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| author | HJ <thechairman@thechairman.info> | 2023-01-17 12:46:04 -0500 |
|---|---|---|
| committer | HJ <thechairman@thechairman.info> | 2023-01-17 12:46:04 -0500 |
| commit | fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1 (patch) | |
| tree | d586a28650cbbfb20ece931a85bcce4c29e5e40b /leetcode/lc-1812-chessboard-square.rkt | |
| parent | bc5387512ba529072338648d6337ddab731b8b8c (diff) | |
| download | gleam_aoc-fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1.tar.gz gleam_aoc-fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1.zip | |
adding old leetcode solutions
Diffstat (limited to 'leetcode/lc-1812-chessboard-square.rkt')
| -rw-r--r-- | leetcode/lc-1812-chessboard-square.rkt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/leetcode/lc-1812-chessboard-square.rkt b/leetcode/lc-1812-chessboard-square.rkt new file mode 100644 index 0000000..206392c --- /dev/null +++ b/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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