Question

How to check if an array contains a pair of numbers whose product is even in C#

Answer 1

using System;

// A product of a pair of integers will always be even if at least 1 of them is even

internal class Program
{
	public static bool arrayContainsAPairOfEvenProduct(int[] arr) {
		int oddCount = 0;

		for (int i = 0; i < arr.Length; i++) {
			if (arr[i] % 2 == 0) {
				return true;
			}
		}

		return false;
	}

	public static void Main(string[] args)
	{
		int[] arr = new int[] {1, 1, 3, 3, 5, 5, 8, 9, 9, 11}; // 8 * ? = Even

		Console.WriteLine(arrayContainsAPairOfEvenProduct(arr));
	}
}



/*
run:
  
True
  
*/

 

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