Colmwise web print (all tast cases not clear)

[Ajstar]

import java.util.*;
public class Main {
public static void main(String args[]) {

Scanner s=new Scanner(System.in);

	int rows=s.nextInt();
	System.out.print(rows+" ");
	
	int cols=s.nextInt();
	System.out.print(cols);
	System.out.println();
	int arr[][]=new int[rows][cols];
	for(int i=0;i<rows;i++)
	{
		for(int j=0;j<cols;j++)
		{
			arr[i][j]=s.nextInt();
		}
	}
	for(int i=0;i<rows;i++)
	{
		for(int j=0;j<cols;j++)
		{
			System.out.print(arr[i][j]+" ");
		}
		System.out.println();
	}
	
	
	for(int j=0;j<arr.length;j++)
	{
			if(j%2==0)
				
			{
				for(int i=0;i<arr.length;i++)
				{
					System.out.print(arr[i][j]+", ");
				}
				
			}
			else
			{
				for(int i=arr.length-1;i>=0;i--)
				{
					System.out.print(arr[i][j]+", ");
				}
				
				
			}
		
	}
	System.out.print("End");

}

}

[Mihir.sood]

Hey @Ajstar,
Your logic is correct
You are printing extra lines in your code.
Remove them:

@Ajstar

System.out.print(rows+" ");

@Ajstar

System.out.print(cols); System.out.println();

@Ajstar

for(int i=0;i<rows;i++) { for(int j=0;j<cols;j++) { System.out.print(arr[i][j]+" "); } System.out.println(); }

Pay close attention to the expected output format.
Also, your indexing of for loop isn’t correct .

@Ajstar

for(int j=0;j<arr.length;j++)

@Ajstar

for(int i=0;i<arr.length;i++)

At last, it should be END not End

Here’s your updated code.

Coding Blocks IDE

[Mihir.sood]

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