CODEWITHSUNDEEP
javaarraysmultidimensional-array
demeter_aurion
demeter_aurion

Reputation: 35

Display Array ColumnWise

I need to display an array of numbers. The output needs to be this:

10 25 29 13 46 30 26 57 41 34 88 52 60 77 82

I currently have it working but its not displaying column-wise, here is my output: 

10 13 26 34 60 25 46 57 88 77 29 30 41 52 82

I found a similar question with answer on here but it was for rows that aren't all the same length, so I don't think it will be helpful to use it.

Here is my code (also I'm new to java):

public class test
{
public static void main(String[] args)
{

int rows = 3;
int cols = 5;


int intar [][] = {  {10, 13, 26, 34, 60} ,
                {25, 46, 57, 88, 77},
                {29, 30, 41, 52, 82} };



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


}
}

Upvotes: 1

Views: 3844

Answers (5)

shikjohari
shikjohari

Reputation: 2288

Just replace your for loop with this

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

Upvotes: 0

Elliott Frisch
Elliott Frisch

Reputation: 201439

You're close, it's

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

Upvotes: 0

Mengjun
Mengjun

Reputation: 3197

You can make a small change as follows:

From 

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

To

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

Output in Console;

 10 25 29 13 46 30 26 57 41 34 88 52 60 77 82

Upvotes: 5

Jason
Jason

Reputation: 11832

Switch the following two lines:

for (int j = 0; j < cols; j++) {
    for (int i = 0; i < rows; i++) {

Upvotes: 1

Rakhitha
Rakhitha

Reputation: 328

Add a new line

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

BTW You will also want to do padding

Upvotes: -1

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