README
¶
Advent of Code
Repository with my solutions of Advent of Code programming puzzles.
Usage
I restrict myself to use of Go standard library (and sometimes exp). All
solutions are meant as standalone binaries that read input from stdin and
print usually 2 lines (solutions of part 1 and 2) to the stdout.
To run any of the solutions do simply run:
cat ./YYYY/DD/test.txt | go run ./YYYY/DD
Disclaimer
These solutions are only as good so I can call it a (solved) day. They are absolutely not a showcase of my skills nor a good learning material. I do this for fun and joy during my lunchbreaks as the new puzzles pop up at 2PM JST.
Christmas tend to be a bit hectic in general (I am a married man, an expat living 8000km away from relatives and a fresh dad); so excuse me for brute force, unhandled corner cases, poor parsing of input or false assumption here and there.
Have a Merry Christmas and Happy New Year!
Directories
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2022
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01
command
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02
command
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03
command
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04
command
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05
command
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06
command
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07
command
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08
command
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09
command
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10
command
Read input from stdin, interpret the instructions; oputput sum of signal strengths at given cycle counts and render 40px scanlines.
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Read input from stdin, interpret the instructions; oputput sum of signal strengths at given cycle counts and render 40px scanlines. |
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11
command
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12
command
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13
command
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14
command
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15
command
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16
command
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17
command
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18
command
Read input from stdin.
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Read input from stdin. |
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19
command
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20
command
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21
command
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22
command
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23
command
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24
command
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25
command
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2023
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01
command
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02
command
Parse each line as game, produce sum of possible game ids and sum of minimum power of minimum cube numbers.
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Parse each line as game, produce sum of possible game ids and sum of minimum power of minimum cube numbers. |
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03
command
Find sum of all numbers adjacent (diagonally too) to non '.' characters and sum of all gear ratios (2 numbers adjacent to '*' multiplied).
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Find sum of all numbers adjacent (diagonally too) to non '.' characters and sum of all gear ratios (2 numbers adjacent to '*' multiplied). |
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04
command
Find sum of points of winning cards in original deck and count all cards in won cards deck.
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Find sum of points of winning cards in original deck and count all cards in won cards deck. |
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05
command
Parse almanac and find lowest seed destination.
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Parse almanac and find lowest seed destination. |
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06
command
Find multiplication of record beating attempts for three rides and number of ways to beat final race.
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Find multiplication of record beating attempts for three rides and number of ways to beat final race. |
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07
command
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08
command
Find number of steps from AAA to ZZZ and from all **A to all **Z.
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Find number of steps from AAA to ZZZ and from all **A to all **Z. |
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09
command
Find sums of extrapolated history numbers on right and left side of dataset.
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Find sums of extrapolated history numbers on right and left side of dataset. |
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10
command
Find half of length of the loop and number of contained tiles in it.
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Find half of length of the loop and number of contained tiles in it. |
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11
command
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12
command
Find sum of valid arrangements of working and non-working springs according to given stencil.
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Find sum of valid arrangements of working and non-working springs according to given stencil. |
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13
command
Find reflection line in given pattern either without smudge or with one smudge.
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Find reflection line in given pattern either without smudge or with one smudge. |
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14
command
Find board load after tilting north once and after 1000000000 all direction tilts.
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Find board load after tilting north once and after 1000000000 all direction tilts. |
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15
command
Find sum of step hashes and sum of lens powers.
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Find sum of step hashes and sum of lens powers. |
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16
command
Find number of lightbeam energized tiles, find maximum possible energized tiles possible when starting from any edge tile.
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Find number of lightbeam energized tiles, find maximum possible energized tiles possible when starting from any edge tile. |
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17
command
Find most heat-loss eficient path for up to 3 consecutive straight moves and for no less than 4 but up to 10 consecutive straight moves.
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Find most heat-loss eficient path for up to 3 consecutive straight moves and for no less than 4 but up to 10 consecutive straight moves. |
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18
command
Find area of polygon given as set of direction + length plotting instructions.
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Find area of polygon given as set of direction + length plotting instructions. |
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19
command
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20
command
Simulate circuit and find number of high and low signals after 1000 button presses; find number of button presses needed to get rx low.
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Simulate circuit and find number of high and low signals after 1000 button presses; find number of button presses needed to get rx low. |
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21
command
Find number of covered garden plots given the number of steps.
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Find number of covered garden plots given the number of steps. |
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