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authorH.J <thechairman@thechairman.info>2024-10-09 11:36:55 -0400
committerH.J <thechairman@thechairman.info>2024-10-09 11:36:55 -0400
commit8777ff071f7bb37631baa7b6717ad29961e50911 (patch)
tree6d59c4ed58e454b960339c3d1151f0a879e8d7cb /leetcode/lc-125-valid-palindrome.rkt
parent6156a9ef7be4012063a042aafb4e9b0d7eadde8e (diff)
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-rw-r--r--leetcode/lc-125-valid-palindrome.rkt12
1 files changed, 0 insertions, 12 deletions
diff --git a/leetcode/lc-125-valid-palindrome.rkt b/leetcode/lc-125-valid-palindrome.rkt
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@@ -1,12 +0,0 @@
-#lang racket
-
-(define/contract (is-palindrome s)
- (-> string? boolean?)
- (define clean-string
- (string-downcase (string-replace s #rx"[^A-Za-z0-9]" "")))
- (string-prefix? (apply string-append (map string (reverse (string->list clean-string))))
- (substring clean-string
- 0
- (ceiling (/ (string-length clean-string) 2)))))
-
-(is-palindrome "A man, a plan, a canal: Panama") \ No newline at end of file