Nodejs String Rot13 rot13(str)

Method Source Code

function rot13(str) { // LBH QVQ VG!
  var codeZ ='Z'.charCodeAt(0);
  var codeA ='A'.charCodeAt(0);
  var arrStr =[];
  var strarr =[];
  var codeChar;//from  w  ww  .j a va  2s  . com
  console.log(codeZ);
  console.log(codeA);
  for (var i = 0; i < str.length; i++){
    if (str[i].charCodeAt(0) >= codeA && str[i].charCodeAt(0)){
      //console.log(str[i].charCodeAt(0));
      var ucode = parseInt(str[i].charCodeAt(0));
      //codeChar = (ucode + 13)%(codeZ-codeA+1) + codeA;
      codeChar = (ucode + 13 - codeA)%(codeZ-codeA + 1) + codeA;
      console.log("codechar " + codeChar);
    } else {
      codeChar = str[i];
    }
    arrStr.push(codeChar);
  }
  console.log(arrStr);
  console.log(strarr);
  for (var i = 0; i < arrStr.length; i++){
    if (arrStr[i] >= codeA && arrStr[i] <= codeZ){
      codeChar = String.fromCharCode(arrStr[i]);
    } else {
      codeChar = arrStr[i];
    } 
    strarr.push(codeChar);   
  }

  console.log(strarr);
  str = strarr.join('');
  console.log(str);
  return str;
}

// Change the inputs below to test
rot13("SERR PBQR PNZC");

Related

1. rot13()

   String.prototype.rot13 = function(){
       return this.replace(/[a-zA-Z]/g, function(c){
           return String.fromCharCode((c <= "Z" ? 90 : 122) >= (c = c.charCodeAt(0) + 13) ? c : c - 26);
       });
   };
   

2. rot13()

   String.prototype.rot13 = function () {
     return this.replace(/[a-zA-Z]/g, function (c) {
       return String.fromCharCode(((c <= 'Z' ? 90 : 122) >= (c = c.charCodeAt(0) + 13) ? c : c - 26));
     });
   };
   var includeEmailLink = function () {
     var anchor = document.getElementById('hello');
     var href = anchor.getAttribute('href');
     return anchor.setAttribute('href', href.rot13());
   ...
   

3. rot13()

   String.prototype.rot13 = function(){
     return this.replace(/[a-zA-Z]/g, function(c){
       return String.fromCharCode((c <= "Z" ? 90 : 122) >= (c = c.charCodeAt(0) + 13) ? c : c - 26);
     });
   };
   

4. rot13(s)

   String.prototype.rot13 = function(s)
       return (s ? s : this).split('').map(function(_)
           if (!_.match(/[A-za-z]/)) return _;
           c = Math.floor(_.charCodeAt(0) / 97);
           k = (_.toLowerCase().charCodeAt(0) - 83) % 26 || 26;
           return String.fromCharCode(k + ((c == 0) ? 64 : 96));
        }).join('');
   ...
   

5. rot13(str)

   function rot13(str) { 
       var arr = [];
       for (var i = 0; i < str.length; i++) {
           if (str.charCodeAt(i) < 65 || str.charCodeAt(i) > 90) {
               arr.push(str.charAt(i));
           } else if (str.charCodeAt(i) > 77) {
               arr.push(String.fromCharCode(str.charCodeAt(i) - 13));
           } else {
               arr.push(String.fromCharCode(str.charCodeAt(i) + 13));
   ...