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March 20, 2009 at 7:36 AM

Hi Friend,

Please try the following code. We hope that this code will help you.

Here we have created a 4x4 matrix which takes the matrix values at random.

public class MNMatrix {

public static void main(String args[]) {
int[][] arr = new int[4][4];

for (int i = 0; i < arr.length; i++) {
for (int j = 0; j < arr[i].length; j++) {
arr[i][j] = new java.util.Random().nextInt(10);
}
}
MNMatrix obj = new MNMatrix();
obj.display(arr);
arr = obj.transpose(arr);
obj.maxColumn(arr, 3);
obj.average(arr, 3);
}

public void display(int[][] arr) {
System.out.println();
for (int i = 0; i < arr.length; i++) {
for (int j = 0; j < arr[i].length; j++) {
System.out.print(" " + arr[i][j]);
}
System.out.println();
}
}

public int[][] transpose(int[][] arr) {
int[][] temp = arr;
System.out.println();
for (int i = 0; i < arr.length; i++) {
for (int j = 0; j < arr[i].length; j++) {
temp[i][j] = arr[j][i];
System.out.print(" "+temp[i][j]);
}
System.out.println();
}
return temp;
}

public void maxColumn(int arr[][], int col) {
int temp = arr[col][0];
for (int i = 1; i < arr[col].length; i++) {
if (temp < arr[i][col]) {
temp = arr[i][col];
}
}
System.out.println("\nMax value of column 4 is =" + temp);
}

public void average(int arr[][], int row) {
double avg = 0.0;
for (int i = 0; i < arr[row].length; i++) {

avg += arr[row][i];
}
System.out.println("\nAverage value of row 4 is =" + avg/4);
}
}

Thanks for posting questions.

RoseIndia Team









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