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caesar cipher

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akileus answered on January 11, 2022 Popularity 9/10 Helpfulness 1/10

answer caesar cipher

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The Caesar Cipher technique is one of the earliest and simplest methods of encryption technique. It's simply a type of substitution cipher, i.e., each letter of a given text is replaced by a letter with a fixed number of positions down the alphabet.

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Contributed on Sep 17 2023

akileus

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def encrypt(string, shift):
 
  cipher = ''
  for char in string:
    if char == ' ':
      cipher = cipher + char
    elif  char.isupper():
      cipher = cipher + chr((ord(char) + shift - 65) % 26 + 65)
    else:
      cipher = cipher + chr((ord(char) + shift - 97) % 26 + 97)
  
  return cipher
 
text = input("enter string: ")
s = int(input("enter shift number: "))
print("original string: ", text)
print("after encryption: ", encrypt(text, s))

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Contributed on Jan 11 2022

Vast Vendace

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Caesars Cipher

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function encryption(input, key) {
  let encrypted = input;
  const alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
  const alphabet2 = alphabet.toLowerCase();
  const keyedalphabet = alphabet.slice(key) + alphabet.slice(0, key);

  for (let q = 0; q < encrypted.length; q++) {
    let currChar = encrypted.charAt(q);
    let index = alphabet.indexOf(currChar);

    if (index !== -1) {
      let newChar = keyedalphabet.charAt(index);
      encrypted = encrypted.slice(0, q) + newChar + encrypted.slice(q + 1);
    }

    index = alphabet2.indexOf(currChar);
    if (index !== -1) {
      const keyedalphabet2 = keyedalphabet.toLowerCase();
      let newChar = keyedalphabet2.charAt(index);
      encrypted = encrypted.slice(0, q) + newChar + encrypted.slice(q + 1);
    }
  }

  return encrypted;
}

// Test the function
const input = "Hello World";
const key = 3;
const encrypted = encryption(input, key);
console.log(encrypted); // Output: "Khoor Zruog"

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Contributed on Aug 13 2023

Better Buffalo

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ceasers cipher

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-1

function convertToRoman(num) {
  var ref = [['M', 1000], ['CM', 900], ['D', 500], ['CD', 400], ['C', 100], ['XC', 90], ['L', 50], ['XL', 40], ['X', 10], ['IX', 9], ['V', 5], ['IV', 4], ['I', 1]];
  var res = [];
  ref.forEach(function(p) {
    while (num >= p[1]) {
      res.push(p[0]);
      num -= p[1];
    }
  });
  return res.join('');
}

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Contributed on Nov 04 2022

Upset Unicorn

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