Man this getting hard.

function testit(s){
//return s;
//return s.substr(0,1);
switch(s.length) {
case 0: return "";
break;
case 1: return s;
break;
default:
let array = [];
let charArray = [];
for (let iterator = 0; iterator < s.length; iterator ++) {
if(iterator % 2 == 0) {
charArray = [];
}
charArray.push(s[iterator]);
if(iterator % 2 == 0) {
array.push(charArray);
}
}

  return getcharacter(array);
  break;

}

function getcharacter(Strings = [[]]) {
let retorno = "";
Strings.forEach(value => retorno += value[0]);
return retorno;
}
/author: return ???;
me: Let's see how this goes/
}