how to print an array in random order in java?
example:
int[] myArray = {5,4,3,2,1};
when printed, result should possibly be:
3 2 1 4 5
or
4 3 2 5 1
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how to print an array in random order in java?
example:
int[] myArray = {5,4,3,2,1};
when printed, result should possibly be:
3 2 1 4 5
or
4 3 2 5 1
You should look at writing a Fisher-Yates shuffle. It’s pretty easy to do, and efficient. Effectively you logically partition the array into a “shuffled” part and an “unshuffled part” – then repeatedly pick a random element from the unshuffled part and swap it with the first element from the unshuffled part, to make that part of the shuffled part.
Alternatively, create a
List<Integer>instead and then useCollections.shuffle. It’s unfortunate that there isn’t an equivalent for arrays, but Java’s type system doesn’t do terribly well in terms of making either arrays or primitives generic 🙁(I’m assuming you know how to do the printing side, and that it’s the shuffling side which is the tricky bit for you.)