Bingo card generator

Question

A Bingo card is five columns of five squares each, with the middle square designated "FREE". Numbers cannot duplicate.

The five columns are populated with the following range of numbers:

• B:1-15
• I:16-30
• N:31-45
• G:46-60
• O:61-75

In as few characters as possible, output a string that can be interpreted as a randomized Bingo card. For example:

1,2,3,4,5,16,17,18,19,20,31,32,33,34,35,46,47,48,49,50,61,62,63,64,65

This example is not randomized so that I can show that column 1 is populated with 1,2,3,4,5. Also note that the free space has not been given any special treatment because the front-end that interprets this string will skip it.

Another example would be:

1,16,31,46,61,2,17,32,47,62...

In this example, the output is by row instead of by column.

A third example might be:

01020304051617181920313233343546474849506162636465

This is the same output as the 1st example except in fixed length.

Answer 1

Ruby 1.9, 48 characters

$><<(0..4).map{|i|[*1..75][15*i,15].sample 5}*?,

Answer 2

Windows PowerShell, 51 54

I'm not sure whether I understood your task correctly, though.

(0..4|%{($x=15*$_+1)..($x+14)|random -c 5})-join','

Sample outputs:

5,9,1,7,13,26,18,23,17,22,37,33,34,41,44,50,53,59,60,58,73,72,64,69,66
14,10,13,5,1,24,29,26,17,30,34,33,43,41,38,59,50,60,49,56,71,61,72,70,68
3,11,4,5,13,27,16,25,26,22,43,34,42,32,38,51,52,49,58,54,61,70,73,71,62
1,9,13,12,4,23,25,20,26,22,40,33,35,44,37,55,47,52,59,53,74,70,75,64,69
8,6,7,1,9,16,21,23,18,17,35,41,37,38,34,60,50,57,51,59,66,75,73,74,71
11,6,13,4,1,29,27,24,22,18,40,35,41,32,43,51,54,57,58,53,74,71,69,66,64

Answer 3

PHP 106

<?$z=1;for($i=0;$i<5;$i++){for($j=0;$j<rand(1,5);$j++){$o[]=rand($z,$z+15);}$z+=15;}echo implode(",", $o);

I'm not sure I understood correctly the problem... Can you provide a more detailed explanation?

Answer 4

Clojure - 52 chars

(map #(take 5(shuffle %))(partition 15(range 1 76)))

Example output (note that it provides the separate rows as sub-lists):

((4 1 12 10 2) (25 23 21 16 27) (39 33 45 44 43) (48 53 59 54 47) (73 71 61 64 63))