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| author | J.J <thechairman@thechairman.info> | 2023-11-30 17:10:00 -0500 |
|---|---|---|
| committer | J.J <thechairman@thechairman.info> | 2023-11-30 17:10:00 -0500 |
| commit | 8ab65dc2da1742eb86ec636c50c7018385b68167 (patch) | |
| tree | c4fd556aca9b867cfa1f2f174128c30857353884 /aoc2015/day-01 | |
| parent | fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1 (diff) | |
| download | gleam_aoc-8ab65dc2da1742eb86ec636c50c7018385b68167.tar.gz gleam_aoc-8ab65dc2da1742eb86ec636c50c7018385b68167.zip | |
prep for 2023, renaming for consistency
Diffstat (limited to 'aoc2015/day-01')
| -rw-r--r-- | aoc2015/day-01/day-01.rkt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/aoc2015/day-01/day-01.rkt b/aoc2015/day-01/day-01.rkt new file mode 100644 index 0000000..efbd02a --- /dev/null +++ b/aoc2015/day-01/day-01.rkt @@ -0,0 +1,16 @@ +#lang racket +(require "../../jj-aoc.rkt") + +;; part 1 +(for/fold ([current-floor 0]) ([l (in-input-port-chars (open-day 1 2015))] [i (in-naturals)]) + (match l + [#\( (add1 current-floor)] + [#\) (sub1 current-floor)])) + +;; part 2 +(for/fold ([current-floor 0] [last-index 0] #:result (add1 last-index)) + ([l (in-input-port-chars (open-day 1 2015))] [i (in-naturals)]) + #:break (= current-floor -1) + (match l + [#\( (values (add1 current-floor) i)] + [#\) (values (sub1 current-floor) i)])) |