Leetcode - 69. Sqrt(x)

https://leetcode.com/problems/sqrtx/

Solution 1.

/**
 * @param {number} x
 * @return {number}
 */
var mySqrt = function (x) {
  let result = 0;

  if (x === 0) {
    return 0;
  }

  if (x <= 2) {
    return 1;
  }

  for (let i = 0; i < x; i++) {
    if (i * i > x) {
      result = i - 1;
      break;
    }
  }

  return result;
};