Snippets tagged rotate
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Rotate List
Rotate List
2 people like this
Like the snippet!Posted: 9 years ago by Pitch Rock
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Rotate or shift lists
This rotates or shifts a list. Unlike http://www.fssnip.net/qY/title/Rotate-List, which runs exponentially, this runs at O(n). In case of overflow (i.e., shift index is larger than the size of the list) will run at most once more with the modulo. This is done to prevent using `List.length` prior to entering the function, as that would lead to a perf punishment of an extra O(n) on each invocation. For large lists, `shift largeList 1` would then get a big performance hit.
1 people like this
Like the snippet!Posted: 2 years ago by Abel Braaksma