bint2bin.js

let bint2bin = (bint) => {
  let bintarr = bint.split(" "); // puts the string of numbers seperated by spaces into an array
  let togg = false; // toggles whether the number means 0 or 1 (false is 0, true is 1)
  let result = ""; // the string we will put all the binary numbers into
  for (let i = 0; i < bintarr.length; i++) {
    let str = ""; // string of 0s or 1s to add to result
    for (let n = 0; n < parseInt(bintarr[i]); n++) {
      if (togg) {
        str += "1"; // adds a 1 to str
      } else {
        str += "0"; // adds a 0 to str
      }
    }
    result += str; // adds str to the result
    togg = !togg; // toggles the togg variable
  }
  return result; // outputs the result to the console
}