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author | HJ <thechairman@thechairman.info> | 2023-01-17 12:46:04 -0500 |
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committer | HJ <thechairman@thechairman.info> | 2023-01-17 12:46:04 -0500 |
commit | fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1 (patch) | |
tree | d586a28650cbbfb20ece931a85bcce4c29e5e40b /leetcode/lc-896-monotonic-array.rkt | |
parent | bc5387512ba529072338648d6337ddab731b8b8c (diff) | |
download | gleam_aoc-fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1.tar.gz gleam_aoc-fafbeaf9e3c09ba7a5bea7e47d5736001f8a5aa1.zip |
adding old leetcode solutions
Diffstat (limited to 'leetcode/lc-896-monotonic-array.rkt')
-rw-r--r-- | leetcode/lc-896-monotonic-array.rkt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/leetcode/lc-896-monotonic-array.rkt b/leetcode/lc-896-monotonic-array.rkt new file mode 100644 index 0000000..fa43244 --- /dev/null +++ b/leetcode/lc-896-monotonic-array.rkt @@ -0,0 +1,16 @@ +#lang racket +(define/contract (is-monotonic test-list) + (-> (listof exact-integer?) boolean?) + (cond [(empty? (cdr test-list)) #true] + [((car test-list) . > . (cadr test-list)) + (is-monotonic-direction test-list >=)] + [((car test-list) . < . (cadr test-list)) + (is-monotonic-direction test-list <=)] + [else (is-monotonic (cdr test-list))])) + +(define/contract (is-monotonic-direction test-list dir) + (-> (listof exact-integer?) procedure? boolean?) + (cond [(empty? (cdr test-list)) #true] + [((car test-list) . dir . (cadr test-list)) + (is-monotonic-direction (cdr test-list) dir)] + [else #false]))
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