g0301_0400.s0367_valid_perfect_square

Class Solution

java.lang.Object

g0301_0400.s0367_valid_perfect_square.Solution

public class Solution
extends Object

367 - Valid Perfect Square.

Easy

Given a positive integer num, write a function which returns True if num is a perfect square else False.

Follow up: Do not use any built-in library function such as sqrt.

Example 1:

Input: num = 16

Output: true

Example 2:

Input: num = 14

Output: false

Constraints:

• 1 <= num <= 2^31 - 1

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
boolean	isPerfectSquare(int num)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

isPerfectSquare

public boolean isPerfectSquare(int num)