From fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1 Mon Sep 17 00:00:00 2001 From: HJ Date: Tue, 17 Jan 2023 12:46:04 -0500 Subject: adding old leetcode solutions --- leetcode/lc-905-sort-by-parity.rkt | 7 +++++++ 1 file changed, 7 insertions(+) create mode 100644 leetcode/lc-905-sort-by-parity.rkt (limited to 'leetcode/lc-905-sort-by-parity.rkt') diff --git a/leetcode/lc-905-sort-by-parity.rkt b/leetcode/lc-905-sort-by-parity.rkt new file mode 100644 index 0000000..7c736f3 --- /dev/null +++ b/leetcode/lc-905-sort-by-parity.rkt @@ -0,0 +1,7 @@ +#lang racket +(define/contract (sort-array-by-parity A) + (-> (listof exact-integer?) (listof exact-integer?)) + ((compose flatten (if (odd? (car A)) reverse identity)) + (group-by (λ (n) (modulo n 2)) A))) + +(sort-array-by-parity '(1 1 3 4)) \ No newline at end of file -- cgit v1.2.3