奇怪的事情 怎么回事啊?

Question

代码如下  结果应该是 1吧  怎么运行后结果是12呢?   还有 把输出改成h[1]后 结果什么输出都没有 只有"按任意键退出..."using System;
using System.Collections.Generic;
using System.Text;namespace ConsoleApplication4
{
    
    class Program
    {
        static string[] h = new string[255];
        static void Main(string[] args)
        {
            try
            {
               
                string[] a ={ "1", "12", "13" };
                string[] b ={ "12", "1", "15" };
               
                Same(a, b);
                Console.WriteLine(h[0]);
               
                
            }
            catch(Exception e)
            {            }
        }
        public static void  Same(string[] ArrayA, string[] ArrayB)
        {
                     
          for (int i = 0; i < ArrayA.Length; i++)
          {
               
                for (int j = 0; j < ArrayB.Length; j++)
                {
                 
                    if (ArrayA[i] == ArrayB[j])
                    {
                        int y = 0;
                         
                       h[y]=ArrayA[i];
                        
                       
                        ++y;
                    }
                }
            }
                  }
    }
}

Answer 1

就是“12”啊，
if (ArrayA[i] == ArrayB[j])
                    {
                        int y = 0;//只给第一个元素
                         
                       h[y]=ArrayA[i];
                        
                       
                        ++y;//没用
                    }
h[0]先是“1”
后来变为"12"
故最终是“12”

Answer 2

int y = 0;           
h[y]=ArrayA[i];        
++y;你这里的 h[y] 永远都是 h[0].

Answer 3

 if (ArrayA[i] == ArrayB[j])
                    {
                        int y = 0;
                         
                       h[y]=ArrayA[i];
                        
                       
                        ++y;
                    }//第一次相等时是1,第二次是12,覆盖掉第一次

Answer 4

不好意思，看错了
lz把int y = 0;提到循环最外面就可以了