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Caesar Cipher: Encryption

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53 Discussions

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  • Atharsh
     + 0 comments

    //Answer in java import java.io.; import java.math.; import java.security.; import java.text.; import java.util.; import java.util.concurrent.; import java.util.regex.*;

    public class cipher {

    private static final Scanner scanner = new Scanner(System.in);

public static void main(String[] args) {
    int n = scanner.nextInt();
    scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

    String s = scanner.nextLine();

    int k = scanner.nextInt();
    scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

    scanner.close();
    for(int i=0;i<s.length();i++)
    {
        int ch=s.charAt(i);
        if(ch>=97&&ch<=122)
        {
            ch+=k;
            if(ch<=122)
            {
                System.out.print((char)ch);
            }
            else{
                while(ch>122)
                {
                ch=ch-122;
                ch=96+ch;
                }
                System.out.print((char)ch);
            }
        }
        else if(ch>=65&&ch<=90)
        {
            ch+=k;
            if(ch<=90)
            {
                System.out.print((char)ch);
            }
            else{
                while(ch>90)
                {
                ch=ch-90;
                ch=64+ch;
                }
                System.out.print((char)ch);
            }
        }
        else{
            System.out.print((char)ch);
        }
    }
}

    }

  • lohith170031609
     + 0 comments
    #include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    int n;
    cin >> n;
    string s;
    cin >> s;
    int k;
    cin >> k;
        for(int i=0;i<n;i++)
     {   
           if(s[i]>='A' && s[i]<='Z'){ 
               s[i] = ((s[i] - 65 + k) % 26) + 65;
               cout<<char(s[i]);
           }
            else if (s[i]>='a' && s[i]<='z'){
            s[i] = ((s[i] - 97 + k) % 26) + 97;
            cout<<char(s[i]);
             }
            else
                cout<<char(s[i]);
        }
    return 0;
}

  • chaithanyachowd1
     + 0 comments

    include

    include

    include

    include

    int main() { int n,i,k; char a[101]; scanf("%d %s %d",&n,a,&k); k%=26; for(i=0;i='a'){ if(a[i]+k>'z') a[i]-=26; a[i]+=k; } else if(a[i]<='Z'&&a[i]>='A'){ a[i]+=k; if(a[i]>'Z') a[i]-=26; } } printf("%s",a);
    return 0; }

  • ronalses
     + 0 comments
    var n = parseInt(readLine());
    var s = readLine();
    var k = parseInt(readLine());
    let finalString = ''
    for (let letter of s) {
      let letra = ''
      if (letter.match(/[a-z]/i)) {
        let asciiL = letter.charCodeAt(0)
        if (asciiL >= 65 && asciiL <= 90) {
          letra = String.fromCharCode(65 + (asciiL - 65 + k) % 26)

        }
        if (asciiL >= 97 && asciiL <= 122) {
          letra = String.fromCharCode(97 + (asciiL - 97 + k) % 26)
        }
      } else {
        letra = letter
      }
      finalString += letra
    }
    console.log(finalString)

  • swastik101
     + 0 comments

    the code i wrote is :-

    include

    include

    include

    include

    include

    include

    include

    int main(){ int n; scanf("%d",&n); char s[100]; int a[100]; int i; for(i=0;i=65)&&(a[i]<=90)) {s[i]=((s[i]-64+k)%26)+64; printf("%c",s[i]); } else if((a[i]>=97)&&(a[i]<=122)) { s[i]=((s[i]-97+k)%26)+97; printf("%c",s[i]); } else printf("%c",s[i]);

    }
return 0;

    }

    {BUT WHY IS THIS CODE NOT WORKING IF I ENTER A SPECIAL CHARACTER IN BETWEEN?}