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Oleksii Trekhleb
2018-04-13 17:38:00 +03:00
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src/algorithms/string/permutations/README.md
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@ -7,3 +7,13 @@ A string of length `n` has `n!` permutation.
Below are the permutations of string `ABC`.
`ABC ACB BAC BCA CBA CAB`
When the order doesn't matter, it is a **Combination**.
When the order **does** matter it is a **Permutation**.
![Permutation Lock](https://www.mathsisfun.com/combinatorics/images/combination-lock.jpg)
## References
[Math Is Fun](https://www.mathsisfun.com/combinatorics/combinations-permutations.html)