Validating **perfect squares** is a popular coding interview question. Here you will be given an integer, and you have to check if the integer is a perfect square. So, if you want to learn how to validate perfect squares, this article is for you. In this article, I will take you through how to solve the problem of Valid Perfect Square using Python.

## Valid Perfect Square using Python

When we square an integer, the output is a perfect square. In the problem of validating a perfect square, you will be given an integer n. To solve this problem, you need to check whether the given integer n is a square of an integer.

For example, look at the input and output of this problem shown below:

- Input: 16 | Output: True (4×4 = 16)
- Input: 14 | Output: False

If the input integer is the square of a number, your output will be True. Otherwise, False.

## Valid Perfect Square using Python

I hope you have understood what the problem of validating the perfect square means. Now, below is how to solve this problem using the Python programming language:

def isPerfectSquare(num): left = 1 right = num while left < right: mid = (left + right) // 2 if mid * mid == num: return True elif mid * mid < num: left = mid + 1 elif mid * mid > num: right = mid return False print(isPerfectSquare(49))

Output: True

So this is how to validate perfect squares using Python. You can find many more practice questions for coding interviews solved and explained using Python **here**.

### Summary

When we square an integer, the output is a perfect square. In the problem of validating a perfect square, you will be given an integer n. To solve this problem, you need to check whether the given integer n is a square of an integer. I hope you liked this article on validating perfect squares using Python. Feel free to ask valuable questions in the comments section below.