Square root of a number
Medium Accuracy: 52.21% Submissions: 82439 Points: 4

Given an integer x, find the square root of x. If x is not a perfect square, then return floor(√x).

 

Example 1:

Input:
x = 5
Output: 2
Explanation: Since, 5 is not a perfect 
square, floor of square_root of 5 is 2.

Example 2:

Input:
x = 4
Output: 2
Explanation: Since, 4 is a perfect 
square, so its square root is 2.

 

Your Task:
You don't need to read input or print anything. The task is to complete the function floorSqrt() which takes x as the input parameter and return its square root.
Note: Try Solving the question without using sqrt Function.

 

Expected Time Complexity: O(log N)
Expected Auxiliary Space: O(1)

 

Constraints:
1 ≤ x ≤ 107

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Square root of a number

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