Move All Zeros to the End of an Array in C#

Create a method MoveZeros, traverse through the array and count the number of Zeros in the array. Based on the count size make all the final cells to zero. Return without processing if the array length is null or empty. The final result will be in nums Array. Time complexity is O(N) because we are traversing through the array once.

Time complexity − O(N)

Space complexity − O(1)

Example

public class Arrays{
   public void MoveZeros(int[] nums){
      if (nums == null || nums.Length == 0){
         return;
      }
      int count = 0;
      for (int i = 0; i < nums.Count(); i++){
         if (nums[i] != 0){
            nums[count] = nums[i];
            count++;
         }
      }
      for (int i = count; i < nums.Length; i++){
         nums[i] = 0;
      }
   }
}

static void Main(string[] args){
   int[] nums = { 0, 1, 0, 3, 12 };
   s.MoveZeros(nums);
   foreach (var item in nums){
      Console.WriteLine(item);
   }
}

Output

[1,3,12,0,0]