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logan_2022/day3/day3part2.lua

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2022-12-03 01:05:08 -05:00
file = io.open("input")
io.input(file)
score = 0
data = {}
for line in file:lines() do
table.insert(data, line)
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]
for n = 1, #one do
local char = string.sub(one, n, n)
if string.match(two, char) and string.match(three, char) then
if char == string.upper(char) then
score = score + string.byte(char) - string.byte("A") + 27
goto continue
elseif char == string.lower(char) then
score = score + string.byte(char) - string.byte("a") + 1
goto continue
end
end
end
::continue::
end
print(score)