diff options
Diffstat (limited to 'racket/leetcode/lc-771-jewels-and-stones.rkt')
| -rw-r--r-- | racket/leetcode/lc-771-jewels-and-stones.rkt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/racket/leetcode/lc-771-jewels-and-stones.rkt b/racket/leetcode/lc-771-jewels-and-stones.rkt new file mode 100644 index 0000000..40ccf14 --- /dev/null +++ b/racket/leetcode/lc-771-jewels-and-stones.rkt @@ -0,0 +1,6 @@ +#lang racket + +(define/contract (num-jewels-in-stones jewels stones) + (-> string? string? exact-integer?) + (for/sum ([jewel (in-string jewels)]) + (count (curry char=? jewel) (string->list stones))))
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