# Valid Perfect Square using Python

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 (4Ã—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.

##### Aman Kharwal

I'm a writer and data scientist on a mission to educate others about the incredible power of dataðŸ“ˆ.

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