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// name: array_shuffle.ck
// desc: shuffling the contents of an array; useful for tasks like random without replacement
// author: kunwoo, nshaheed, andrew, ge | 1.5.0.0
// an array
[1,2,3,4,5] @=> int a[];
// uncomment to print array API
// a.help();
// uncomment to explicitly set a random seed
// Math.srandom(11);
// shuffle a few times
repeat( 10 )
{
// print
for( int i; i < a.size(); i++ )
{ cherr <= a[i] <= " "; } cherr <= IO.nl();
// shuffle!
a.shuffle();
}
// one way to do random without replacement
repeat( 3 )
{
cherr <= "--- random without replacment --- " <= IO.nl();
// shuffle!
a.shuffle();
// just go through array in order after shuffle
for( int i; i < a.size(); i++ )
{
// print the next "random" value
cherr <= "next value: " <= a[i] <= IO.nl();
}
}
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