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  1. Caesar Cipher
  2. Discussions

Caesar Cipher

  • terrymayone
     + 0 comments

    Here is a Javascript solution

    function caesarCipher(s, k) {
    // Write your code here
    k = k % 26
    let encrypted =""
    
    for(let i =0; i < s.length; i++){
        let char  = s[i]
        
        // Check if the character is a letter
        if(char >= 'a' && char <= 'z'){
            // Shift lowercase letters
            let newChar = String.fromCharCode( ( (char.charCodeAt(0) - 97 + k) % 26) + 97)
            
            encrypted += newChar
        } else if(char >= 'A' && char <= 'Z'){
            let newChar = String.fromCharCode( ( (char.charCodeAt(0) - 65 + k) % 26) + 65)
            
            encrypted += newChar
        } else {
            encrypted += char
        }
    }
    return encrypted
}