Computer Science
Write a program in Java to enter natural numbers in a double dimensional array mxn (where m is the number of rows and n is the number of columns). Shift the elements of 4th column into the 1st column, the elements of 1st column into the 2nd column and so on. Display the new matrix.
11 | 16 | 7 | 4 |
8 | 10 | 9 | 18 |
9 | 8 | 12 | 15 |
14 | 15 | 13 | 6 |
Sample Input |
4 | 11 | 16 | 7 |
18 | 8 | 10 | 9 |
15 | 9 | 8 | 12 |
6 | 14 | 15 | 13 |
Sample Output |
Java
Java Arrays
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Answer
import java.util.Scanner;
public class KboatSDAColShift
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.print("Enter number of rows (m): ");
int m = in.nextInt();
System.out.print("Enter number of columns (n): ");
int n = in.nextInt();
int arr[][] = new int[m][n];
int newArr[][] = new int[m][n];
System.out.println("Enter array elements");
for (int i = 0; i < m; i++) {
System.out.println("Enter Row "+ (i+1) + " :");
for (int j = 0; j < n; j++) {
arr[i][j] = in.nextInt();
}
}
System.out.println("Input Array:");
for (int i = 0; i < m; i++) {
for (int j = 0; j < n; j++) {
System.out.print(arr[i][j] + "\t");
}
System.out.println();
}
for (int j = 0; j < n; j++) {
int col = j + 1;
if (col == n) {
col = 0;
}
for (int i = 0; i < m; i++) {
newArr[i][col] = arr[i][j];
}
}
System.out.println("New Shifted Array:");
for (int i = 0; i < m; i++) {
for (int j = 0; j < n; j++) {
System.out.print(newArr[i][j] + "\t");
}
System.out.println();
}
}
}
Output
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