diff options
Diffstat (limited to 'racket/leetcode/lc-551-student-attendance-record-1.rkt')
| -rw-r--r-- | racket/leetcode/lc-551-student-attendance-record-1.rkt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/racket/leetcode/lc-551-student-attendance-record-1.rkt b/racket/leetcode/lc-551-student-attendance-record-1.rkt new file mode 100644 index 0000000..c5f1456 --- /dev/null +++ b/racket/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")
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