1611-minimum-one-bit-operations-to-make-integers-zero.js

/**
 * @param {number} n
 * @return {number}
 */
const minimumOneBitOperations = function (n) {
  let sign = 1,
    res = 0;
  while (n) {
    res += n ^ ((n - 1) * sign);
    n &= n - 1;
    sign = -sign;
  }
  return Math.abs(res);
};

// another

/**
 * @param {number} n
 * @return {number}
 */
const minimumOneBitOperations = function(n) {
  let mask = n;
  while (mask) {
    mask >>= 1;
    n   ^= mask;
  }
  return n;
};

// another

/**
 * @param {number} n
 * @return {number}
 */
const minimumOneBitOperations = function(n) {
  n ^= n >> 16
  n ^= n >>  8
  n ^= n >>  4
  n ^= n >>  2
  n ^= n >>  1
  return n
};