9. C # Basic finishing (Multidimensional arrays)

Multidimensional Array 1, two-dimensional array:

Representation method:

Int[y,x],x, Y is the index, Y represents the row, and X represents the column.

Cases:

int New int [23]{{3,2,5},{6,7, 8 }}; // {} can not write

Modification Method:

second[013;   indicates that the number in column 1th of row No. 0 is changed to 3

Exercise: bubble sort with a two-dimensional array:

Enter the number of people, enter each person's age, height, name, average age, by height from high to low sort

Console.WriteLine ("Please enter the number of people:"); intn =int.            Parse (Console.ReadLine ()); string[,] ren =New stringN3]; //Enter information for each student separately             for(inti =0; I < n; i++) {Console.WriteLine ("Please enter your name, age, and height, separated by the ENTER key:");  for(intj =0;j<3; j + +) {ren[i, j]=Console.ReadLine (); }            }            Doublesum =0; //Calculate total age, print average age             for(inti =0; i<n;i++) {sum= Sum +int. Parse (Ren[i,1]); } Console.WriteLine ("The average age is: {0}", Math.floor (sum/N)); Console.WriteLine ("Name Age Height"); //Sort by Height             for(inti =0; I < n; i++)            {                 for(intj = i; J < N; J + +)                {                    if(int. Parse (Ren[j,2]) >int. Parse (Ren[i,2]))                    {                        string[] Zhong = {ren[j,0],ren[j,1],ren[j,2]}; //Exchange all information to keep your height in alignment with your name and ageRen[j,0] = Ren[i,0]; Ren[j,1] = Ren[i,1]; Ren[j,2] = Ren[i,2]; Ren[i,0] = zhong[0]; Ren[i,1] = zhong[1]; Ren[i,2] = zhong[2]; }                }            }            int[,] ab =New int[0,0];  for(inti =0; I < n; i++)            {                 for(intj =0; J <3; J + +) {Console.Write (Ren[i, J]+"      "); } console.write ("\ n"); }

* 2, multidimensional array

Notation: Int[z,y,x]:z indicates that there are several two-dimensional arrays, using the same method as the two-dimensional array

9. C # Basic finishing (Multidimensional arrays)