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C# | Find Total Occurrence of a number in an Array

Learn, how to find total number of occurrence of a given number?
[Last updated : March 19, 2023]

Total occurrences of a number in an array

Given array of integers and we have to find occurrence of a give number.

For example we have list of integers: 10 23 10 24 10

Here we will take a counter initialized with 0. Then take input from console. And check given number to each number of list if item matched. Then we will increase the counter.

C# program to find total occurrence of a given number in an array

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1 {
  class Program {
    static void Main() {
      int i = 0;
      int count = 0;
      int item = 0;

      int[] arr1 = new int[5];

      //Read numbers into array
      Console.WriteLine("Enter numbers : ");
      for (i = 0; i < 5; i++) {
        Console.Write("Element[" + (i + 1) + "]: ");
        arr1[i] = int.Parse(Console.ReadLine());
      }

      Console.Write("Enter item : ");
      item = int.Parse(Console.ReadLine());

      for (i = 0; i < 5; i++) {
        if (item == arr1[i]) {
          count++;
        }
      }

      Console.WriteLine("Total occurrence of item " + item + " is : " + count);

      Console.WriteLine();
    }
  }
}

Output

Enter numbers :
Element[1]: 10
Element[2]: 20
Element[3]: 30
Element[4]: 10
Element[5]: 50
Enter item : 10
Total occurrence of item 10 is : 2

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