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!7 p-exp { pnl(iteratorToList(shuffledIterator(words("This is a very good test")))); } static <A> Iterator<A> shuffledIterator(final List<A> l) { return new Iterator<A>() { Random randomizer = new Random(); int n = l.size(); int i = 0; Map<Integer, A> shuffled = new HashMap(); public boolean hasNext() { ret i < n; } public A next() { int j = i+randomizer.nextInt(n-i); A a = get(i), b = get(j); shuffled.put(j, a); shuffled.remove(i); ++i; return b; } A get(int i) { return shuffled.containsKey(i) ? shuffled.get(i) : l.get(i); } }; }
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Snippet ID: | #1017663 |
Snippet name: | shuffledIterator, Java version |
Eternal ID of this version: | #1017663/3 |
Text MD5: | 6745fc37eca9a6aea80bb48ee99d8ecb |
Transpilation MD5: | 7874a5721a1d8a310ddccdfb733aef8b |
Author: | stefan |
Category: | javax |
Type: | JavaX source code (desktop) |
Public (visible to everyone): | Yes |
Archived (hidden from active list): | No |
Created/modified: | 2018-07-31 19:02:22 |
Source code size: | 665 bytes / 29 lines |
Pitched / IR pitched: | No / No |
Views / Downloads: | 428 / 1076 |
Version history: | 2 change(s) |
Referenced in: | -