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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-844-backspace-string-compare.rkt | |
| parent | 6156a9ef7be4012063a042aafb4e9b0d7eadde8e (diff) | |
| download | gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.tar.gz gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.zip | |
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Diffstat (limited to 'racket/leetcode/lc-844-backspace-string-compare.rkt')
| -rw-r--r-- | racket/leetcode/lc-844-backspace-string-compare.rkt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/racket/leetcode/lc-844-backspace-string-compare.rkt b/racket/leetcode/lc-844-backspace-string-compare.rkt new file mode 100644 index 0000000..a07ec3c --- /dev/null +++ b/racket/leetcode/lc-844-backspace-string-compare.rkt @@ -0,0 +1,17 @@ +#lang racket + +(define/contract (process-backspace-string strng) + (-> string? string?) + (apply ~a (for/fold ([str-out '()] + #:result (reverse str-out)) + ([character (in-string strng)]) + (case character + [(#\#) (if (empty? str-out) + str-out + (cdr str-out))] + [else (cons character str-out)])))) + +(define/contract (backspace-compare s t) + (-> string? string? boolean?) + (equal? (process-backspace-string s) + (process-backspace-string t)))
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