bendevski
I’m playing around with elixir and solving some leetcode problems but I ran into an issue. The following code:
defmodule Solution do
@spec climb_stairs(n :: integer) :: integer
def climb_stairs(n) do
climb_stairs(n, [1,0])
end
def climb_stairs(1, lis) do
[first, second | _] = lis
first + second
end
def climb_stairs(n, lis) do
[first, second ] = lis
climb_stairs(n-1, [first + second, second])
end
end
always has lis be [1,0] (the result is always 1). Could someone explain what I’m doing wrong?
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benwilson512
Hi @bendevski welcome! It would be helpful if you could explain what this function is supposed to do.
LostKobrakai
You never actually change the list:
bendevski
Thank you for the clear explanation. Mixed up the variables in my head and thought it was a language thing.