sqrt.js

// Given a non-negative integer x, compute and return the square root of x.

// Since the return type is an integer, the decimal digits are truncated, and only the integer part of the result is returned.

// Note: You are not allowed to use any built-in exponent function or operator, such as pow(x, 0.5) or x ** 0.5.

// Example 1:
// Input: x = 4
// Output: 2

// Example 2:
// Input: x = 8
// Output: 2
// Explanation: The square root of 8 is 2.82842..., and since the decimal part is truncated, 2 is returned.


/**
 * @param {number} x
 * @return {number}
*/
var mySqrt = function (x) {
    let res = Math.sqrt(x).toFixed(10).split(".");
    return Number(res[0]);
};