Logicalprog

C program of Cyclic Redundancy Check

2022-04-30T17:57:00.001+05:30

C program of Cyclic Redundancy Check

Program

#include<stdio.h>

// shorthand for loops
#define forn(i,e) for(int i = 0; i < e; i++)
#define forsn(i,s,e) for(int i = s; i < e; i++)

int validate_data(int len_data, int data[], int len_divisor, int divisor[]){

    // Returns 1, if the data is correct
    // Returns 0, if the data is incorrect/corrupted.

    int current_bits[len_divisor];

    forn(i, len_divisor) { current_bits[i] = data[i]; }
    
    // the logic is same as generating the crc.
    forn(i, len_data) {

        if (!current_bits[0]) {

            forn(j, len_divisor-1) { current_bits[j] = current_bits[j+1]; }
            current_bits[len_divisor-1] = data[i+len_divisor];

        } else {

            forn(j, len_divisor) { current_bits[j] = current_bits[j]^divisor[j]; }
            forn(j, len_divisor-1) { current_bits[j] = current_bits[j+1]; }
            current_bits[len_divisor-1] = data[i+len_divisor];
        }
    }

    // if all the bits upto length len_divisor-1 is 0, return 1, else return 0;
    forn(i, len_divisor-1) { if(current_bits[i]) return 0; }
    return 1;
}

int main(){

    int len_divisor=0, len_data=0, len_data_and_pad=0;

    printf("Enter the length of divisor > ");
    scanf("%d",&len_divisor);

    printf("Enter the length of data > ");
    scanf("%d",&len_data);

    // total length of data with padded CRC bits
    len_data_and_pad = len_data+len_divisor-1;

    int divisor[len_divisor], data[len_data_and_pad];

    printf("\nEnter the divisor :- \n");
    forn(i,len_divisor) { printf("> "); scanf("%d",&divisor[i]); }

    printf("\nEnter the data :- \n");
    forn(i,len_data) { printf("> "); scanf("%d",&data[i]); }

    // initialize paddings with zero
    forsn(i, len_data,len_data+len_divisor) { data[i] = 0; }

    int current_bits[len_divisor];

    forn(i, len_divisor) { current_bits[i] = data[i]; }

    forn(i, len_data) {

        // if first bit is zero, bits shift left by one place
        // new bit is added at the end from the data bits.

        if (!current_bits[0]) {
            
            forn(j, len_divisor-1) { current_bits[j] = current_bits[j+1]; }
            current_bits[len_divisor-1] = data[i+len_divisor];

        } else {

            // XOR current bits with divisor.
            forn(j, len_divisor) { current_bits[j] = current_bits[j]^divisor[j]; }
            forn(j, len_divisor-1) { current_bits[j] = current_bits[j+1]; }
            current_bits[len_divisor-1] = data[i+len_divisor];
        }
    }

    // replace padded data bits with the CRC available in current_bits[0:-2]
    forsn(i, len_data, len_data_and_pad) { data[i] = current_bits[i-len_data]; }

    printf("DATA > ");
    forn(i, len_data_and_pad) { printf("%d ", data[i]); }

    printf("\nCRC > ");
    forn(i, len_divisor-1) { printf("%d ", current_bits[i]); }

    // Receiver side...
    int check = validate_data(len_data, data, len_divisor, divisor);

    if (check){
        printf("\n\nThe data is correct.\n");
    } else {
        printf("\n\nThe data is corrupted !!\n");
    }

    return 0;
}

Java program to play Rock, Paper and Scissors with computer.

2021-11-01T09:40:00.002+05:30

import java.lang.*;
import java.util.Scanner;
import java.util.Random;

public class RPS{

    public int user_score =0 , comp_score = 0;
    public String user_choice, comp_choice;
    Random ran;
    Scanner scan;

    public RPS(){
        ran = new Random();
        scan = new Scanner(System.in);
    }

    public void userTurn(){
        System.out.println("\n[1] Rock , [2] Paper , [3] Scissors");
        System.out.print("Choice > ");
        user_choice = whatIsIt(scan.nextInt() - 1);
    }

    public void machineTurn(){
        comp_choice = whatIsIt(ran.nextInt(3) + 1);
    }

    public String whatIsIt(int a){
        if(a==0){
            return "Rock";
        }
        if(a==1){
            return "Paper";
        }
        return "Scissors";
    }

    public String whoKilled(){
        if(user_choice!= comp_choice){
            if(user_choice== "Rock"){
                if(comp_choice == "Paper"){
                    comp_score++;
                    return "comp";
                }
                else{
                    user_score++;
                    return "user";
                }
            }
            if(user_choice== "Paper"){
                if(comp_choice == "Rock"){
                    user_score++;
                    return "user";
                }
                else{
                    comp_score++;
                    return "comp";
                }
            }
            if(user_choice== "Scissors"){
                if(comp_choice == "Rock"){
                    comp_score++;
                    return "comp";
                }
                else{
                    user_score++;
                    return "user";
                }
            }
        }
        return "Draw";
    }

    public String whoWon(){
        scan.close();
        if(user_score>comp_score){
            return "user";
        }
        else{
            return "comp";
        }
    }
}

class Controller{
    public static void main(String[] args) {
        RPS rpc = new RPS();
        int times=5;
        String who;

        System.out.println("##### Rock Paper Scissors #####");

        while(times>0){
            rpc.userTurn();
            rpc.machineTurn();
            who = rpc.whoKilled();
            System.out.println("\nMachine Choose : "+rpc.comp_choice);
            switch(who){
                case "user" -> {
                    times--;
                    System.out.println("You killed Computer !!");
                }
                case "comp" -> {
                    times--;
                    // System.out.println("Machine Choose : "+rpc.comp_choice);
                    System.out.println("computer killed you !!");
                }
                default -> System.out.println("\nIts a Draw.");
            }
        }
        System.out.println("\nScore: [ You -> "+rpc.user_score+" ] [ Computer -> "+rpc.comp_score+" ]");
        if(rpc.whoWon() == "user"){
            System.out.println("\nCongratulation!! You have won!!\n");
        }
        else{
            System.out.println("\nComputer defeated you!!\n");
        }
    }
}

How to convert char to int number in C language ?

2020-12-21T13:29:00.000+05:30

To Convert char(Character) Number to int (Integer) in C Language

Char - > Int

Introduction :

// Credit to logical.blogspot.com 
// Originally created

The conversion can by done by simple programming in c language. It's an easy trick prepared by logical.blogspot.com . Before proceeding to conversion of char to int of character number. we must have knowledge about ASCII numbers , basic c language and c programming , functions , loops and data types as well as exponent of any numbers . Among them most essential thing is ASCII numbers.

If you have good knowledge about ASCII numbers , you will able to solve the conversion very quickly. ASCII numbers of 0 to 9 are : 48 to 57 respectively.

If you have good knowledge about the numbers you can solve easily , for example : 123 = 1 X (10)^2 + 2 X (10)^1 + 3 X (10) ^0

Basics in c language : array , data types, for and while loops , increments.

You need knowledge about stack. Push , pop , show operation.

C language code :

 

// Credit to logical.blogspot.com 
// Originally created

#include <stdio.h>
int sq(int,int);

char stack[10];

int main() {
	
	int i=0,x;

	int CharToNum, AddNumNum=0 , exponent=-1; 

	int NumChar=0;
	
	printf("Enter any char interger :\n");
	
	gets(stack);
	
	printf(" Your expression is : %s\n ",stack);
	
	
	
	while(stack[i] != '\0')
	{
		if ( stack[i] >=48 &&  stack[i] <= 57)
			exponent++;
		i++;
	}
	


	i=0;

	while(stack[i] != '\0')
	{

		if ( stack[i] >=48 &&  stack[i] <= 57)
		{

			CharToNum = stack[i] - '0';

			NumChar = NumChar+(CharToNum*sq(10,exponent));

			exponent--;
		}

		i++;
	}
	
	printf("Your integer : %d",NumChar);
}

int sq(int num , int power)
{
	int i , sqn = 1;

	if (power == 1)
		return num;

	for (i=0;i<power;i++)
		sqn = sqn*num;

	return sqn;
		
}

Output :

--------------------------------------------------------

Build Your Algo | Practice Coding | Programming Language |

2020-11-06T10:23:00.009+05:30

BUILD YOUR ALGORITHM

CODE !

( Any programming language , Build in any logic , Practice Coding)

Q. Take a list of items, arrange them all odd first and then even, last sort them in acceding order the odd and then even.

Time : 30 mins

Sample input :

[1,2,3,4,5,6,7,8,9,10]

Sample output :

[1,3,5,7,9,2,4,6,8,10]

Tips:

** Build your algorithm**

HINTS :

1. Check list is empty

2. Arrange in odd then even

3. Find the mid value

4. Sort and merge the items

6. And return list.

PYTHON CODE :

 

mylist = [1,2,3,4,5,6,7,8,9,10]

def mylist(alist):
    
    # check list is empty
    if len(alist) == 0:
        return 0  
    
    # arrange in odd then even
    for i in range(0,len(alist)):
        if alist[i]%2 == 0:
            for j in range(i,len(alist)):
                if alist[j]%2 == 1:
                    X = alist[i]
                    alist[i] = alist[j]
                    alist[j] = X
    
    # find the mid value 
    mid =0
    for idx in range(0,len(alist)):
        if alist[idx]%2 == 0:
            mid = idx
            break

    if mid == 0:
        alist.sort()
        return alist
    # sort and merge the items
    return(sorted(alist[0:mid]) + sorted(alist[mid:len(alist)])) 


print(mylist(mylist))

OUTPUT :

---------------------------------------------------

JAVA | Check by ASCII weather a single input character is vowel or consonant?

2020-10-21T10:24:00.002+05:30

PRACTICE AND LEARN

JAVA

(ASCII, Input a character)

Q. Check an alphabet, Weather it is vowel or consonant? (Using ASCII number, taking an input character)

Tips:

** Build your algorithm**

Hints for building:

1) Take input character from user.

2) Convert into ASCII number.

3) Check vowel or consonant ASCII number.

4) Use if and else.

5) print the character from user.

Packages Required:

The package required is java.util. we have to import it by snippet code. Scanner class is used from java.util package to get user input.

import java.util.Scanner;

How to take input a character ? :

We have used the next().charAt(); method, for read a character.

Scanner read = new Scanner(System.in);
char a = read.next().charAt(0);

Try once before seeing the code

JAVA Code :

import java.util.Scanner;
public class ASCII_Alphabet{
        public static void main(String[] args){
                Scanner read = new Scanner(System.in);
                char a = read.next().charAt(0); 
                int b = a;
                if(b == 97 || b == 101 || b == 105 || b == 111 || b == 117){ 
                        System.out.println( a + " is Vowel");
}
                else{
                        System.out.println(a + " is consonant");
} 
}
}

Output :

-------------------------------**-------------------

Prime Number | Check | Intervals | Python Language

2020-10-08T13:37:00.003+05:30

Print the prime numbers in given two intervals :

(coded in Python Language)

Introduction:

Prime numbers are numbers that have only 2 factors: 1 and themselves. For example, the first 10 prime numbers are 2, 3, 5, and 7, if we look at 11 it has two factors 1 and 11 that makes number 11 remainder zero(0).

Coding in Python (.py) :

""" THIS IS THE ALGORITHM FOR PRINTING RANGE OF PRIME NUMBERS"""

def range_prime(a,b):
    
    """ Defining a function name range_prime that will print 
            the range between """
            
    # checking a valid input 
    
    if (a < 0 or b < 0): 
        print('Enter greater than zero as input!!')
    elif a == b :
        print("Give a range between ",a,b)
    elif (a > b ):
        print( a," must be smaller than ",b)
    
        
    else:
        
        # algorithm of prime numbers
       
        for i in range(a,b+1):
            for j in range(2,i+1):
                if i%j==0:
                    break
            if i == j:
                print(i)
                
#call the function by passing value 
               
range_prime(4,20)

Output :

---------------------------------------------------

Counter() | Collection library | Python Langauage

2020-10-01T07:40:00.001+05:30

Learn and Practice :

Counter() | Collection library :

collections.Counter() // python.org

A counter is a container that stores elements as dictionary keys, and their counts are stored as dictionary values.

Sample Code

>>> from collections import Counter
>>> 
>>> myList = [1,1,2,3,4,5,3,2,3,4,2,1,2,3]
>>> print Counter(myList)
Counter({2: 4, 3: 4, 1: 3, 4: 2, 5: 1})
>>>
>>> print Counter(myList).items()
[(1, 3), (2, 4), (3, 4), (4, 2), (5, 1)]
>>> 
>>> print Counter(myList).keys()
[1, 2, 3, 4, 5]
>>> 
>>> print Counter(myList).values()
[3, 4, 4, 2, 1]


 
Task
 is a shoe shop owner. His shop has  number of shoes.
He has a list containing the size of each shoe he has in his shop.
There are  number of customers who are willing to pay  amount of money only if they get the shoe of their desired size.
Your task is to compute how much money  earned.
 
Input Format
The first line contains , the number of shoes.
The second line contains the space separated list of all the shoe sizes in the shop.
The third line contains , the number of customers.
The next  lines contain the space separated values of the  desired by the customer and , the price of the shoe.
Constraints



 
Output Format
Print the amount of money earned by .
 
Sample Input
10
2 3 4 5 6 8 7 6 5 18
6
6 55
6 45
6 55
4 40
18 60
10 50
Sample Output
200
 
Explanation
Customer 1: Purchased size 6 shoe for $55.
Customer 2: Purchased size 6 shoe for $45.
Customer 3: Size 6 no longer available, so no purchase.
Customer 4: Purchased size 4 shoe for $40.
Customer 5: Purchased size 18 shoe for $60.
Customer 6: Size 10 not available, so no purchase.
Total money earned =  $200



 
Actual code for the above problem



# Enter your code here. Read input from STDIN. Print output to STDOUT

from collections import Counter as cnt

input()

lst = dict(cnt([int(i) for i in input().split()]))

earned = 0

for i in range(int(input())):
    size,price = map(int, input().split())
    if size in lst.keys():
        if lst[size]!=0:
            earned=earned+price
            lst[size] = lst[size] - 1
print(earned)



---------------------------------------------------
Related Links :
Download: Python
Install : python
---------------------------------------------------

Comments | DocString | Python Language | Tutorial

2020-09-27T13:28:00.003+05:30

Learn | Practice|

Python Language

( Comment , Docstring )

Comment :

Comment is basically for user, not a part of program. It is mainly use for elaborating codes for other person who are reading.
Python ignores it during execution.

' # ' Comment :

Hash ( ' # ' ) symbol is use to comment.

# This is example of a comment

' ctrl + / ':

It is short-cut to implement the comment.

This is example of a comment

Ctrl + /

# This is example of a comment

Doc-string (""" ........ """):

It is done when any documentations of a code. It is done with three double quotes at start and end of a document. Python ignores it during execution.

For Example:

"""Paragraphs are the building blocks of papers. Many students define paragraphs in terms of length: a paragraph is a group of at least five sentences """

Try:

Convert into comment :

This is a Tree

print(" What is your name")

Convert into Doc-string :


A document is a written, drawn
, presented, or memorialized 
representation of thought

---------------------------------------------------

Escape sequence | Python Language | Tutorial

2020-09-25T14:30:00.001+05:30

Learn | Practice|

Python Language

Escape sequence :

An escape sequence is a sequence for the characters.

The properties are that they represent itself when used inside a character or string literal,instead they convert into another character or a sequence of characters. It is very hard or unable to represent directly.

Some examples :

Escape Sequences	\| Meaning
\'	- single quote
\"	- double quote
\\	- backslash
\n	- new line
\t	- tab
\b	- backspace

Single Quote :

print('Hello \'Happy\' World')

>> Hello 'Happy' World

Double Quote :

print("Hello \"Happy\" World")

>> Hello "Happy" World

Backslash :

print("Hello World\\")

>> Hello World\

New Line :

print("Hello\nWorld")

>> Hello
   World

Tab :

Create a space

print("Hello\tWorld")

>> Hello 'Happy' World

Backspace :

print("Helloo\b World")

>> Hello World

---------------------------------------------------

Print() Function | Python Language | Tutorial

2020-09-25T10:04:00.100+05:30

Learn | Practice|

Python Language

print() Function :

Print Function is use to print on the screen. It can be integer, string, Float, character etc

Using quotes :

To print characters we use quotes.

 # double quotes
print("Hello World ")

 # single quotes
print('Hello world')

We can use single quotes in double quotes or double quotes on single quotes but we cannot use single quotes in single quotes or double quotes in double quotes.

print("Hello 'Happy' World")

>> Hello 'Happy' World

 print('Hello "Happy" World')

>> Hello "Happy" World

 # syntax error 
 print("I am "coming" soon")

>> syntax error

# syntax error 
 print(' I'm Logicalprog')  

>> syntax error

Using variable :

First we have to declare variable and assign the value then print the value.

a=10
print(a)

>>a=10

Using User Input :

Taking input from the user , storing it into a variable and then printing it.

# as a string
a=input()
print(a)

>>logicalprog
a=logicalprog

# as a integer
a=int(input())
print(a)

>>123
a=123

---------------------------------------------------

Relate Links :

Download: Python

Install : python

---------------------------------------------------

What is structured Programming ? | FORUM

2020-09-11T12:06:00.002+05:30

Structure Programming : FORUM

--------------------------------------------------

What is interface? | FORUM

2020-09-10T16:32:00.001+05:30

Interface : Forum

Comment Below:

---------------------------------------------------

What is Data Science? | FORUM

2020-09-09T21:10:00.003+05:30

Data Science:

Comment below :

---------------------------------------------------

What makes JAVA Platform Independent ? | FORUM

2020-09-08T17:44:00.043+05:30

Comment below :

---------------------------------------------------

What is hacking ? | FORUM

2020-09-08T15:06:00.003+05:30

What is Hacking? Types of hacking? Is hacking good or bad?

-------------------------------------------------------------

COMPUTER VIRUS : ARTICLE

TOP 10 PROGRAMMING LANGUAGES IN 2021 : ARTICLE

-------------------------------------------------------------

Give your suggestion below :

Most Popular and Demanding Programming Language Python | FORUM

2020-09-07T19:38:00.004+05:30

Why Python is the Most Popular And Demanding Language in Programming Market?

--------------------------------------------------

R LANGUAGE BECOMING POPULAR | NEWS

2020-09-05T20:12:00.004+05:30

Why R Language becoming popular?

R is a Programming language it's environment for statistical computing and graphics.The environment was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues.R was created by Ross Ihaka and Robert Gentlemanat the University of Auckland, New Zealand, and is developed by the R Development Core Team . R is named partly after the first names of the first two R authors and partly as a play on the name of S. The project was conceived in 1992, with an initial version released in 1995 and a stable beta version (v1.0) on 29 February 2000.

R language is called integrated suite.The software facilities for data manipulation, calculation and graphical display. It mainly consists of :

An effective data handling and storage facility,
a suite of operators for calculations on arrays, in particular matrices,
a large, coherent, integrated collection of intermediate tools for data analysis,
graphical facilities for data analysis and display either on-screen or on hard-copy, and
a well-developed, simple and effective programming language which includes conditionals, loops, user-defined recursive functions and input and output facilities.

- R Language.

R is free under the GNU General Public License, with a per-compiled binary version that provide for various operating systems like Linux, Windows and Mac.

R is a GNU-style and an official part of the GNU project called GNU S.

R Language is a widely use in statistical programming language in collage and IT industry. R Language can perform well with data science, that makes a great language for everyone with interest in data analysis, data visualization, and data science.

----------------------------------------

TOP 10 PROGRAMMING LANGUAGES IN 2021 | ARTICLE

What is Abstract Data ? | Forum

2020-09-03T22:07:00.001+05:30

ABSTRACT DATA :

Put your comments below:

NEED OF DATA STRUCTURE | FORUM

2020-09-01T15:53:00.001+05:30

Why we require Data Structure?

TOP 10 PROGRAMMING LANGAUAGES COMMING 2021 | ARTICLE

2020-08-31T07:06:00.001+05:30

2021 PROGRAMMING LANGUAGES :

You should learn this languages that will help to sustain and compatible in the year 2021. It help to boost your programming skills and fight with current technology. You will be able to think critically and with advance knowledge you can crack any coding interviews.

Top 10:

10.KOTLIN

Kotlin can be used for any kind of development, be it server-side, client-side web and Android. With Kotlin/Native currently in the works, support for other platforms such as embedded systems, mac-OS and iOS.

9. SWIFT

Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns. The goal of the Swift project is to create the best available language for uses ranging from systems programming, to mobile and desktop apps, scaling up to cloud services.

8. SCALA :

Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtime let you build high-performance systems with easy access to huge ecosystems of libraries.

7. C++

C++ was developed by Bjarne Stroustrup, as an extension to the C language. C++ gives programmers a high level of control over system resources and memory. You can implement OOPs.

6. C#

C# is widely used for developing desktop applications, web applications and web services. It is used in creating applications of Microsoft at a large scale. C# is also used in game development in Unity.

5.PHP

PHP is a popular general-purpose scripting language that is especially suited to web development.

Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.

4. Java

'Java can be used to create complete applications that may run on a single computer or be distributed among servers and clients in a network. It can also be used to build a small application module or applet (a simply designed, small application) for use as part of a Web page.

3.JavaScript

JavaScript is a client scripting language which is used for creating web pages. It is a standalone language developed in Netscape. It is used when a webpage is to be made dynamic and add special effects on pages like rollover, roll out and many types of graphics.

2. R

The R programming language is an important tool for development in the numeric analysis and machine learning spaces. With machines becoming more important as data generators, the popularity of the language can only be expected to grow.

1. Python

Python is a general-purpose coding language. It can be used for other types of programming and software development besides web development. That includes back end development, software development, data science and writing system scripts among other things.

------------------------**************-------------------

ABOUT : VIRUS ARTICLE

When to use | not to use | Recursion in Programming | Forum

2020-08-30T09:56:00.000+05:30

When we should use recursion in our code and when we should not. It can be for any programming language.

Practice | Designer Door Mat | Python Program | BUILD YOUR LOGIC AND ALGORITHM

2020-08-30T09:42:00.000+05:30

Mr. Vincent works in a door mat manufacturing company. One day, he designed a new door mat with the following specifications:

Mat size must be X. ( is an odd natural number, and is times .)
The design should have 'WELCOME' written in the center.
The design pattern should only use |, . and - characters.

Sample Designs

    Size: 7 x 21 
    ---------.|.---------
    ------.|..|..|.------
    ---.|..|..|..|..|.---
    -------WELCOME-------
    ---.|..|..|..|..|.---
    ------.|..|..|.------
    ---------.|.---------
    
    Size: 11 x 33
    ---------------.|.---------------
    ------------.|..|..|.------------
    ---------.|..|..|..|..|.---------
    ------.|..|..|..|..|..|..|.------
    ---.|..|..|..|..|..|..|..|..|.---
    -------------WELCOME-------------
    ---.|..|..|..|..|..|..|..|..|.---
    ------.|..|..|..|..|..|..|.------
    ---------.|..|..|..|..|.---------
    ------------.|..|..|.------------
    ---------------.|.---------------

Input Format

A single line containing the space separated values of

and

Constraints

Output Format

Output the design pattern.

Sample Input

9 27

Sample Output

------------.|.------------
---------.|..|..|.---------
------.|..|..|..|..|.------
---.|..|..|..|..|..|..|.---
----------WELCOME----------
---.|..|..|..|..|..|..|.---
------.|..|..|..|..|.------
---------.|..|..|.---------
------------.|.------------

PLEASE TRY YOURSELF FIRST BEFORE SCROLLING DOWN. You might come up with a better program than the program given below.

<---------------------    A L E R T ---------------------->


THE ACTUAL PROGRAM :



txt = ".|."

n,m = list(map(int, input().split()))

for i in range(1,n,2):

    print((txt*i).center(m, "-"))

print("WELCOME".center(m,"-"))

for i in range(n-2,0,-2):

    print((txt*i).center(m, "-"))

Also check out the Word Order python program.

Difference between C and C++ | Forum

2020-08-28T09:17:00.004+05:30

C VS C++ :

ALL ABOUT COMPUTER VIRUS

2020-08-27T18:00:00.010+05:30

VIRUS

How virus comes?

Firstly virus do not appear by themselves - they are being created by very evil and bad hackers, programmers who then send them to information exchange networks or toss them to the computers of their acquaintances. Virus cannot sneak to your computer by itself - either it was hiding on diskettes or even on a CD, or you have accidentally downloaded it from a computer informational networks , or may be you had virus in your computer from the very beginning or worst of all some hacker lives in your home.
Secondly, computer virus infect only a computer and nothing else, so don't be afraid - they are not being passed through keyboard or mouse.

Who create Viruses and Why?

Simply we can say programmers create viruses. The only reason moving such people to create viruses is their inferiority complex. They utilize stealth technology and are polymorphic. They infect not only files but also boot sectors of drivers and sometimes Windows OS/2 executable. Programmers principles of infecting, hiding, counter attacking anti-virus and so on. They also invent new methods of incorporating into new operating system, creates new virus construction sets, and polymorphic generators.

How do I know I have Computer Virus?

1) Programs take longer to load than normal.

2) Computer's hard drive constantly runs out of free space.

3) The floppy disk drive or hard drive runs out of free space.

4) New files keep appearing on the system and you don't know where they came from.

5) Strange sounds or beeping noises come from the computer.

6) Strange graphics are displayed on your computer monitor.

7) Files have strange names you don't recognize.

8) Unable to access the hard drive when booting from the floppy dive.

9) Program sizes keep changing.

10) Sometimes it refuses disk access.

11) Conventional memory is less than it used to be.

Types of malware:

Virus:

A malicious Program that piggybacks on normal existing software to carry out harmful activity. A virus replicates itself.

Worm:

A worm is a variation of a virus that requires no additional software and it also replicates itself.

Trojan horse:

It is also a kind of virus. A Trojan horse masquerades as something else. A related variation is spyware. A Trojan horse usually does not replicates.

E-Mail attachment to avoid:

.exe .scr .vs .wsf .bat .vbs .reg .pif .vbe .wsh .shs

Some safe attachments:

.jpg .avi .htm .rtf .xls .gif .mpg .txt .ppt .rm .wav .wpb .doc

-------------------------------*************-----------------

Join the forum : HACKING

------------------------------------------------------------------

PRACTICE | Word Order | Python program | BUILD YOUR LOGIC AND ALGORITHUM

2020-08-24T19:54:00.003+05:30

"Word Order"

You are given words. Some words may repeat. For each word, output its number of occurrences. The output order should correspond with the input order of appearance of the word. See the sample input/output for clarification.

Note: Each input line ends with a "\n" character.

Constraints:

The sum of the lengths of all the words do not exceed
All the words are composed of lowercase English letters only.

Input Format :

The first line contains the integer, .
The next lines each contain a word.

Output Format :

Output lines.
On the first line, output the number of distinct words from the input.
On the second line, output the number of occurrences for each distinct word according to their appearance in the input.

Sample Input :

4
bcdef
abcdefg
bcde
bcdef
Sample Output

Sample Output:

3
2 1 1

Explanation:

There are distinct words. Here, "bcdef" appears twice in the input at the first and last positions. The other words appear once each.
The order of the first appearances are "bcdef", "abcdefg" and "bcde" which corresponds to the output.

PLEASE TRY YOURSELF FIRST BEFORE SCROLLING DOWN. You might come up with a better program than the program given below.

<--------------------- A L E R T ---------------------->

THE ACTUAL PROGRAM :

db = {}

for i in range(int(input())):

    name = input()

    if name not in db.keys():

        db[name] = 1

    elif name in db.keys():

        db[name] = db[name] + 1

print(len(db))

for i in db.values():

    print(i, end=" ")

If you come up with a better code, feel free to post down in the comment sections below.

---------------------------------------------------------------------

How to Install and Run Python 3.7 Compiler?

Logicalprog

C program of Cyclic Redundancy Check

C program of Cyclic Redundancy Check

Program

Java program to play Rock, Paper and Scissors with computer.

How to convert char to int number in C language ?

To Convert char(Character) Number to int (Integer) in C Language

Char - > Int

Introduction :

C language code :

Output :

Build Your Algo | Practice Coding | Programming Language |

BUILD YOUR ALGORITHM

CODE !

Q. Take a list of items, arrange them all odd first and then even, last sort them in acceding order the odd and then even.

** Time : 30 mins **

Sample input :

Sample output :

Tips:

HINTS :

PYTHON CODE :

OUTPUT :

Related Links :

Comment below for any help !!

-----------------------********--------------------

JAVA | Check by ASCII weather a single input character is vowel or consonant?

PRACTICE AND LEARN

JAVA

Q. Check an alphabet, Weather it is vowel or consonant? (Using ASCII number, taking an input character)

Tips:

Hints for building:

Packages Required:

How to take input a character ? :

**Try once before seeing the code**

JAVA Code :

Output :

Prime Number | Check | Intervals | Python Language

Print the prime numbers in given two intervals :

Introduction:

Coding in Python (.py) :

Output :

Related Links :

Counter() | Collection library | Python Langauage

Learn and Practice :

Counter() | Collection library :

Actual code for the above problem

Related Links :

Comments | DocString | Python Language | Tutorial

Learn | Practice|

Python Language

Comment :

' # ' Comment :

' ctrl + / ':

Doc-string (""" ........ """):

Try:

Convert into comment :

Convert into Doc-string :

Related Links :

Escape sequence | Python Language | Tutorial

Learn | Practice|

Python Language

Escape sequence :

Related Links :

Print() Function | Python Language | Tutorial

Learn | Practice|

Python Language

print() Function :

Using quotes :

Using variable :

Using User Input :

Relate Links :

What is structured Programming ? | FORUM

Structure Programming : FORUM

Related Links :

What is interface? | FORUM

Interface : Forum

Related Links :

What is Data Science? | FORUM

Data Science:

Related Links :

Time : 30 mins

Try once before seeing the code