function equalizeArray(arr) {
  const len = arr.length;
  const stack = {};
  let ret = len;
  ƒ;

  for (let i = 0; i < len; i++) {
    const num = arr[i];
    if (!stack[num]) stack[num] = 1;
    else stack[num] += 1;
  }

  for (let [key, value] of Object.entries(stack)) {
    if (len - value < ret) ret = len - value;
  }

  return ret;
}