数组对比

Question

 现在有A,B两个String数组
A的值为{“a1”，“a5”}
B的值为{"a1","a2","a3","a4","a5","a6"}
   有什么方法可以去掉B数组中 与A数组中相同的元素？
  或者 合并两个数组去掉相同元素也行

Answer 1

用for循环来做，在其内写if/else来判断。

Answer 2

先用split把两个数组中的值分离出来.然后foreach循环,去掉B中等于A的值.

Answer 3

void Main()
{
 string[] a={"a1","a5"};
string[] b={"a1","a2","a3","a4","a5","a6"};
b = b.Except(a).ToArray();
foreach (string s in b)
{
Console.WriteLine(s);
}}
//结果：
a2
a3
a4
a6

Answer 4

string[] arr1= new string[3]{"a","b","c"};
string[] arr2= new string[7] { "a","b","d","e","f","g","h"};
string[] temparr1= arr1.Except(arr2).ToArray();
string[] temparr2 = arr2.Except(arr1).ToArray();

Answer 5

int[] a = { 1, 2, 3, 4, 5, 9 };
int[] b = { 1, 4, 5, 7, 8, 9 };
List<int> la = new List<int>(a);
List<int> lb = new List<int>(b);
List<int> lc = new List<int>();
foreach (int i in la)
{
  if (!lb.Contains(i))
  {
  lc.Add(i);
  }
}
foreach (int i in lb)
{
  if (!la.Contains(i))
  {
  lc.Add(i);
  }
}
LINQ Intersect(交集),Except(差集).   
int[] result= A.Except(B).ToArray();

Answer 6

試試吧，應該沒有錯！
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] A = new string[] { "a1", "a5" };
            string[] B = new string[] { "a1", "a2", "a3", "a4", "a5", "a6" };
            List<string> all = new List<string>();
            for (int i = 0; i < A.Length; i++)
            {
                if (!all.Contains(A[i]))
                    all.Add(A[i]);
            }
            for (int j = 0; j < B.Length; j++)
            {
                if (!all.Contains(B[j]))
                    all.Add(B[j]);
            }
            all.Sort();
            for (int i = 0; i < all.Count; i++)
            {
                Console.WriteLine(all[i]);
            }            Console.ReadLine();
        }
    }
}

Answer 7

int i,j,k;
for(i=0;i<6;i++) {for(j=0;j<2;j++)   if(b[i]!=a[j])
    {
      c[k]=b[i];
      k++;
    }
 }
return c[k];
看到楼主的题目，我就随手写下来了，本想用C#写写看的，可是觉得是C。呵呵，路过留下脚印。

Answer 8

最简单的方法：String[] a = {"a1","a5" };
            String[] b = {"a1","a2","a3","a4","a5","a6","a1" };            b= b.Except(a).ToArray<String>();