combine array elements with elements of same array

Question

What i'm trying to achieve is that, I have an array,

for eg: a={1,2,3}

Now, I need an array which combines all the elements in the array.

ie, the output that is needed should be like.

{[1,1],[1,2],[1,3],[2,1],[2,2],[2,3],[3,1],[3,2],[3,3]}

I know that, in StackOverflow asking a question without showing what I have done is not at all appreciated, but still, I'm totally blank and i dont have any ideas to code this. Any help is very much appreciated.

T.J. Crowder · Accepted Answer · 2015-06-06 17:37:07Z

2

To generate the resulting array, use two loops, one nested inside the other, both using indexes (say, i and j) going from 0 through < length on the array. The two values for the resulting element in the new array come from a[i] and a[j].

answered Jun 6, 2015 at 17:37

T.J. Crowder

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Comments

Francisco Romero · Accepted Answer · 2015-06-06 17:42:34Z

1

What I think it's to make a double loop. Like this:

for(int i = 0; i < array.length; i++)
{
   for (int j = 0; j < array.length; j++)
   {
      System.out.println("[" + array[i] + "," + array[j] + "]");
   }
}

edited Jun 6, 2015 at 17:42

answered Jun 6, 2015 at 17:40

Francisco Romero

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2 Comments

T.J. Crowder Over a year ago

In general, best to reply to these kinds of questions with teaching rather than a code dump

Francisco Romero Over a year ago

@T.J.Crowder Yes, I usually don't post code for this kind of questions but, in this case, it would be equals to put "You have to use 2 loops" that to put the code above. Anyway, thanks for alert to me ;)

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