diff options
Diffstat (limited to 'racket/leetcode/lc-1812-chessboard-square.rkt')
| -rw-r--r-- | racket/leetcode/lc-1812-chessboard-square.rkt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/racket/leetcode/lc-1812-chessboard-square.rkt b/racket/leetcode/lc-1812-chessboard-square.rkt new file mode 100644 index 0000000..206392c --- /dev/null +++ b/racket/leetcode/lc-1812-chessboard-square.rkt @@ -0,0 +1,7 @@ +#lang racket +(define/contract (square-is-white coordinates) + (-> string? boolean?) + (define file (first (string->list coordinates))) + (define rank (second (string->list coordinates))) + (or (and (odd? (char->integer file)) (even? (char->integer rank))) + (and (even? (char->integer file)) (odd? (char->integer rank)))))
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