【Notes】foreach遍历变长数组

对变长数组使用foreach循环时，通常都要嵌套循环，才能得到该数据。

Example:

 static void Main(string[] args)
 {
    int[][] newArarry={new int[] {1},
                       new int[] {1,2},
                       new int[] {1,2,3},
                       new int[] {1,2,3,4},
                       new int[] {1,3},
                       new int[] {1,2,3,4,5},
                       new int[] {2,3,4},
                       new int[] {3,5}};

    foreach(int[] newArarry1 in newArarry)
    {
       foreach(int newArarry2 in newArarry1)
       {
          Console.Write(newArarry2);
       }          
    }

   Console.ReadKey();