diff options
| author | H.J <thechairman@thechairman.info> | 2024-10-09 11:36:55 -0400 |
|---|---|---|
| committer | H.J <thechairman@thechairman.info> | 2024-10-09 11:36:55 -0400 |
| commit | 8777ff071f7bb37631baa7b6717ad29961e50911 (patch) | |
| tree | 6d59c4ed58e454b960339c3d1151f0a879e8d7cb /racket/aoc2015/day-01/day-01.rkt | |
| parent | 6156a9ef7be4012063a042aafb4e9b0d7eadde8e (diff) | |
| download | gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.tar.gz gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.zip | |
sorting by language
Diffstat (limited to 'racket/aoc2015/day-01/day-01.rkt')
| -rw-r--r-- | racket/aoc2015/day-01/day-01.rkt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/racket/aoc2015/day-01/day-01.rkt b/racket/aoc2015/day-01/day-01.rkt new file mode 100644 index 0000000..efbd02a --- /dev/null +++ b/racket/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)])) |