forked from adventofcode/logan_2022
32 lines
761 B
Lua
32 lines
761 B
Lua
file = io.open("input")
|
|
io.input(file)
|
|
|
|
score = 0
|
|
data = {}
|
|
|
|
for line in file:lines() do
|
|
table.insert(data, line)
|
|
end
|
|
|
|
function find_duplicates(one, two, three)
|
|
for i = 1, #one do
|
|
local char = string.sub(one, i, i)
|
|
if string.match(two, char) and string.match(three, char) then
|
|
if char == string.upper(char) then
|
|
return string.byte(char) - string.byte("A") + 27
|
|
elseif char == string.lower(char) then
|
|
return string.byte(char) - string.byte("a") + 1
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
for i = 1, #data/3 do
|
|
local one = data[(i-1)*3+1]
|
|
local two = data[(i-1)*3+2]
|
|
local three = data[(i-1)*3+3]
|
|
|
|
score = score + find_duplicates(one, two, three)
|
|
end
|
|
|
|
print(score)
|