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9 random digits (Posted on 2003-05-02) Difficulty: 3 of 5
Suppose you want to make a random 9 digit number, using every number from 1 to 9 exactly once. You have a process called random(top) that gives a random number up to top (if top was 5, it would give random numbers from 1 to 5)

a) How could you do this?

b) If top couldn't be more than 9, how could you do this using random(top) only 9 times (or less)?

See The Solution Submitted by Gamer    
Rating: 3.4000 (5 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: C++ solution | Comment 13 of 20 |
(In reply to C++ solution by friedlinguini)

Hmmm... Fried, I used to know some C++ way back when, but reading this took some effort. Looks like you're relying on some standard library functions here, (not sure what random_shuffle() does), which would probably be missing the point of the excercise.

This isn't a straight programming category after all.
  Posted by levik on 2003-05-03 13:45:29

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