Waveprint rowwise challenge

#1

import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
int M = sc.nextInt();
int N = sc.nextInt();
//array declaration
int [][] arr = new int[M][N];
for(int i=0; i<=arr.length-1; i++)
{
for(int j=0;j<=arr[i].length-1;j++)
{
arr[i][j] = sc.nextInt();
}
System.out.println();
}

}
public static void Waveprint(int [][] arr)
{
	for(int i=0;i<=arr.length-1;i++)
	{
		if(i%2==0)
		{
			for(int j=0;j<=arr[i].length-1;j++)
			{
				System.out.print(arr[i][j]+ ", ");
			}
		}
		else
		{
			for(int j=arr[i].length-1; j>=0; j--)
			{
				System.out.print(arr[i][j]+ ", ");
			}
		}
	}
	System.out.print("END");
}

}