Method mySqrt

src/com/blankj/easy/_0069/Solution.java:12–18

(int x)

 */
public class Solution {
    public int mySqrt(int x) {
        long n = x;
        while (n * n > x) {
            n = (n + x / n) >> 1;
        }
        return (int) n;
    }

    public static void main(String[] args) {
        Solution solution = new Solution();