w3resource

C#: Find the product of two integers in an array

C# Sharp Array: Exercise-41 with Solution

Write a C# Sharp program to find two numbers in an array of integers whose product is equal to a given number.

Sample Data:
({10, 18, 39, 75, 100}, 180) -> {10, 18}
({10, 18, 39, 75, 100}, 200) -> {}
({10, 18, 39, 75, 100}, 702) -> {18, 39}

Sample Solution:

C# Sharp Code:

using System;
using System.Linq;
using System.Collections.Generic;namespace exercises
{
   class Program
   {
       static void Main(string[] args)
       {
           int[] nums1 = { 10, 18, 39, 75, 100};
           Console.WriteLine("Original array elements:");
           int n = 180;
           Console.WriteLine($"{string.Join(", ", nums1)}");
           Console.WriteLine("The given number (n): " + n);
           Console.WriteLine("Product of two integers in the said array equal to n:");
           int[] result = test(nums1, n);
           Console.WriteLine($"{string.Join(", ", result)}");
           n = 200;
           Console.WriteLine("\nOriginal array elements:");
           Console.WriteLine($"{string.Join(", ", nums1)}");
           Console.WriteLine("The given number (n): " + n);
           Console.WriteLine("Product of two integers in the said array equal to n:");
           int[] result1 = test(nums1, n);
           Console.WriteLine($"{string.Join(", ", result1)}");
           n = 702;
           Console.WriteLine("\nOriginal array elements:");
           Console.WriteLine($"{string.Join(", ", nums1)}");
           Console.WriteLine("The given number (n): " + n);
           Console.WriteLine("Product of two integers in the said array equal to n:");
           int[] result2 = test(nums1, n);
           Console.WriteLine($"{string.Join(", ", result2)}");       }
       public static int[] test(int[] nums, int n)
       {
           List<int> result = new List<int>();
           foreach (int x in nums)
           {
               foreach (int y in nums)
               {
                   if (x * y == n)
                   {
                       result.Add(y);
                   }
               }
           }
           return result.OrderBy(el => el).ToArray();
       }
   }
}

Sample Output:

Original array elements:
10, 18, 39, 75, 100
The given number (n): 180
Product of two integers in the said array equal to n:
10, 18

Original array elements:
10, 18, 39, 75, 100
The given number (n): 200
Product of two integers in the said array equal to n:


Original array elements:
10, 18, 39, 75, 100
The given number (n): 702
Product of two integers in the said array equal to n:
18, 39
 

Flowchart:

Flowchart: Find the product of two integers in an array.

C# Sharp Code Editor:

Contribute your code and comments through Disqus.

Previous C# Sharp Exercise: Smallest positive which is not present in an array.
Next C# Sharp Exercise: C# Sharp Searching and Sorting Algorithm Exercises

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.




We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook