Question

How to find the perfect square elements in an array with C#

Answer 1

using System;
 
class Program
{
    static bool is_perfect_square(double n) {   
       double sq = Math.Sqrt(n); 
        
       return ((sq - Math.Floor(sq)) == 0); 
    } 
     
    static void Main()
    {
        int[] arr = { 7, 8, 9, 0, 36 };
        
        int size = arr.Length; 
           
        for (int i = 0 ; i < size; i++) {
            if (is_perfect_square(arr[i])) 
                Console.WriteLine(arr[i] + " : Yes"); 
            else
               Console.WriteLine(arr[i] + " : No"); 
        }
    }
}
 
 
 
 
/*
run:
 
7 : No
8 : No
9 : Yes
0 : Yes
36 : Yes
 
*/

 

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