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-717-1bit-and-2bit.rkt | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 leetcode/lc-717-1bit-and-2bit.rkt (limited to 'leetcode/lc-717-1bit-and-2bit.rkt') diff --git a/leetcode/lc-717-1bit-and-2bit.rkt b/leetcode/lc-717-1bit-and-2bit.rkt new file mode 100644 index 0000000..d9988ec --- /dev/null +++ b/leetcode/lc-717-1bit-and-2bit.rkt @@ -0,0 +1,12 @@ +#lang racket + +(define/contract (is-one-bit-character bits) + (-> (listof exact-integer?) boolean?) + (define/match (check-next-character x . xs) + [(0 '()) #true] + [(1 (list _ ..2)) (apply check-next-character (cdr xs))] + [(0 (list _ ..1)) (apply check-next-character xs)] + [(_ _) #false]) + (apply check-next-character bits)) + +(is-one-bit-character (list 1 1 0 1 0)) \ No newline at end of file -- cgit v1.2.3