82 lines
1.9 KiB
Lua
Executable File
82 lines
1.9 KiB
Lua
Executable File
#!/usr/bin/lua
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-- See https://adventofcode.com/2025/day/3
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local DEBUG = false
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function debug(msg)
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if DEBUG then
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print(msg)
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end
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end
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function MaxJolt(Battery, Size)
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-- TODO - This going to be a rework, I need to loop 12 times
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local BatteryDigits = {}
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for I = 1, tonumber(Size) do
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BatteryDigits[I] = 0
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end
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-- lastdigit = tonumber(string.sub(Battery, -1))
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-- debug("lastdigit " .. lastdigit)
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--
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-- BatteryNoLast = string.sub(Battery, 0, -2)
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-- BatteryNoLast:gsub(".", function(c)
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-- table.insert(b, c)
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-- return c
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-- end)
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--
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-- for key, value in pairs(b) do
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-- checkdigit = tonumber(value)
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-- if firstdigit < checkdigit then
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-- firstdigit = checkdigit
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-- end
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-- end
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--
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-- local passedfirst = false
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-- for key, value in pairs(b) do
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-- checkdigit = tonumber(value)
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-- if passedfirst and seconddigit < checkdigit then
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-- seconddigit = checkdigit
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-- end
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-- if checkdigit == firstdigit then
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-- passedfirst = true
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-- end
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-- end
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--
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-- if seconddigit < lastdigit then
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-- seconddigit = lastdigit
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-- end
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--
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-- debug("First " .. firstdigit)
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-- debug("Second " .. seconddigit)
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-- return tostring(firstdigit) .. tostring(seconddigit)
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local BatteryString = ""
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for I = 1, tonumber(Size) do
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BatteryString = BatteryString .. tostring(BatteryDigits[I])
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end
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return BatteryString
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end
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function TestMaxJolt(Battery, Test, Size)
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local MJ = MaxJolt(Battery, Size)
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if MJ == Test then
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print("WIN - " .. Battery .. " " .. MJ .. " == " .. Test)
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else
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print("FAIL - " .. Battery .. " " .. MJ .. " != " .. Test)
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end
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end
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print("# Self Test")
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TestMaxJolt("987654321111111", "987654321111", 12)
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TestMaxJolt("811111111111119", "811111111119", 12)
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TestMaxJolt("234234234234278", "434234234278", 12)
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TestMaxJolt("818181911112111", "888911112111", 12)
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print("# Calculate MaxJolt")
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local TotalJolt = 0
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for battery_line in io.lines("full_input") do
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TotalJolt = TotalJolt + MaxJolt(battery_line)
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end
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print("Total " .. TotalJolt)
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