Package g0301_0400.s0367_valid_perfect_square

Class Solution

java.lang.Object
g0301_0400.s0367_valid_perfect_square.Solution
public class Solution extends java.lang.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
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isPerfectSquare(int num)
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • isPerfectSquare

      public boolean isPerfectSquare(int num)