diff options
Diffstat (limited to 'racket/leetcode/lc-1450-students-doing-homework.rkt')
| -rw-r--r-- | racket/leetcode/lc-1450-students-doing-homework.rkt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/racket/leetcode/lc-1450-students-doing-homework.rkt b/racket/leetcode/lc-1450-students-doing-homework.rkt new file mode 100644 index 0000000..14ff079 --- /dev/null +++ b/racket/leetcode/lc-1450-students-doing-homework.rkt @@ -0,0 +1,12 @@ +#lang racket +(define/contract (busy-student start-time end-time query-time) + (-> (listof exact-integer?) (listof exact-integer?) exact-integer? exact-integer?) + (count (λ (start end) + (and (start . <= . query-time) + (query-time . <= . end))) start-time end-time)) + +(busy-student '(1 2 3) '(3 2 7) 4) +(busy-student '(4) '(4) 4) +(busy-student '(9 8 7 6 5 4 3 2 1) + '(10 10 10 10 10 10 10 10 10) + 5)
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