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| 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/leetcode/lc-1018-binary-prefix.rkt | |
| parent | 6156a9ef7be4012063a042aafb4e9b0d7eadde8e (diff) | |
| download | gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.tar.gz gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.zip | |
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Diffstat (limited to 'racket/leetcode/lc-1018-binary-prefix.rkt')
| -rw-r--r-- | racket/leetcode/lc-1018-binary-prefix.rkt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/racket/leetcode/lc-1018-binary-prefix.rkt b/racket/leetcode/lc-1018-binary-prefix.rkt new file mode 100644 index 0000000..fa82681 --- /dev/null +++ b/racket/leetcode/lc-1018-binary-prefix.rkt @@ -0,0 +1,11 @@ +#lang racket +(define/contract (prefixes-div-by5 A) + (-> (listof exact-integer?) (listof boolean?)) + (define ns (make-vector (length A) #false)) + (for/fold ([acc 0]) + ([b (in-list A)] + [i (in-naturals)]) + (let ([test-val (remainder (+ (* 2. acc) b) 5)]) + (when (= 0 test-val) (vector-set! ns i #true)) + test-val)) + (vector->list ns))
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