My implementation of the "Caesars Cipher" algorithm is marked down as wrong even though it produces the desired output

JavaScript
1

I’m trying to submit my solution to the problem but it keeps getting marked as wrong. Frustrated by this, I tried using the basic solution available in the ‘Get a Hint!’ section, which produced the same output as mine but got marked as right, for some reason. My code is the following:

function rot13(str) { // LBH QVQ VG!
  var arr = str.split('');
  console.log("\n" + str + ": ");
  arr = arr.map.call(str, function(x) {
    var code = x.charCodeAt(0); 

      if (code >= 65 && code <= 77) { // 77 = 90 - 13
        console.log(x + " = " + String.fromCharCode(code + 13));
        return String.fromCharCode(code + 13);
      }
      else if (code >= 65 && code <= 90) {
        console.log(x + " = " + String.fromCharCode(code -13));
        return String.fromCharCode(code - 13);
      }
      else {
        console.log(String.fromCharCode(code) + " = " + String.fromCharCode(code));
        return String.fromCharCode(code);
      }
    }).join('');
  }


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

I’m using Firefox and checking my solution using the Javascript console, if that’s any help.

2

I’ve edited your post for readability. When you enter a code block into the forum, remember to precede it with a line of three backticks and follow it with a line of three backticks to make easier to read. See this post to find the backtick on your keyboard. The “preformatted text” tool in the editor (</>) will also add backticks around text.

markdown_Forums

1 Like
3

Your function does not return anything.

4

Oh my, I forgot the ‘return’ statement. I feel so stupid now. Thanks for your help :slight_smile: