public class PrintMatrixRowsAndColumns_Java {
public static void printMatrixRows(int[][] matrix) {
for (int i = 0; i < matrix.length; i++) {
System.out.printf("row: %d: ", i);
for (int j = 0; j < matrix[0].length; j++) {
System.out.printf("%4d ", matrix[i][j]);
}
System.out.println();
}
}
public static void printMatrixColumns(int[][] matrix) {
for (int j = 0; j < matrix[0].length; j++) {
System.out.printf("column %d: ", j);
for (int i = 0; i < matrix.length; i++) {
System.out.printf("%4d ", matrix[i][j]);
}
System.out.println();
}
}
public static void main(String[] args) {
int[][] matrix = {
{ 4, 7, 9, 18, 0 },
{ 1, 9, 18, 99, 3 },
{ 9, 17, 89, 2, 5 },
{ 19, 49, 6, 1, 8 }};
printMatrixRows(matrix);
System.out.println();
printMatrixColumns(matrix);
}
}
/*
run:
row: 0: 4 7 9 18 0
row: 1: 1 9 18 99 3
row: 2: 9 17 89 2 5
row: 3: 19 49 6 1 8
column 0: 4 1 9 19
column 1: 7 9 17 49
column 2: 9 18 89 6
column 3: 18 99 2 1
column 4: 0 3 5 8
*/
