From fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1 Mon Sep 17 00:00:00 2001 From: HJ Date: Tue, 17 Jan 2023 12:46:04 -0500 Subject: adding old leetcode solutions --- leetcode/lc-551-student-attendance-record-1.rkt | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 leetcode/lc-551-student-attendance-record-1.rkt (limited to 'leetcode/lc-551-student-attendance-record-1.rkt') diff --git a/leetcode/lc-551-student-attendance-record-1.rkt b/leetcode/lc-551-student-attendance-record-1.rkt new file mode 100644 index 0000000..c5f1456 --- /dev/null +++ b/leetcode/lc-551-student-attendance-record-1.rkt @@ -0,0 +1,11 @@ +#lang racket + +(define/contract (check-record s) + (-> string? boolean?) + (define s-list (map string (string->list s))) + (cond [(<= 2 (count (curry string=? "A") s-list)) #false] + [(string-contains? s "LLL") #false] + [else #true])) + +(check-record "PPALLP") +(check-record "PPALLL") \ No newline at end of file -- cgit v1.2.3