simple java(九)---array(二)

Declaring double-subscripted array

intb[][] = { { 1, 2}, { 3, 4} };

例一.

public class ShowArray {

public static void main(String[] args) {

int array[][] = { { 1, 2, 3 }, { 4, 5, 6 } };

System.out.println("Values in array by row are");

for (int row = 0; row <.array.length;row++){

for (int col = 0; col <. array[row].length; col++) {

System.out.print(array

[row][col] + " ");}

System.out.println();}}}

執行結果:

Values in array by row are

1 2 3

4 5 6

例二.

public class ArrayCal {

public static void main(String[] args) {

int grades[][] = { { 77, 68, 86, 73 },

{ 96, 87, 89, 81 },

{ 70, 90, 86, 81 } };

int students, exams;

String output = "";

students = grades.length;

exams = grades[0].length;

output += " ";

for (int counter = 0; counter <. exams; counter++)

output += "[" + counter + "] ";

for (int row = 0; row <. students; row++) {

output += "\nStudent " + row + ": ";

for (int column = 0; column <. exams; column++)

output += grades[row][column] + " ";}

int highGrade;

for (int row = 0; row <. students; row++)

highGrade = grades[row][0];

for (int column = 0; column <. exams; column++)

if (grades[row][column] > highGrade)

highGrade = grades[row][column];

}

output += "\nThe highest Grade of Student " +row + " is: "

+ highGrade;}

System.out.println(output);

執行結果:

[0] [1] [2] [3]

student0:77 68 86 73

student1:96 87 89 81

student2:70 90 86 81

The highest Grade of Student 0 is:86

The highest Grade of Student 1 is: 96

The highest Grade of Student 2 is: 90