一维数组的插入：

实现效果：在1 2 3 后面插入4

using System;using System.Collections;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace Array{ class Program { static void Main(string[] args) { int[] array = new int[] { 1, 2, 3 }; int[] des = addArray(array, 4, 4); foreach (int item in des) { Console.WriteLine(item ); } Console.ReadLine(); } static int[] addArray(int[] bornArray, int index, int value) { ArrayList list = new ArrayList(bornArray ); if (index <0) { index =0 ; } if (index >bornArray .Length -1) { index = bornArray.Length; } list.Insert(index ,value ); int[] des = new int[list.Count ]; for (int i=0;i<list.Count;i++) { des[i] = (int)list[i]; } return des; } }}