Question

How to remove all occurrences of a value in array of integers with C#

Answer 1

using System;

class Program
{
    public static int[] RemoveElements(int[] arr, int value) {
        int index = 0;
        for (int i = 0; i < arr.Length; i++) {
            if (arr[i] != value) {
                arr[index++] = arr[i];
            }
        }
        
        return arr.AsSpan(0, index).ToArray();
    }

    public static void Main(string[] args)
    {
        int[] array = { 1, 3, 8, 23, 8, 99, 8, 100, 7 };
        int value = 8;

        array = RemoveElements(array, value);

        Console.WriteLine(string.Join(", ", array));
    }
}



/*
run:
 
1, 3, 23, 99, 100, 7
 
*/

 

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