CodeGolf

bitSmearing.js

// https://codegolf.stackexchange.com/questions/151537/alternating-bit-smearing
// CodeGolf - alternating bit smearing over trailing 00 for numbers in base 2

smear = function (num) {
const old = num;
let replaces = 0, remind = num%4===0, supl = 0;

while (remind) {
  console.log(remind);
  remind?replaces++:0;
  num = num/4;
  remind = num%4===0;
  supl += Math.pow(4, replaces);
}
return old + supl;
}

smear(4);