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Diffstat (limited to 'racket/aoc2021/day-01/day-01.pl')
| -rw-r--r-- | racket/aoc2021/day-01/day-01.pl | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/racket/aoc2021/day-01/day-01.pl b/racket/aoc2021/day-01/day-01.pl new file mode 100644 index 0000000..d3c3fa7 --- /dev/null +++ b/racket/aoc2021/day-01/day-01.pl @@ -0,0 +1,20 @@ +:- use_module(library(yall)). +:- use_module(library(apply)). + +get_data(Result) :- + setup_call_cleanup(open("day-01/input.txt", read, In), + (read_string(In, _, Str), + split_string(Str, "\n", "\s\t\n", Lines), + maplist(number_string, Result, Lines)), + close(In)). + +calculate_diffs(Result, WindowWidth) :- + get_data(Xs), + length(TrimLeft, WindowWidth), append(TrimLeft, RightSide, Xs), + length(TrimRight, WindowWidth), append(LeftSide, TrimRight, Xs), + maplist([X, Y, Z]>>(Z is Y - X), LeftSide, RightSide, Diffs), + include([X]>>(X > 0), Diffs, Increases), + length(Increases, Result). + +part1_answer(Result) :- calculate_diffs(Result, 1). +part2_answer(Result) :- calculate_diffs(Result, 3).
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