Class 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 Detail

      • Solution

        public Solution()
    • Method Detail

      • isPerfectSquare

        public boolean isPerfectSquare​(int num)