283. Move Zeroes

Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.

For example, given nums = [0, 1, 0, 3, 12], after calling your function, nums should be [1, 3, 12, 0, 0].

Note:

1. You must do this in-place without making a copy of the array.
2. Minimize the total number of operations.

public void MoveZeroes(int[] nums) {
         int zeroCount =0;
         foreach(var num in nums)
         {
             if(num == 0) zeroCount++;
         }
         int index=0;
         for(int i =0;i< nums.Count();i++)
         {
             if(nums[i] !=0)  nums[index++] = nums[i];
         }
         for(int i = index;i< nums.Count();i++)
         {
             nums[i] = 0;
         }
        
    }

 public void MoveZeroes(int[] nums) {
         for (int i = 0, j = 0; i < nums.Count(); i++) {
            if (nums[i] !=0 ) {
                if(i!=j) Swap(nums, i,j++);
                else j++;
            }
        }
    }
    private void Swap(int[] nums, int i, int j)
    {
        int temp = nums[i];
        nums[i] = nums[j];
        nums[j] = temp;
    }