Coderbyte
Letter Changes
Have the function LetterChanges(str) take the str parameter being passed and modify it using the following algorithm. Replace every letter in the string with the letter following it in the alphabet (ie. c becomes d, z becomes a). Then capitalize every vowel in this new string (a, e, i, o, u) and finally return this modified string.
function LetterChanges(str) {
let charArr = str.split('');
for (let i = 0; i < str.length; i++){
if (charArr[i].match(/[a-z]/)){ ///[a-zA-Z]/ if uppercase in string to handle
//hadle z to a case
if (charArr[i] === 'z' ){
charArr[i] = 'A'; // A is vowel - uppercase right away or let followw logic to upper - remove cont.
continue;
}
//change letter to next in alphabet
charArr[i] = String.fromCharCode(charArr[i].charCodeAt(0) + 1 );
//uppercase vowels
if (charArr[i].match(/[aeiou]/gi)){
charArr[i] = charArr[i].toUpperCase();
}
}
}
return charArr.join('');
}
// keep this function call here
console.log(LetterChanges(readline()));
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