adventofcode-2021/utils.lua

20 lines
365 B
Lua

function split(text, sep)
local parts = {}
local start = 0
local from, to = text:find(sep)
while from ~= nil do
table.insert(parts, text:sub(start, from - 1))
text = text:sub(to + 1)
from, to = text:find(sep)
end
table.insert(parts, text)
return parts
end
function sign(n)
if n == 0 then return 0
elseif n < 0 then return -1
else return 1
end
end