Example: Find Transpose of a Matrix in Java language

// Find Transpose of a Matrix in Java language
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        int r, c, i, j;
        // r - this is the matrix's rows
        // c - this is the matrix's columns

        System.out.println("-----Enter the number of rows & columns of the matrix-----");
        r = in.nextInt();
        c = in.nextInt();

        int a[][], t[][];
        a = new int[r][c];
        t = new int[c][r];
        // a - this is the input matrix
        // t - this is the transpose matrix

        System.out.println("\n-----Enter the matrix's elements-----");
        for (i = 0; i < r; ++i) {
            for (j = 0; j < c; ++j) {
                System.out.print("Enter element at position[" + (i + 1) + (j + 1) + "]: ");
                a[i][j] = in.nextInt();
            }
            System.out.print("\n");
        }

        // It will display the input matrix
        System.out.println("\n-----The entered matrix-----");
        for (i = 0; i < r; ++i) {
            System.out.print("\t");
            for (j = 0; j < c; ++j) {
                System.out.print(a[i][j] + "\t");
                if (j == c - 1)
                    System.out.print("\n");
            }
            System.out.print("\n");
        }

        // It will transposes matrix
        for (i = 0; i < r; ++i) {
            for (j = 0; j < c; ++j) {
                t[j][i] = a[i][j];
            }
        }

        // It will display the transposed matrix
        System.out.println("\n-----The transpose of the matrix-----");
        for (i = 0; i < c; ++i) {
            System.out.print("\t");
            for (j = 0; j < r; ++j) {
                System.out.print(t[i][j] + "\t");
                if (j == r - 1)
                    System.out.print("\n");
            }
            System.out.print("\n");
        }
    }
}