
ord = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter the element of the matrix");
for(i = 0; i<ord; i++)
{
for(j = 0; j<ord; j++)
{
Console.Write("Matrix A[{0},{1}] : ", i, j);
matA[i,j] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("Matrix A: ");
for(i = 0; i<ord; i++)
{
for(j = 0; j<ord; j++)
{
Console.Write("{0} ", matA[i,j]);
}
Console.WriteLine();
}
Console.ReadLine();
for(i = 0; i<ord; i++)
{
for(j = 0; j<ord; j++)
{
matC[i,j] = matA[i,j];
}
Console.WriteLine();
}
Console.WriteLine("Matrix A' ");
for(i = 0; i<ord; i++)
{
for(j = 0; j<ord; j++)
{
Console.Write("{0} ", matA[j,i]);
}
Console.WriteLine();
}
Console.ReadLine();
for(i = 0; i<ord; i++)
{
for(j = 0; j<ord; j++)
{
matB[i,j] = matA[j,i];
}
Console.WriteLine();
}
for(i = 0; i<ord; i++)
{
for(j = 0; j<ord; j++)
{
if(matB[i,j] != matC[i,j] )
{
isSymmetry = false;
break;
}
}
Console.WriteLine();
}
if(isSymmetry == false)
{
Console.WriteLine("Not Symmetric");
}
else
{
Console.WriteLine("The matrix is Symmetric");
}
Console.ReadLine();
}
}

** Complete code

Description:

In the above code first of all we ask user to input the order of matrix after that we enter the element of the matrix and we print the matrix on the console. there are three 2-dimensional array in the above code matA, matB, matC. MatA is the first 2-dimensional array by which we know whether the matrix is symmetric or not. To do this firstly we eneter all the element of matA to matC after that it is going to the transpose operation after the transpose operation done the value of MatA' is store in the matB.

for(i = 0; i<ord; i++)
{
for(j = 0; j<ord; j++)
{
if(matB[i,j] != matC[i,j] )
{
isSymmetry = false;
break;
}
}
Console.WriteLine();
}
if(isSymmetry == false)
{
Console.WriteLine("Not Symmetric");
}
else
{
Console.WriteLine("The matrix is Symmetric");
}

The above code is the Condition of symmetric matrix here we check matB[i,j] is equals to the matC[i,j], if each element of matB is equal to the matC than the matrix is symmetric other wise not.

Logic:

Step 1: matA[,];

Step 2: matC[,] = matA[,];

Step 3: matA'[,];

Step 4: matB[,] = matA'[,];

Step 5: matB[,] == matC[,];

Step 6: if yes

matrix is symmetric;

Step 7: else

not symmetric matrix

Screenshot of Output:

Read Also:

Transpose of matrix in C#

Transpose of Matrix

2015-03-31T15:00:00.000+05:30

Question: Program to transpose a matrix.

Definition: If A matrix be an m x n matrix, then the matrix obtained by interchanging the rows and columns of A is called the transpose of matrix A. Transpose of the matrix A is denoted by A'. In other words, if A is the order of m x n. then A' is the order of n x m.

Properties of transpose of matrix:

(A')' = A
(k A)' = kA'
(A + B)' = A' +B'
(AB)' = B' A'

Code Snippet:

using System;
public class TransMat
{
public static void Main()
{
int m, n, row, col;
int[,] matA = new int[10,10];
Console.Write("\nEnter the no. of row: ");
m = Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of col: ");
n = Convert.ToInt16(Console.ReadLine());
Console.WriteLine("\nEnter the element in the matrix: ");
for(row=1; row<=m; row++)
{
for(col = 1; col<=n; col++)
{
Console.Write("Matrix A[{0},{1}]: ", row, col );
matA[row,col] = Convert.ToInt16(Console.ReadLine());
}
Console.WriteLine();
}
Console.WriteLine("Matrix A :");
for(row=1; row<=m; row++)
{
for(col = 1; col<=n; col++)
Console.Write("{0:D2} ", matA[row,col]);
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("Matrix A\':");
for(row=1; row<=n; row++)
{
for(col = 1; col<=m; col++)
Console.Write("{0:D2} ", matA[col,row]);
Console.WriteLine();
}
Console.ReadLine();
}
}

** Complete code

Description:

To transpose the matrix we simply change the rows into columns and columns into row.

for(row=1; row<=n; row++)
{
for(col = 1; col<=m; col++)
Console.Write("{0:D2} ", matA[col,row]);
Console.WriteLine();
}

In the above code n is the number of columns which refers the row now and m is the number of row which refers the columns now.

Screenshot of Output:

Read Also:
Interchange operation in Matrix

Interchange operation in Matrix

2015-03-31T07:18:00.001+05:30

Row Interchange:

Question: Program to interchange the row in the matrix.

In this question first of all we declare the order of the matrix and after that we enter the element in the matrix after that we print the matrix on the screen before going to the interchange operation after that user enter the no. of row1 and no. of row2 which S/he want to interchange after that we perform the interchange operation.

Code snippet:

using System;
public class IntRow
{
public static void Main()
{
int m,n, row, col;
int[,] matA = new int[10,10];
Console.Write("\nEnter the no. of row: ");
m=Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of col: ");
n=Convert.ToInt16(Console.ReadLine());
Console.WriteLine("\nEnter the element in MatrixA: ");
for(row=1; row<=m; row++)
{
for(col=1; col<=n; col++)
{
Console.Write("Matrix A[{0},{1}]: ", row, col);
matA[row,col] = Convert.ToInt16(Console.ReadLine());
}
Console.WriteLine();
}
Console.WriteLine("MatrixA: ");
for(row=1; row<=m; row++)
{
for(col=1; col<=n; col++)
Console.Write("{0:D2} ",matA[row,col]);
Console.WriteLine();
}
Console.ReadLine();
Console.Write("\nEnter the no. of row you want to interchange: ");
int i = Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of row you want to interchange with: ");
int j = Convert.ToInt16(Console.ReadLine());
for(int k=1; k<=n; k++)
{
int temp = matA[i,k];
matA[i,k] = matA[j,k];
matA[j,k] = temp;
}
Console.WriteLine("\nMatrixA after interchange of row:{0} and row {1}: ", i, j);
for(row=1; row<=m; row++)
{
for(col=1; col<=n; col++)
Console.Write("{0:D2} ",matA[row,col]);
Console.WriteLine();
}
Console.ReadLine();
}
}

Row interchange operation:

for(int k=1; k<=n; k++)
{
int temp = matA[i,k];
matA[i,k] = matA[j,k];
matA[j,k] = temp;
}

in the above we take a third variable temp and simply interchange the element of the desired row by the using of temp variable.

Screenshot of the output:

Column Interchange:

Question: Program to interchange column of a matrix.

In this question first of all we declare the order of the matrix and after that we enter the element in the matrix after that we print the matrix on the screen before going to the interchange operation after that user enter the no. of col1 and no. of col2 which S/he want to interchange after that we perform the interchange operation.

Code Snippet:

using System;
public class IntCol
{
public static void Main()
{
int m,n, row, col;
int[,] matA = new int[10,10];
Console.Write("\nEnter the no. of row: ");
m=Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of col: ");
n=Convert.ToInt16(Console.ReadLine());
Console.WriteLine("\nEnter the element in MatrixA: ");
for(row=1; row<=m; row++)
{
for(col=1; col<=n; col++)
{
Console.Write("Matrix A[{0},{1}] :", row, col);
matA[row,col] = Convert.ToInt16(Console.ReadLine());
}
Console.WriteLine();
}
Console.WriteLine("MatrixA: ");
for(row=1; row<=m; row++)
{
for(col=1; col<=n; col++)
Console.Write("{0:D2} ",matA[row,col]);
Console.WriteLine();
}
Console.ReadLine();
Console.Write("\nEnter the no. of col you want to interchange: ");
int i = Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of col you want to interchange with: ");
int j = Convert.ToInt16(Console.ReadLine());
for(int k=1; k<=n; k++)
{
int temp = matA[k,i];
matA[k,i] = matA[k,j];
matA[k,j] = temp;
}
Console.WriteLine("\nMatrixA after interchange of col:{0} and col:{1}: ", i, j);
for(row=1; row<=m; row++)
{
for(col=1; col<=n; col++)
Console.Write("{0:D2} ",matA[row,col]);
Console.WriteLine();
}
Console.ReadLine();
}
}

Column interchange operation:

for(int k=1; k<=n; k++)
{
int temp = matA[k,i];
matA[k,i] = matA[k,j];
matA[k,j] = temp;
}

in the above we take a third variable temp and simply interchange the element of the desired row by the using of temp variable.

Diagonal Exchange:

Question: Program to interchange the diagonal of a matrix.

In this question first of all we check whether the order is same or not if the order is same than exchange operation is occur otherwise not. After that we enter the element in the matrix after that we print the matrix on the screen.

Code Snippet:

using System;
public class DiagExc
{
public static void Main()
{
int[,] matA = new int[10,10];
int i, j, row, col, temp;
Console.Write("Enter the no. of row: ");
i = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the no. of col: ");
j = Convert.ToInt32(Console.ReadLine());
if(i != j)
{
Console.WriteLine("Diagonal exchange is not possible.");
}
else
{
Console.WriteLine("Enter the element of the matrix: ");
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
{
Console.Write("Matrix A [{0},{1}] : ", row, col);
matA[row,col]=Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("Matrix A:");
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
Console.Write("{0} ", matA[row,col]);
Console.WriteLine();
}
Console.ReadLine();
for(row=0; row<i; row++)
{
temp = matA[row,row];
matA[row,row]=matA[row,i-row-1];
matA[row,i-row-1] = temp;
}
Console.WriteLine("Matrix after exchanging the diagonals: ");
for(row=0; row<i; row++)
{
for(col=0; col<j; col++)
Console.Write("{0} ",matA[row,col]);
Console.WriteLine();
}
}
Console.ReadLine();
}
}

Diagonal Exchange Operation:

for(row=0; row<i; row++)
{
temp = matA[row,row];
matA[row,row]=matA[row,i-row-1];
matA[row,i-row-1] = temp;
}

Screenshot of Output 1:

Screenshot of Output 2:

Read Also:
Pattern Programming in C#
Array using Command

Even and odd element in matrix

2015-03-25T14:40:00.001+05:30

Question: Program to find the number of even and odd elements in the matrix.

In this type of questions where we have to find the number of element we use a counting variable e.g count who count the number of occurrence. In this type of matrix questions first of all we declare the order of matrix after the matrix are ready we count the number of occurrence of the element according to the given condition.

Code snippet :

using System;
public class findEle
{
public static void Main()
{
int i, j, row, col, odd=0, even=0;
int[,] matA = new int[10,10];
Console.Write("Enter the no. of row: ");
row=Convert.ToInt16(Console.ReadLine());
Console.Write("Enter the no. of col: ");
col=Convert.ToInt16(Console.ReadLine());
Console.WriteLine("\nEnter the element in the matrix: ");
for(i=0; i<row; i++)
{
for(j=0; j<col; j++)
{
Console.Write("Matrix [{0},{1}] : ", i,j);
matA[i,j] = Convert.ToInt16(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("\nMatrix: ");
for(i=0; i<row; i++)
{
for(j=0; j<col; j++)
{
Console.Write("{0} ",matA[i,j]);
}
Console.WriteLine();
}
Console.ReadLine();
for(i=0; i<row; i++)
{
for(j=0; j<col; j++)
{
if(matA[i,j]%2 == 0)
even++;
else
odd++;
}
}
Console.WriteLine("Total even numbers in matrix is:{0} ", even);
Console.WriteLine("Total odd numbers in matrix is: {0}", odd);
Console.ReadLine();
}
}

** Complete code

Description:
In the above code first of all we ask user to input the order of matrix after that we enter the element of the matrix and after that we print the matrix on the console after that we setup the logic of counting number of occurrence of even and odd elements of the matrix.

for(i=0; i<row; i++)
{
for(j=0; j<col; j++)
{
if(matA[i,j]%2 == 0)
even++;
else
odd++;
}
}

in the above code we declare two variable even and odd and according to the question there is one increment on even when there is a even element in the matrix same for the odd element of the matrix.

Screenshot of output:

Read also:-

Sum of diagonal of resultant marix
VARARGS
Array in C#

Addition and subtraction of matrices

2015-03-25T09:56:00.001+05:30

Question: Program to addition and subtraction of two matrix and sum of their diagonal.

Rules for matrix Addition:

1. In matrix addition, if matrix A and matrix B are in the same order (row,column). Then, the sum of two matrix is possible.

Matrix C = Matrix A + Matrix B for the same order i.e M x N.

2. Addition of matrices is an example of binary operation on the set of matrices of same order.
3. Let A and B are two matrices

A + B = B + A
A + 0 = 0 + A = A
0 + 0 = 0

Rules for Matrix Subtraction

1. In matrix subtraction, we follow the same rule, if matrix A and matrix B are in the same order (row,column). Then , the subtraction of two matrix is possible.

Matrix C = Matrix A - Matrix B for the same order i.e M x N.

2. Subtraction of matrices is an example of binary operation on the set of matrices of same order.

Code Snippet:

using System;
public class AddSub
{
int m,n,row,col;
int[,] matA = new int[10,10];
int[,] matB = new int[10,10];
int[,] matC = new int[10,10];
public AddSub(int i, int j)
{
m=i;
n=j;
}
public void readMat()
{
Console.WriteLine("Enter the Element of matrix A: ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
Console.Write("matA[{0},{1}] : ",row,col);
matA[row,col]=Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("Enter the Element of matrix B: ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
Console.Write("matB[{0},{1}] : ",row,col);
matB[row,col]=Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
}
public void printMat()
{
Console.WriteLine("Matrix A");
for(row=0; row<m; row++)
{
for(col=0; col<m; col++)
Console.Write("{0} ",matA[row,col]);
Console.WriteLine();
}
Console.WriteLine("Matrix B");
for(row=0; row<m; row++)
{
for(col=0; col<m; col++)
Console.Write("{0} ",matB[row,col]);
Console.WriteLine();
}
}
public void Operation()
{
Console.Write("Type \"Add\" for Addition and \"Sub\" for Substraction : ");
string response = Console.ReadLine();
response = response.ToUpper();
switch(response)
{
case "ADD":
{
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
matC[row,col] += matA[row,col]+matB[row,col];
}
}
Console.WriteLine("Resultant is: ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
Console.Write("{0:D2} ", matC[row,col]);
}
Console.WriteLine();
}
Console.ReadLine();
break;
}
case "SUB":
{
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
matC[row,col] -= matA[row,col]-matB[row,col];
}
}
Console.WriteLine("Resultant is: ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
Console.Write("{0:D2} ", matC[row,col]);
}
Console.WriteLine();
}
Console.ReadLine();
break;
}
default:
Console.WriteLine("Enter valid Word");
break;
}
}
public void DiaSum()
{
int res=0;
Console.WriteLine("Sum of resultant diagonal is : ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
if(row==col)
res += matC[row,col];
}
}
Console.WriteLine("{0}", res);
}
public static void Main()
{
int i,j;
Console.Write("Enter the no. of row: ");
i=Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the no. of col: ");
j=Convert.ToInt32(Console.ReadLine());
AddSub AS = new AddSub(i,j);
AS.readMat();
AS.printMat();
AS.Operation();
AS.DiaSum();
Console.ReadLine();
}
}

** Complete Code

Description:

First of all we declare some variable m, n, row, col of type int and three matrices matA, matB, matC. After declaring variables and create constructor we create four methods readMat(), printMat(), Operation(), DiaSum(). readMat() method are use to entering the elements on matrix A and matrix B according to their order declare in main() method. Method printMat() use to print the matrix A and matrix B on the console after that Operation method is call for doing operation of addition and subtraction.

1. readMat()

public void readMat()
{
Console.WriteLine("Enter the Element of matrix A: ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
Console.Write("matA[{0},{1}] : ",row,col);
matA[row,col]=Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("Enter the Element of matrix B: ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
Console.Write("matB[{0},{1}] : ",row,col);
matB[row,col]=Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
}

2. printMat()

public void printMat()
{
Console.WriteLine("Matrix A");
for(row=0; row<m; row++)
{
for(col=0; col<m; col++)
Console.Write("{0} ",matA[row,col]);
Console.WriteLine();
}
Console.WriteLine("Matrix B");
for(row=0; row<m; row++)
{
for(col=0; col<m; col++)
Console.Write("{0} ",matB[row,col]);
Console.WriteLine();
}
}

3.Operation()

public void Operation()
{
Console.Write("Type \"Add\" for Addition and \"Sub\" for Substraction : ");
string response = Console.ReadLine();
response = response.ToUpper();
switch(response)
{
case "ADD":
{
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
matC[row,col] += matA[row,col]+matB[row,col];
}
}
Console.WriteLine("Resultant is: ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
Console.Write("{0:D2} ", matC[row,col]);
}
Console.WriteLine();
}
Console.ReadLine();
break;
}
case "SUB":
{
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
matC[row,col] -= matA[row,col]-matB[row,col];
}
}
Console.WriteLine("Resultant is: ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
Console.Write("{0:D2} ", matC[row,col]);
}
Console.WriteLine();
}
Console.ReadLine();
break;
}
default:
Console.WriteLine("Enter valid Word");
break;
}
}

4. Diasum() : This method is use for print the sum of diagonal of resultant matrix C

public void DiaSum()
{
int res=0;
Console.WriteLine("Sum of resultant diagonal is : ");
for(row=0; row<m; row++)
{
for(col=0; col<n; col++)
{
if(row==col)
res += matC[row,col];
}
}
Console.WriteLine("{0}", res);
}

Screenshot of output:

Read also:-

Run C# in console.

Identity matrix in C#

2015-03-24T09:54:00.000+05:30

Question: Program to check whether the matrix is Identity or not.

A matrix is Said to be identity matrix if it satisfied following criteria:

Matrix is Square matrix
Element of diagonal are all 1.
Rest element of matrix excluding diagonal are all zero.

Identity Matrix :

We denote the identity matrix of order n. When order is clear by context, we simply write it as I.

For example:

In the above A, B, C are Identity matrix of order 1, 2, 3 respectively.
Observe that Scalar Matrix is an identity matrix when k = 1. But every Identity matrix is clearly a scalar matrix.

Code Snippet:

using System;
public class IdtMat
{
public static void Main()
{
int i, row, col;
Console.Write("\nEnter the no. of rows and cols : ");
i = Convert.ToInt32(Console.ReadLine());
int[,] matA = new int[i, i];
Console.WriteLine("\nEnter the Elements in Matrix:\n");
for(row = 0; row < i; row++)
{
for(col = 0; col < i; col++)
{
Console.Write("A[{0}, {1}] = ", row, col);
matA[row,col]= Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.WriteLine("Matrix A:\n");
for(row = 0; row < i; row++)
{
for(col = 0; col < i; col++)
Console.Write("{0, 2} ", matA[row,col]);
Console.WriteLine();
}
bool isIdentity = true;
for(row = 0; row < i; row++)
{
for(col = 0; col < i; col++)
{
if ((row == col && matA[row, col] != 1) ||
(row != col && matA[row, col] != 0))
{
isIdentity = false;
break;
}
}
}
if(isIdentity)
{
Console.WriteLine("\nIdentity Matrix");
}
else
{
Console.WriteLine("\nNot an Identity Matrix");
}
Console.ReadKey(true);
}
}

** Complete code

Description:

In the above code first of all we declare some variable row, col, i to read and write the matrix we take a 2-dimensional array of matA and a bool variable which is initialize to true.

First of all we enter the no. of row and column in Line 9,10,11 . After that we enter the element of matrix and print the matrix.

for(row = 0; row < i; row++)
{
for(col = 0; col < i; col++)
{
if ((row == col && matA[row, col] != 1) ||
(row != col && matA[row, col] != 0))
{
isIdentity = false;
break;
}
}
}

In the above piece of code we design the logic of Identity matrix if i and j equal to each other i.e (1,1) (2,2) (3,3) then "1" is print or if i and j not equals to each other and if elements of matrix not equals to 0 than ths IsIdentity bool value changed to false.

Screenshot of output:

Read Also:
Types of matrix in C#

Scalar Matrix in C#

2015-03-23T20:09:00.001+05:30

Question: Program to check whether the given matrix is scalar or not.

A Diagonal matrix is said to be scalar matrix if its diagonal elements are equals that is, A square matrix is said to be scalar if all non diagonal elements is equals to zero and all diagonal elements is equals to k, where k is some constant value.

For example:

The above three matrix are scalar matrix of order 1, 2, 3 respectively.

Code Snippet:

using System;
public class Scalar
{
public static void Main()
{
int row, col, i, j;
int[,] matA = new int[10,10];
bool IsScalar = true;
Console.Write("\nEnter the row: ");
row = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the col: ");
col = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("\nEnter the element of Matrix: ");
for(i=1; i<=row; i++)
{
for(j = 1; j<=col; j++)
{
Console.Write("Matrix A[{0},{1}]: ", i, j);
matA[i,j] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.ReadLine();
Console.WriteLine("Matrix A: ");
for(i=1; i<=row; i++)
{
for(j = 1; j<=col; j++)
{
Console.Write("{0} ", matA[i,j]);
}
Console.WriteLine();
}
Console.ReadLine();
for(i=1; i<=row; i++)
{
for(j = 1; j<=col; j++)
{
if( ( (i == j) && (matA[i,j] != matA[1,1]) ) || ( (i != j) && (matA[i,j]!= 0) ) )
{
IsScalar = false;
break;
}
}
}
if(IsScalar==true)
{
Console.WriteLine("The given matrix is Scalar matrix");
}
else
{
Console.WriteLine("The given matrix is not a Scalar matrix");
}
Console.ReadLine();
}
}

** Complete code

Description:

In the above code first of all we declare some variable row, col, i, j to read and write the matrix we take a 2-dimensional array of matA and a bool variable which is initialize to true.

First of all we enter the no. of row and column in Line 10 to 13 remember the no, of row and column must be equal. After that we enter the element of matrix and print the matrix.

for(i=1; i<=row; i++)
{
for(j = 1; j<=col; j++)
{
if( ( (i == j) && (matA[i,j] != matA[1,1]) ) || ( (i != j) && (matA[i,j]!= 0) ) )
{
IsScalar = false;
break;
}
}
}

In the above piece of code we design the logic of scalar number if i and j equal to each other i.e (1,1) (2,2) (3,3) and if it is not equals to first element of the matrix placed at the position of (1,1) or if i and j not equals to each other and if elements of matrix not equals to 0 than ths IsScalar bool value changed to false.

if(IsScalar ==true)
{
Console.WriteLine("The given matrix is Scalar matrix");
}
else
{
Console.WriteLine("The given matrix is not a Scalar matrix");
}

if IsScalar is remain true then the matrix is scalar matrix else "not scalar matrix" statement print on console.

Screenshot of Output:

Read Also:-

Row, Column and square matrix in C#

Zero matrix in C#

Diagonal matrix in C#

Introduction to matrix in C#

Row, Column and Square Matrix in C#

2015-03-23T08:30:00.000+05:30

Question: Program to check whether the matrix is row matrix or columns matrix or the square matrix.

Row Matrix: A matrix is said to be row matrix if it has only one row. A matrix of order 1 x n is the row matrix.

For example:

Column Matrix : A matrix is said to be column matrix if it has only one column. A matrix of order m x 1 is the column matrix.

For example:

Square Matrix: A matrix in which the no. of row is equals to the no. of column is said to be a Square matrix. Thus an m x n matrix is said to be square matrix if m = n and is known as square matrix of order n.

For example:

Code Snippet:

using System;
public class MatType
{
public static void Main()
{
int row, col;
int[,] matA = new int[10,10];
Console.Write("Enter the Row: ");
row = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the Col: ");
col = Convert.ToInt32(Console.ReadLine());
if(row == 1)
{
Console.WriteLine("It is a Row matrix.");
}
else if(col == 1)
{
Console.WriteLine("It is a Column matrix.");
}
else if(row == col)
{
Console.WriteLine("It is a Square matrix.");
}
else
{
Console.WriteLine("The given matrix is the simple matrix.");
}
Console.WriteLine("The matrix is: ");
for(int i = 1; i<=row; i++)
{
for(int j= 1 ; j<=col; j++)
{
Console.Write("Matrix A[{0},{1}]", i, j);
matA[i,j] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
for(int i = 1; i<=row; i++)
{
for(int j= 1 ; j<=col; j++)
{
Console.Write("{0} ", matA[i,j]);
}
Console.WriteLine();
}
Console.ReadLine();
}
}

** Complete code

Description:

In the above code we simply check the condition for row matrix, column matrix and square matrix from line 14 to 29.

Screenshot of Output:

Zero Matrix or null matrix

2015-03-22T21:46:00.000+05:30

Question : Program to check whether the matrix is zero or not.

A matrix is said to be zero matrix if its all elements are zero.

Code Snippet:

using System;
public class ZeroM
{
public static void Main()
{
int i, j, row, col;
bool IsZero = true;
int[,] matA = new int[10,10];
Console.Write("\nEnter the no. of row: ");
row= Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the no. of col: ");
col= Convert.ToInt32(Console.ReadLine());
Console.WriteLine("\nEnter the Element of matrix: ");
for(i = 1; i<=row; i++)
{
for(j=1; j<=col; j++)
{
Console.Write("Matrix A[{0},{1}]: ", i, j);
matA[i,j] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
for(i = 1; i<=row; i++)
{
for(j=1; j<=col; j++)
{
Console.Write("{0} ", matA[i,j]);
}
Console.WriteLine();
}
Console.ReadLine();
for(i = 1; i<=row; i++)
{
for(j=1; j<=col; j++)
{
if(matA[i,j] != 0)
{
IsZero = false;
break;
}
}
}
if(IsZero == true)
{
Console.WriteLine("Zero Matrix");
}
else
{
Console.WriteLine("Not Zero Matrix");
}
Console.ReadLine();
}
}

** Complete code

Description:

In the above code first of all we ask user to take input of row and columns and after that user enter the element after entering elements we print the matrix and after the matrix print we go for the logic behind to find put whether the matrix is zero matrix or not.

for(i = 1; i<=row; i++)
{
for(j=1; j<=col; j++)
{
if(matA[i,j] != 0)
{
IsZero = false;
break;
}
}
}

In the above code we check if any of the element of the matrix is not equal to zero than the IsZero which is a bool variable declare at Line 7 of the original code is changed to false.

After the logical operation we print the final output whether the matrix is zero or not.

if(IsZero == true)
{
Console.WriteLine("Zero Matrix");
}
else
{
Console.WriteLine("Not Zero Matrix");
}

Screenshot of the output:

Diagonal Matrix in C#

2015-03-22T18:40:00.000+05:30

Question: Program to check whether the given matrix is Diagonal or not.

A matrix is said to be diagonal matrix when it satisfied the following conditions :

Order of matrix must be same i.e (3x3) or (4x4) or (2x2) and so on.
Matrix is square matrix also.
All the non-diagonal element of that matrix is zero.
the diagonal of the matrix is the non-zero elements.

For Example,

Diagonal Matrices

the above three diagonal matrices are the order of 1,2,3 respectively.

Code Snippet:

using System;
public class DiagMat
{
public static void Main()
{
int[,] matA = new int[10,10];
bool IsDiag = false;
Console.WriteLine("\nFor Diagonal Matrix Same no. of row and column required.");
Console.Write("\nEnter the no. of row. ");
int row = Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the no. of col. ");
int col = Convert.ToInt32(Console.ReadLine());
// enter the element of the matrix
Console.WriteLine("\nEnter the element");
for(int i = 1; i<=row; i++)
{
for(int j = 1; j<=col; j++)
{
Console.Write("Matrix A[{0},{1}]:", i,j);
matA[i,j]= Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
// Print the matrix
Console.WriteLine("\nMatrix A: ");
for(int i = 1; i<=row; i++)
{
for(int j = 1; j<=col; j++)
{
Console.Write("{0} ", matA[i,j]);
}
Console.WriteLine();
}
Console.ReadLine();
// Check weather the matrix is diagonal or not
for(int i = 1; i<=row; i++)
{
for(int j = 1; j<=col; j++)
{
if((i != j) && (matA[i,j] == 0))
{
IsDiag = true;
}
}
Console.WriteLine();
}
if(IsDiag == true)
{
Console.WriteLine("Diagonal matrix");
}
else
{
Console.WriteLine("Not a Diagonal matrix");
}
}
}

** Complete code

Description:
In the above code first of all we enter the no. of row and column of the matrix (which must be equal) in the line 10 to 14 after that we enter element of the matrix from Line 17 to 26 after that we print the entered matrix and after that we check weather the matrix is diagonal or not to do this we take a bool variable IsDiag and initialize it to false.

for(int i = 1; i<=row; i++)
{
for(int j = 1; j<=col; j++)
{
if((i != j) && (matA[i,j] == 0))
{
IsDiag = true;
}
}
Console.WriteLine();
}

We check a condition in Line 05 that if i is not equal to j and if element of matrix matA[i,j] is zero then the IsDiag condition changed to true. when the loop is completed we go for the next step to print the statement, Matrix is diagonal or not. we do this in the following code

if(IsDiag == true)
{
Console.WriteLine("Diagonal matrix");
}
else
{
Console.WriteLine("Not a Diagonal matrix");
}

in the above code if the IsDiag is equals to true thant the matrix is diagonal matrix otherwise it is not a diagonal matrix.

Screenshot of output:

Screenshot of Output

Matrices

2015-03-21T09:23:00.003+05:30

Definition:

A matrix is an ordered rectangular array of numbers, symbols, expressions and functions.The numbers or functions are called elements or the entries of matrix.
It's also the example of nested loop in programming.

usually matrices are denoted by capital letters. The following are some examples of matrix :

Example of Matrix

Question: Program to Show the matrix addition.

1. In matrix addition, if matrix A and matrix B are in the same order (row,column). Then, the sum of two matrix is possible.

Matrix C = Matrix A + Matrix B for the same order i.e M x N.

2. Addition of matrices is an example of binary operation on the set of matrices of same order.

Code Snippet:

using System;
public class MatAdd
{
public static void Main(string[] args)
{
int row, col, i, j;
Console.Write("Enter the no. of row for matrixA: ");
row=Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the no. of col for matrixA: ");
col = Convert.ToInt32(Console.ReadLine());
int[,] matA = new int[10,10];
Console.WriteLine("\nEnter the element in matrixA: ");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
{
Console.Write("Matrix A [{0},{1}]: "i, j);
matA[i,j] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
int[,] matB = new int[10,10];
Console.WriteLine("\nEnter the element in matrixB: ");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
{
Console.Write("Matrix B [{0},{1}]: "i, j);
matB[i,j] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.WriteLine("Matrix A :");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
Console.Write(" {0}", matA[i,j]);
Console.WriteLine();
}
Console.WriteLine("Matrix B :");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
Console.Write(" {0}", matB[i,j]);
Console.WriteLine();
}
int[,] matC = new int[10,10];
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
matC[i,j] = matA[i,j] + matB[i,j];
}
Console.WriteLine("Addition of matrix is: ");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
Console.Write(" {0:D2}", matC[i,j]);
Console.WriteLine();
}
Console.ReadLine();
}
}

Description:

In the above code, There are two input of matrix, Matrix A and Matrix B, when we Enter the element of the two matrices Matrix C is formed by the resultant sum of element of the two matrices.

Screenshot of Output:

** Screenshot of Addition of matrix

Question: Program to show the Matrix subtraction .

1. In matrix subtraction, we follow the same rule, if matrix A and matrix B are in the same order (row,column). Then , the subtraction of two matrix is possible.

Matrix C = Matrix A - Matrix B for the same order i.e M x N.

2. Subtraction of matrices is an example of binary operation on the set of matrices of same order.

Code snippet:

using System;
public class MatSub
{
public static void Main(string[] args)
{
int row, col, i, j;
Console.Write("Enter the no. of row for matrixA: ");
row=Convert.ToInt32(Console.ReadLine());
Console.Write("Enter the no. of col for matrixA: ");
col = Convert.ToInt32(Console.ReadLine());
int[,] matA = new int[10,10];
Console.WriteLine("\nEnter the element in matrixA: ");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
{
Console.Write("Matrix A[{0},{1}]: ", i, j);
matA[i,j] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
int[,] matB = new int[10,10];
Console.WriteLine("\nEnter the element in matrixB: ");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
{
Console.Write("Matrix B[{0},{1}]: ", i, j);
matB[i,j] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine();
}
Console.WriteLine("Matrix A :");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
Console.Write(" {0}", matA[i,j]);
Console.WriteLine();
}
Console.WriteLine("Matrix B :");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
Console.Write(" {0}", matB[i,j]);
Console.WriteLine();
}
int[,] matC = new int[10,10];
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
matC[i,j] = matA[i,j] - matB[i,j];
}
Console.WriteLine("Subtraction of matrix is: ");
for(i = 0; i<row; i++)
{
for(j=0; j<col; j++)
Console.Write(" {0:D2}", matC[i,j]);
Console.WriteLine();
}
Console.ReadLine();
}
}

Description:

In the above code, There are two input of matrix, Matrix A and Matrix B, when we Enter the element of the two matrices Matrix C is formed by the resultant subtraction of element of the two matrices.

Screenshot of Output:

**Output of Matrix Subtraction

**Note: Program are working on cmd. prompt also

Must See:
How and Why Run C# in cmd

Star Pattern - 8

2015-02-11T18:11:00.000+05:30

Question: Program to print the following Star Pattern.

* * * * * * * * *
* * * * * * *
* * * * *
* * *
*
* * *
* * * * *
* * * * * * *
* * * * * * * * *

Code Snippet:

using System;
public class Pattern
{
public static void Main()
{
int row,col,n,temp,count;
Console.Write("Enter the no. of row: ");
n=Convert.ToInt32(Console.ReadLine());
temp=n;
count=n;
for(row = 1; row<=n; row++)
{
for(col=1; col<row; col++)
Console.Write(" ");
for(col=temp; col>=1; col--)
Console.Write("* ");
for(col = temp-1; col>=1; col--)
Console.Write("* ");
temp--;
Console.WriteLine();
}
for(row=2; row<=n; row++)
{
for(col=1; col<count-1; col++)
Console.Write(" ");
for(col=1; col<=row; col++)
Console.Write("* ");
for(col=1; col<row; col++)
Console.Write("* ");
count--;
Console.WriteLine();
}
Console.ReadLine();
}
}

Fig: Screenshot of output

Number Pattern In C# - 27

2015-02-10T07:45:00.002+05:30

Question: Program to print following pattern.

5
4 5 4
3 4 5 4 3
2 3 4 5 4 3 2
1 2 3 4 5 4 3 2 1

Code Snippet:

using System; public class Pattern { public static void Main() { int i, j, n, temp, count; Console.Write("Enter the no. of row: "); n=Convert.ToInt32(Console.ReadLine()); temp=n; count=n; for(i=n; i>=1; i--) { for(j=1; j<temp; j++) Console.Write(" "); for(j=i; j<=count; j++) Console.Write("{0} ",j); for(j=count-1; j>=i; j--) Console.Write("{0} ",j); temp--; Console.WriteLine(); } Console.ReadLine(); } }

Fig: Screenshot of output

Number pattern in C# - 26

2015-02-08T08:37:00.000+05:30

Question: Program to print the binary Right triangle.

1
1 0
1 0 1
1 0 1 0
1 0 1 0 1

Code Snippet:

using System;
public class Pattern
{
public static void Main()
{
int row, col, n;
Console.Write("Enter the no. of row: ");
n = Convert.ToInt32(Console.ReadLine());
for(row = 1; row <= n; row++)
{
for(col = 1; col <= row; col++)
{
if(col%2 == 0)
Console.Write("0 ");
else
Console.Write("1 ");
}
Console.WriteLine();
}
Console.ReadLine();
}
}

Fig: Screenshot of Output

Number Pattern in C# - 25

2015-02-07T07:25:00.001+05:30

Question: Program to print the following Number Pattern?

01
02 04
03 06 09
04 08 12 16
05 10 15 20 25

Code Snippet:

using System;
public class Pattern
{
public static void Main()
{
int row, col, n, pr;
Console.Write("Enter the no. of row: ");
n = Convert.ToInt32(Console.ReadLine());
for(row = 1; row <= n; row++)
{
pr = 0;
for(col = 1; col <= row; col++)
{
pr = row*col;
Console.Write("{0:D2} ", pr); // convert 1 to 01
}
Console.WriteLine();
}
Console.ReadLine();
}
}

Fig: Screenshot of output

Number Pattern in C# - 24

2015-02-01T08:06:00.000+05:30

Question: Program to print the following pattern.

5
4 5
3 4 5
2 3 4 5
1 2 3 4 5

Code Snippet:

using System;
public class pattern
{
public static void Main()
{
int row, col, n;
Console.Write("Enter th eno. of row: ");
n=Convert.ToInt32(Console.ReadLine());
int temp=n;
for(row=1; row<=n; row++)
{
for(col = temp; col<=n; col++)
Console.Write("{0} ",col);
temp--;
Console.WriteLine();
}
Console.ReadLine();
}
}

Fig: Screenshot of output

Number Pattern in C# - 23

2015-02-01T07:57:00.000+05:30

Question: Program to print the following Pattern.

9
8 9 8
7 8 9 8 7
6 7 8 9 8 7 6

Code Snippet:

using System;
public class Pattern
{
public static void Main()
{
int row, col, n, temp=9,count;
Console.Write("Enter the no. of row: ");
n=Convert.ToInt32(Console.ReadLine());
count=temp;
for(row = 1; row<=n; row++)
{
for(col = count; col<=temp; col++)
Console.Write("{0} ",col);
for(col=temp-1; col>=count; col--)
Console.Write("{0} ",col);
count--;
Console.WriteLine();
}
Console.ReadLine();
}
}

Fig: Screenshot of output

Number Pattern in C# - 22

2015-02-01T07:45:00.000+05:30

Question: Program to print the following Pattern.

1
2 2 2
3 3 3 3 3
4 4 4 4 4 4 4

Code Snippet:

using System;
public class Pattern
{
public static void Main()
{
int row, col, n;
Console.Write("Enter the no. of row: ");
n=Convert.ToInt32(Console.ReadLine());
for(row=1; row<=n; row++)
{
for(col = 1; col<=n-row; col++)
Console.Write(" ");
for(col=1; col<=row; col++)
Console.Write("{0} ", row);
for(col=1;col<row; col++)
Console.Write("{0} ", row);
Console.WriteLine();
}
Console.ReadLine();
}
}

Fig: Screenshot of the output

Number Pattern in C# - 21

2015-02-01T07:33:00.001+05:30

Question: Program to print the following pattern.

12344321
123321
1221
11

Code Snippet:

using System;
public class Pattern
{
public static void Main()
{
int row, col, n;
Console.Write("Enter the row: ");
n=Convert.ToInt32(Console.ReadLine());
int temp = n;
for(row=n; row>=1; row--)
{
for(col = 1; col<=temp; col++)
Console.Write("{0} ", col);
for(col=temp; col>=1; col--)
Console.Write("{0} ", col);
temp--;
Console.WriteLine();
}
Console.ReadLine();
}
}

Fig: Screenshot of Output

Number pattern in C# - 20

2015-02-01T07:22:00.000+05:30

Question: Program to print the following pattern.

1234554321
1234__4321
123____321
12______21
1________1

Code Snippet:

using System;
public class Pattern
{
public static void Main()
{
int row,col,n;
Console.Write("Enter the no. of row: ");
n=Convert.ToInt32(Console.ReadLine());
int temp=n;
for(row=1; row<=n; row++)
{
for(col = 1; col<=temp; col++)
Console.Write("{0}", col);
for(col=1; col<row; col++)
Console.Write("__");
for(col=temp; col>=1; col--)
Console.Write("{0}",col);
temp--;
Console.WriteLine();
}
Console.ReadLine();
}
}

Fig: Screenshot of Output