aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

Data commit

Browse source
This commit is contained in:
Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

18
Task/Find-the-missing-permutation/Elixir/find-the-missing-permutation.elixir Normal file
View file

@ -0,0 +1,18 @@
defmodule RC do
def find_miss_perm(head, perms) do
all_permutations(head) -- perms
end
defp all_permutations(string) do
list = String.split(string, "", trim: true)
Enum.map(permutations(list), fn x -> Enum.join(x) end)
end
defp permutations([]), do: [[]]
defp permutations(list), do: (for x <- list, y <- permutations(list -- [x]), do: [x|y])
end
perms = ["ABCD", "CABD", "ACDB", "DACB", "BCDA", "ACBD", "ADCB", "CDAB", "DABC", "BCAD", "CADB", "CDBA",
"CBAD", "ABDC", "ADBC", "BDCA", "DCBA", "BACD", "BADC", "BDAC", "CBDA", "DBCA", "DCAB"]
IO.inspect RC.find_miss_perm( hd(perms), perms )