Created
October 18, 2017 03:08
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find_first_free.ex
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| defmodule T do | |
| def find_first_free(arr), do: find_first_free(arr, 0, []) | |
| def find_first_free([], lowest_free, _leftovers), do: lowest_free | |
| def find_first_free([head | tail], lowest_free, leftovers) do | |
| if (lowest_free == head) do | |
| find_first_free(tail, lowest_free + 1, leftovers) | |
| else | |
| find_first_free(tail, lowest_free, [head | leftovers]) | |
| end | |
| end | |
| end |
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