NoRepeatsPlease Inclusion_Exclusiond

factorial.js

//factorial
function f(number){
  let $ = 1 , _ = 1;
  while($<=number){
    _*=$;
    $++;
  }
  return _;
}

stringInfo.js

function getRepeatedLetters(str){

  let reg = /([a-zA-Z]).*(\1)/gm;
  let repeats = {};

  for(let x =0 ; x<str.length;x++){
    var l = str.charAt(x);
    repeats[l] = (isNaN(repeats[l]) ? 1 : repeats[l] + 1);
  }

  let reTotal = 0;

  for(let k in repeats){
    if(repeats[k]<=1)
      delete repeats[k];
    else reTotal+=repeats[k];
  }

return {
        repeats,
        length:Object.keys(repeats).length,
        totalRepeated:reTotal
        };

}