leetcode-racket

My LeetCode solutions in Racket.

Most were written as experiments or for fun, so don't expect them to be optimal.

Layout

Solutions are named as <id>-<title>.rkt.
LeetCode pre-defined types are in separate modules and are required by solutions that use them.

Name		Name	Last commit message	Last commit date
Latest commit History 94 Commits
1-two-sum.rkt		1-two-sum.rkt
10-regular-expression-matching-with-derivatives.rkt		10-regular-expression-matching-with-derivatives.rkt
10-regular-expression-matching.rkt		10-regular-expression-matching.rkt
1006-clumsy-factorial.rkt		1006-clumsy-factorial.rkt
101-symmetric-tree.rkt		101-symmetric-tree.rkt
102-binary-tree-level-order-traversal.rkt		102-binary-tree-level-order-traversal.rkt
103-binary-tree-zigzag-level-order-traversal.rkt		103-binary-tree-zigzag-level-order-traversal.rkt
1035-uncrossed-lines.rkt		1035-uncrossed-lines.rkt
104-maximum-depth-of-binary-tree.rkt		104-maximum-depth-of-binary-tree.rkt
1106-parsing-a-boolean-expression.rkt		1106-parsing-a-boolean-expression.rkt
111-minimum-depth-of-binary-tree.rkt		111-minimum-depth-of-binary-tree.rkt
113-path-sum-ii.rkt		113-path-sum-ii.rkt
1137-n-th-tribonacci-number.rkt		1137-n-th-tribonacci-number.rkt
114-flatten-binary-tree-to-linked-list.rkt		114-flatten-binary-tree-to-linked-list.rkt
1239-maximum-length-of-a-concatenated-string-with-unique-characters.rkt		1239-maximum-length-of-a-concatenated-string-with-unique-characters.rkt
124-binary-tree-maximum-path-sum.rkt		124-binary-tree-maximum-path-sum.rkt
1310-xor-queries-of-a-subarray.rkt		1310-xor-queries-of-a-subarray.rkt
135-candy.rkt		135-candy.rkt
14-longest-common-prefix.rkt		14-longest-common-prefix.rkt
144-binary-tree-preorder-traversal.rkt		144-binary-tree-preorder-traversal.rkt
145-binary-tree-postorder-traversal.rkt		145-binary-tree-postorder-traversal.rkt
148-sort-list-natural-merge.rkt		148-sort-list-natural-merge.rkt
148-sort-list.rkt		148-sort-list.rkt
151-reverse-words-in-a-string.rkt		151-reverse-words-in-a-string.rkt
160-intersection-of-two-linked-lists.rkt		160-intersection-of-two-linked-lists.rkt
168-excel-sheet-column-title.rkt		168-excel-sheet-column-title.rkt
17-letter-combinations-of-a-phone-number.rkt		17-letter-combinations-of-a-phone-number.rkt
179-largest-number.rkt		179-largest-number.rkt
1833-maximum-ice-cream-bars.rkt		1833-maximum-ice-cream-bars.rkt
1846-maximum-element-after-decreasing-and-rearranging.rkt		1846-maximum-element-after-decreasing-and-rearranging.rkt
1899-merge-triplets-to-form-target-triplet.rkt		1899-merge-triplets-to-form-target-triplet.rkt
198-house-robber-lazy.rkt		198-house-robber-lazy.rkt
198-house-robber.rkt		198-house-robber.rkt
199-binary-tree-right-side-view.rkt		199-binary-tree-right-side-view.rkt
2-add-two-numbers.rkt		2-add-two-numbers.rkt
200-number-of-islands.rkt		200-number-of-islands.rkt
203-remove-linked-list-elements.rkt		203-remove-linked-list-elements.rkt
207-course-schedule.rkt		207-course-schedule.rkt
208-implement-trie.rkt		208-implement-trie.rkt
21-merge-two-sorted-lists.rkt		21-merge-two-sorted-lists.rkt
210-course-schedule-ii-pure.rkt		210-course-schedule-ii-pure.rkt
210-course-schedule-ii.rkt		210-course-schedule-ii.rkt
213-house-robber-ii.rkt		213-house-robber-ii.rkt
215-kth-largest-element-in-an-array.rkt		215-kth-largest-element-in-an-array.rkt
22-generate-parentheses.rkt		22-generate-parentheses.rkt
220-contains-duplicate-iii.rkt		220-contains-duplicate-iii.rkt
224-basic-calculator.rkt		224-basic-calculator.rkt
232-implement-queue-using-stacks.rkt		232-implement-queue-using-stacks.rkt
24-swap-nodes-in-pairs.rkt		24-swap-nodes-in-pairs.rkt
25-reverse-nodes-in-k-group.rkt		25-reverse-nodes-in-k-group.rkt
273-integer-to-english-words.rkt		273-integer-to-english-words.rkt
274-h-index.rkt		274-h-index.rkt
29-divide-two-integers.rkt		29-divide-two-integers.rkt
32-longest-valid-parentheses.rkt		32-longest-valid-parentheses.rkt
322-coin-change.rkt		322-coin-change.rkt
337-house-robber-iii.rkt		337-house-robber-iii.rkt
347-top-k-frequent-elements.rkt		347-top-k-frequent-elements.rkt
4-median-of-two-sorted-arrays.rkt		4-median-of-two-sorted-arrays.rkt
401-binary-watch.rkt		401-binary-watch.rkt
43-multiply-strings.rkt		43-multiply-strings.rkt
44-wildcard-matching.rkt		44-wildcard-matching.rkt
458-poor-pigs.rkt		458-poor-pigs.rkt
50-powx-n.rkt		50-powx-n.rkt
51-n-queens.rkt		51-n-queens.rkt
525-contiguous-array.rkt		525-contiguous-array.rkt
55-jump-game.rkt		55-jump-game.rkt
565-array-nesting.rkt		565-array-nesting.rkt
62-unique-paths.rkt		62-unique-paths.rkt
623-add-one-row-to-tree.rkt		623-add-one-row-to-tree.rkt
645-set-mismatch.rkt		645-set-mismatch.rkt
65-valid-number.rkt		65-valid-number.rkt
671-second-minimum-node-in-a-binary-tree.rkt		671-second-minimum-node-in-a-binary-tree.rkt
692-top-k-frequent-words.rkt		692-top-k-frequent-words.rkt
72-edit-distance.rkt		72-edit-distance.rkt
736-parse-lisp-expression-submod.rkt		736-parse-lisp-expression-submod.rkt
736-parse-lisp-expression.rkt		736-parse-lisp-expression.rkt
765-couples-holding-hands.rkt		765-couples-holding-hands.rkt
77-combinations.rkt		77-combinations.rkt
773-sliding-puzzle.rkt		773-sliding-puzzle.rkt
778-swim-in-rising-water.rkt		778-swim-in-rising-water.rkt
78-subsets.rkt		78-subsets.rkt
781-rabbits-in-forest.rkt		781-rabbits-in-forest.rkt
785-is-graph-bipartite.rkt		785-is-graph-bipartite.rkt
789-escape-the-ghosts.rkt		789-escape-the-ghosts.rkt
797-all-paths-from-source-to-target.rkt		797-all-paths-from-source-to-target.rkt
814-binary-tree-pruning.rkt		814-binary-tree-pruning.rkt
82-remove-duplicates-from-sorted-list-ii.rkt		82-remove-duplicates-from-sorted-list-ii.rkt
83-remove-duplicates-from-sorted-list.rkt		83-remove-duplicates-from-sorted-list.rkt
86-partition-list.rkt		86-partition-list.rkt
87-scramble-string-lazy.rkt		87-scramble-string-lazy.rkt
87-scramble-string.rkt		87-scramble-string.rkt
90-subsets-ii.rkt		90-subsets-ii.rkt
909-snakes-and-ladders.rkt		909-snakes-and-ladders.rkt
94-binary-tree-inorder-traversal.rkt		94-binary-tree-inorder-traversal.rkt
997-find-the-town-judge.rkt		997-find-the-town-judge.rkt
LICENSE		LICENSE
README.md		README.md
list-node.rkt		list-node.rkt
tree-node.rkt		tree-node.rkt

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