this is my solution
defmodule Main do
def map(x,f,n) do
if(n==1) do
Enum.map(x,f)
else
Enum.map(x,&map(&1,f,n-1))
end
end
def is_num("") do
false
end
def is_num(x) do
x
|>String.codepoints()
|>Enum.map(fn char -> char >= "0" and char <= "9" end)
|>Enum.all?()
end
def win_count([win,ours]) do
ours
|>Enum.filter(&Enum.member?(win,&1))
|>Enum.count()
end
end
#IO.puts(input)
cards=input
|>String.trim()
|>String.split("\n")
#|>IO.inspect()
ans=cards
|>Enum.map(&String.split(&1,"|"))
|>Main.map(&String.split(&1," "),2)
|>Main.map(
fn x->
Enum.filter(x,&Main.is_num(&1))
end,
2)
|>Main.map(&String.to_integer(&1),3)
#|>IO.inspect(charlists: :as_lists)
|>Enum.map(&Main.win_count(&1))
|>Enum.filter(fn x-> x !=0 end)
|>Enum.map(fn x-> 2**(x-1) end)
|>Enum.sum()
|>IO.inspect()
its not the pretist thing ever and I think the fact I am new to elixir really shows.
the 3rd day took me hours to complete because I tried to force a solution i saw in my head that would work in python with a for loop and it just didnt work.
I found myself using distributed map quite alot and I wish it was a core part of the languge.
its just something that comes up alot
