행렬의 행과 열을 바꾸는 메소드 transpose

public class ExerciseCh2_7 {
	public static void transpose(int arr1[][],int arr2[][]) {
		for(int i=0; i<arr1.length; i++) {
			for(int j=0; j<arr1[0].length; j++) {
				arr2[j][i] = arr1[i][j];
			}
		}
	}
	public static void main(String[] args) {
		
		int [][] arr1 = {{1, 2, 3}, {4, 5, 6}};
		
		for (int i=0; i<arr1.length; i++){
			for (int j=0; j<arr1[0].length; j++)
				System.out.print(arr1[i][j]);
			System.out.println();
		}System.out.println();
		
		
		int [][] arr2 = new int[arr1[0].length][arr1.length];
		
		transpose(arr1, arr2);
		
		for (int i=0; i<arr2.length; i++){
			for (int j=0; j<arr2[0].length; j++)
				System.out.print(arr2[i][j]);
			System.out.println();
		}		
	}

}