C#: Check specific digit in an array of numbers

Last update on December 20 2024 12:45:53 (UTC/GMT +8 hours)

Write a C# Sharp program that takes an array of numbers and a digit. Check whether the digit is present in this array of numbers.

Sample Data:
({7, 5, 85, 9, 11, 23, 18}, "1") - > "Present"
({7, 5, 85, 9, 11, 23, 18}, "1") - > "Present"
({7, 5, 85, 9, 11, 23, 18}, "1") - > "Not present..!"

Sample Solution:

C# Sharp Code:

using System;
using System.Linq;

namespace exercises
{
    class Program
    {
        static void Main(string[] args)
        {
            // Initializing an array of integers
            int[] nums = { 7, 5, 85, 9, 11, 23, 18 };

            // Initializing a string representing a digit to search for
            string n = "1";

            // Displaying original array elements using string.Join method
            Console.WriteLine("Original array elements:");
            Console.WriteLine($"{string.Join(", ", nums)}");

            // Displaying the digit to search for
            Console.WriteLine("\nDigit to search: " + n);

            // Checking if the specified digit is present in the array and displaying the result
            Console.WriteLine("Check if the said digit is present in the array: " + test(nums, n));

            // Changing the digit to search for and repeating the process
            n = "9";
            Console.WriteLine("\nDigit to search: " + n);
            Console.WriteLine("Check if the said digit is present in the array: " + test(nums, n));

            n = "4";
            Console.WriteLine("\nDigit to search: " + n);
            Console.WriteLine("Check if the said digit is present in the array: " + test(nums, n));
        }

        // Method to check if a specified digit is present in the array
        public static string test(int[] nums, string n)
        {
            // Using LINQ to convert each integer in the array to a string and checking if it contains the specified digit
            return nums.Select(s => $"{s}").Any(a => a.Contains(n)) ? "Present" : "Not present..!";
        }
    }
}

Sample Output:

Original array elements:
7, 5, 85, 9, 11, 23, 18

Digit to search: 1
Check the said digit present in the array!: Present

Digit to search: 9
Check the said digit present in the array!: Present

Digit to search: 4
Check the said digit present in the array!: Not present..!

Flowchart:

C# Sharp Code Editor:

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