using System;
using System.Collections.Generic;
//移除陣列裡指定元素並回傳陣列新長度,不能創新陣列
public class Program
{
public static void Main()
int[] nums = {3,2,2,3};
int val =3;
int len=nums.Length;
int index=0;
foreach(var i in nums)
if(i!=val)
nums[index++] = i;
}
Console.WriteLine(index);