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-rw-r--r--2015/day-05/day-05.rkt32
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diff --git a/2015/day-05/day-05.rkt b/2015/day-05/day-05.rkt
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-#lang racket
-(require "../../jj-aoc.rkt"
- threading)
-
-(define strs (port->lines (open-day 5 2015)))
-
-;; part 1
-(define (at-least-three-vowels? str)
- (~>> str (regexp-replace* #px"[^aeiou]" _ "") string-length (<= 3)))
-
-(define (at-least-one-pair? str)
- (regexp-match? #px"(.)\\1{1,}" str))
-
-(define (no-forbidden-pairs? str)
- (~>> (list "ab" "cd" "pq" "xy") (ormap (λ~>> (string-contains? str))) not))
-
-(define (nice? str)
- (~>> (list at-least-three-vowels? at-least-one-pair? no-forbidden-pairs?) (andmap (λ (f) (f str)))))
-
-(count nice? strs)
-
-;; part 2
-(define (repeating-pair? str)
- (regexp-match? #px"(..).*\\1" str))
-
-(define (symmetry? str)
- (regexp-match? #px"(.).\\1" str))
-
-(define (new-nice? str)
- (~>> (list repeating-pair? symmetry?) (andmap (λ (f) (f str)))))
-
-(count new-nice? strs)