Code not accepted

#1

import java.util.*;
public class Main {
static Scanner sc = new Scanner(System.in);
public static void main(String[] args) {
int[][] arr = inputarray();
rowprint(arr);
}
public static int[][] inputarray(){
int M = sc.nextInt();
int N = sc.nextInt();
int[][] arr = new int[M][N];
for(int i = 0;i<M;i++) {
for(int j = 0;j<N;j++) {
arr[i][j] = sc.nextInt();
}
}
return arr;
}
public static void rowprint(int[][] arr) {
for(int i = 0;i<arr.length;i++) {
if(i%2==0) {
for(int j = 0;j<arr.length;j++) {
System.out.print(arr[i][j]+", “);
}
}
else {
for(int j = arr.length-1;j>=0;j–) {
System.out.print(arr[i][j]+”, ");
}
}
}
System.out.print(“END”);
}
}
Whats wrong in this code??

#2

Hi @prateekad99,
It will give wrong answer for the input:
2 3
1 2 3
4 5 6

You need to add more conditions to your code. Right now you are only printing for n x n matrices.

It will give error ( Index out of bounds) for the input:
3 2
1 2
3 4
5 6

#3

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