1
/**
2
 * @param {number} target
3
 * @return {number}
4
 */
5
var reachNumber = function (target) {
6
  target = Math.abs(target);
7
  let steps = 0,
8
    sum = 0;
9
  while (sum < target) {
10
    steps++;
11
    sum += steps;
12
  }
13
  while ((sum - target) % 2 !== 0) {
14
    steps++;
15
    sum += steps;
16
  }
17
  return steps;
18
};