← 返回 uber 的题目列表Sqrt(x)
类型：qbank
Given a non-negative integer x, return the square root of x rounded down to the nearest integer, without using any built-in exponent function or operator. The result must be non-negative.
Examples
Example 1:
Input: x = 4
Output: 2
Explanation:
The square root of 4 is 2, so we return 2.
Example 2:
Input: x = 8
Output: 2
Explanation:
The square root of 8 is 2.82842..., and since we round it down to the nearest integer, 2 is returned.
Constraints
0 <= x <= 2^31 - 1