C#各种数组的用法 C#各种数组的用法实例演示

using System;
class ArrayApp
{
  public static void Main ( )
  {
    //一维数组用法：计算数组中奇偶数的个数
    Console.WriteLine("一维数组演示：一维数组中的奇偶数个数");
    int[ ] arr1 = new int[ ] {8, 13, 36, 30, 9, 23, 47, 81 };
    int odd = 0;
    int even = 0;
    foreach ( int i in arr1 )   
    {
      if ( i % 2 == 0 )
        even ++;
      else
        odd ++;
    }
    Console.WriteLine("共有 {0} 个偶数， {1} 个奇数。", even, odd);
    //二维数组用法：m行n列的矩阵
    Console.WriteLine("二维数组演示：3行4列的矩阵");
    int[,] arr2 = new int[3,4] { {4,2,1,7}, {1,5,4,9}, {1,3,1,4} };
    for ( int i = 0; i < 3; i++ )
    {
      for ( int j = 0; j < 4; j++ )
      {
        Console.Write(arr2[i,j] + "\t");
      }
      Console.WriteLine( );
    }
    //锯齿型数组用法：元素个数不同的两个数组
    Console.WriteLine("锯齿型数组演示：长度不同的两个数组");
    int[][] arr3 = new int[2][];
    arr3[0] = new int[5] {1,3,5,7,9};
    arr3[1] = new int[4] {2,4,6,8};
    //   char[][] arr3 = new char[][] { {H,e,l,l,o}, {C,s,h,a,r,p} };
    for ( int i = 0; i < arr3.Length; i++)
    {
      Console.Write("第{0}个数组是：\t",i+1);
      for ( int j = 0; j < arr3[i].Length; j++ )
      {
        Console.Write(arr3[i][j]+ "\t");
      }
      Console.WriteLine();
    }
  }
}