Perfect Square Logic in Python | Dataford Interview Questions

How would you write Python code to check whether a number is a perfect square?

Implement is_perfect_square(num) and return True if there is an integer k such that k * k == num; otherwise return False. Avoid floating-point square-root comparisons so the method remains correct for large integers. The input is a nonnegative Python integer, and the output is a Boolean.

Constraints

0 <= num
num is a Python integer and may exceed fixed-width integer ranges
Do not rely on floating-point arithmetic for correctness

Function Signature

def is_perfect_square(num):

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Problem

How would you write Python code to check whether a number is a perfect square?

Constraints

0 <= num
num is a Python integer and may exceed fixed-width integer ranges
Do not rely on floating-point arithmetic for correctness

Function Signature

def is_perfect_square(num):

Your question is Perfect Square Logic in Python. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.