JAVA problem of three dimensional array

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Dear web developers,

I have problem with the following JAVA code:

Java

class threeMatrix{

  public static void main(String[] args){

    int threeD[][][] = new int[3][4][5];

    int i,j,k;

    for(i=0;i<3;i++){

      for(j=0;j<4;j++){

	for(k=0;k<5;k++){

	  threeD[i][j][k] = i*j*k;

	  System.out.print(threeD[i][j][k]);

	}

	System.out.println();

      }

      System.out.println();

    }

  }

}

the output:

0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
 
0 0 0 0 0
0 1 2 3 4
0 2 4 6 8
0 3 6 9 12

0 0 0 0 0
0 2 4 6 8
0 4 8 12 16
0 6 12 18 24

But I want the output to be:

0 0 0 0 0	 0 0 0 0 0	 0 0 0 0 0
0 0 0 0 0	 0 1 2 3 4	 0 2 4 6 8
0 0 0 0 0	 0 2 4 6 8	 0 4 8 12 16
0 0 0 0 0	 0 3 6 9 12	 0 6 12 18 24

Posted 14-Dec-11 20:57pm

Member 8061953

Updated 14-Dec-11 21:30pm

CPallini

v2

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Nagy Vilmos · Answer 1 · 2011-12-14T21:42:00

It is very trivial, so I'll leave the code to you.

First, the first two for loops should be swapped:

Java

for (j=0;j<4;j++) {
    for (i=0;i<3;i++) {
        for (k=0;k<5;k++) {
           // code
        }
    }
}

Then it's just a case of getting your space, tab and linefeed at the right point.
It will always be easier if you learn to get the data in the right order first, then worry about what you are going to do with it.

CPallini · Answer 2 · 2011-12-14T21:46:00

Solution 2

Do you mean this?

Java

public static void main(String[] args){
 
    int threeD[][][] = new int[3][4][5];
 
    int i,j,k;
 
    for(j=0;j<4;j++){
      for(i=0;i<3;i++){
	for(k=0;k<5;k++){
	  threeD[i][j][k] = i*j*k; 
          System.out.print(threeD[i][j][k]);
          System.out.print(" ");
	} 
        System.out.print("      ");
      }
      System.out.println("");
    } 
  }
}

Posted 14-Dec-11 21:46pm

CPallini

Comments

TorstenH. 15-Dec-11 5:45am

there you go - homework done.

Nagy Vilmos 15-Dec-11 9:52am

Senor Carlo, you spoil him.

CPallini 15-Dec-11 13:44pm

I don't think so, monsieur. :-)

JAVA problem of three dimensional array

2 solutions

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Solution 2

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