Permutations: Difference between revisions
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→An Uncommon Ordering: corrected typo
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by stuffing the 0 into each of the 4 possible positions that it could go.
The code start with a nest of all the permutations of 0 items <code>[ [ ] ]</code>, and each time though the outer <code>times</code> loop (i.e. 4 times in the example) it takes each of the permutations generated so far (this is the <code>witheach</code> loop) and applies the central idea
'''Some aids to reading the code.'''
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