Code work prefect but error in submission time

#1

check the code please

#2
#3

@deepgarg46 There a small mistake here in the for loop of line no. 18 it should be arr[0].length not arrr.length bcoz arr.length will give no. of rows but here you want no. of columns.
Corrected code :

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n=sc.nextInt();
		int m =sc.nextInt();
		int[][] arr = new int[n][m];
		for(int i = 0;i<n;i++) {
			for(int j=0;j<arr[i].length;j++) {
				arr[i][j]=sc.nextInt();
			}
		}
		WavePrint(arr);
	}

	public static void WavePrint(int[][] arr) {
		for (int i = 0; i < arr[0].length; i++) {
			if (i % 2 == 0) {
				for (int j = 0; j < arr.length; j++) {
					System.out.print(arr[j][i]+ ", ");
				}

			} else {
				for (int j = arr.length - 1; j >= 0; j--) {
					System.out.print(arr[j][i]+", ");
				}
			}
		}System.out.print("END");
	}

}
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#4

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