Drive add-on to return array of values from second array where array ones corresponding index contained the specified char

SelectRangeByCorrespondingChar.js

function selectRangeByCorrespondingChar(c1,c2,char) {
  var n=[], c=0;
  for(var i in c1){
    if(i===char){
      n.push(c2[c]);
    } c++;
  }
  return n;
}

function sumRangeResult(c1) {
  var t=0;
  for(var n in c1){
    t+=n;
  } return t;
}

function processRange(a,b,c) {
  return sumRangeResult(selectRangeByCorrespondingChar(a,b,c));
}