unity游戏开发-C#语言基础篇(二维数组)

 class Program
    {
        static void Main(string[] args)
        {
                //第一种声明方式;
            int[,] arr = new int[2, 3];//初始化声明2行3列二位数组的长度;

            //第二种声明方式;
            int[,] arr2 = new int[2, 3] { { 1, 2, 3 }, { 4, 5, 6 } };//声明数组长度并初始化它具体的值;

            //第三种声明方式;
            int[,] arr3 = { 
                          { 1, 2, 3 }, 
                          { 4, 5, 6 },
                          { 7, 8, 9 }
        }; 
        //声明二位数组并初始化直接赋值;不用声明具体长度以及实例化,行数可以变;列数不变;列数变,每列都要变;
            Console.WriteLine(arr3.Length);//长度是值数组的每一个元素之和=行*列;
            Console.WriteLine(arr3[2, 1]);//二位数相应下标从0号位开始;相关取法和一维数组一样;注意写法arr[0,2];
            arr3[0, 2] = 888;//可以重新赋值; 
            Console.WriteLine(arr3[0, 2]);

            for (int i = 0; i < 3; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    Console.Write(arr3[i, j] + " ");
                }
                Console.Write("\n");
            }


            //练
            const int Line = 4;//行数
            const int List = 5;//列数
            int[,] arr = new int[Line, List] { { 1, 2, 3, 0, 8 }, { 4, 5, 6, 0, 8 }, { 7, 8, 9, 0, 8 }, { 1, 2, 3, 0, 8 }, };
            for (int i = 0; i < Line; i++)
            {
                for (int j = 0; j < List; j++)
                {
                    Console.Write(arr[i, j] + " ");
                }
                Console.WriteLine();
            }


            //练
            int[,] arr1 = new int[2, 3] { { 1, 2, 3 }, { 4, 5, 6 } };
            for (int i = 0; i < 2; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    Console.Write(arr1[i, j] + " ");
                }
                Console.WriteLine();
            }



            //练 遍历数组 简易方法//arr.getlength();
            int[,] arr = new int[2, 3] { { 1, 2, 3 }, { 4, 5, 6 } };

            for(int i=0;i Arr[i,j])//判断最小值
                    {
                        arrMin = Arr[i,j];
                    }
                }
               
            }
            Console.WriteLine("最大值为{0}\n最小值为{1}\n", arrMax, arrMin);

            //2.2:对这个二维数组进行从小到到的排序显示,如这样{{1,2,3},{4,5,6},{7,8,9}};
                 //------------二维数组直接排序------------------
            for (int i = 0; i < Arr.GetLength(0); i++)
            {
                for (int j = 0; j < Arr.GetLength(1); j++)
                {
                    for (int k = 0; k < Arr.GetLength(0); k++)
                    {
                        for (int q = 0; q < Arr.GetLength(1); q++)
                        {
                            if (Arr[i, j] < Arr[k, q])
                            {
                                int temp = Arr[i, j];
                                Arr[i, j] = Arr[k, q];
                                Arr[k, q] = temp;
                            }
                        }
                    }

                }
            }

            //------------二维数组变成一维数组;再排序转换成二维数组------------------
            int[] arrPaixu=new int[Arr.Length];
            int js_1 = 0;
            for (int i = 0; i < Arr.GetLength(0); i++)
            {
                for (int j = 0; j < Arr.GetLength(1); j++)
                {
                    arrPaixu[js_1] = Arr[i, j];
                    js_1++;
                }
            }

            for (int i = 0; i < arrPaixu.Length; i++)
            {
                for (int j = 0; j < arrPaixu.Length; j++)
                {
                    if (arrPaixu[i] < arrPaixu[j])
                    {
                        int temp = arrPaixu[i];
                        arrPaixu[i] = arrPaixu[j];
                        arrPaixu[j] = temp;
                    }
                }

            }
            js_1 = 0;
            for (int i = 0; i < Arr.GetLength(0); i++)
            {
                for (int j = 0; j < Arr.GetLength(1); j++)
                {
                    Arr[i, j]=arrPaixu[js_1];
                    js_1++;
                }
            }

            int js1 = 0;
            foreach (int arr22 in Arr)
            {
                Console.Write(arr22 + "     ");
                js1++;
                if (js1 % 4 == 0)
                {
                    Console.WriteLine();
                }
            }



            Console.ReadKey();
        
        }
    }

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