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39 lines (31 loc) · 1005 Bytes
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//2081/11/26
// lab 2.1 change the main diagonal elements of a matix by user given number
package lab2java;
import java.util.Scanner;
public class DiagonalMain {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int[][] a = {{1, 2, 3},
{4, 5, 6},
{7, 8, 9}};
System.out.println("Original matrix");
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
System.out.print(a[i][j] + " ");
}
System.out.println("");
}
System.out.println("Enter 3 values to change :");
for (int i = 0; i < 3; i++) {
int temp = sc.nextInt();
a[i][i] = temp;
}
System.out.println("changed matrix");
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
System.out.print(a[i][j] + " ");
}
System.out.println("");
}
}
}