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.vscode
.vscode
 
 
.gitignore
.gitignore
 
 
104.maximum-depth-of-binary-tree.py
104.maximum-depth-of-binary-tree.py
 
 
12.integer-to-roman.py
12.integer-to-roman.py
 
 
122.best-time-to-buy-and-sell-stock-ii.py
122.best-time-to-buy-and-sell-stock-ii.py
 
 
125.valid-palindrome.py
125.valid-palindrome.py
 
 
13.roman-to-integer.py
13.roman-to-integer.py
 
 
1302.deepest-leaves-sum.py
1302.deepest-leaves-sum.py
 
 
1329.sort-the-matrix-diagonally.ts
1329.sort-the-matrix-diagonally.ts
 
 
1332.remove-palindromic-subsequences.py
1332.remove-palindromic-subsequences.py
 
 
1342.number-of-steps-to-reduce-a-number-to-zero.py
1342.number-of-steps-to-reduce-a-number-to-zero.py
 
 
136.single-number.py
136.single-number.py
 
 
138.copy-list-with-random-pointer.py
138.copy-list-with-random-pointer.py
 
 
14.longest-common-prefix.py
14.longest-common-prefix.py
 
 
141.linked-list-cycle.py
141.linked-list-cycle.py
 
 
1437.check-if-all-1-s-are-at-least-length-k-places-away.py
1437.check-if-all-1-s-are-at-least-length-k-places-away.py
 
 
160.intersection-of-two-linked-lists.py
160.intersection-of-two-linked-lists.py
 
 
1631.path-with-minimum-effort.py
1631.path-with-minimum-effort.py
 
 
1640.check-array-formation-through-concatenation.py
1640.check-array-formation-through-concatenation.py
 
 
1641.count-sorted-vowel-strings.py
1641.count-sorted-vowel-strings.py
 
 
1646.get-maximum-in-generated-array.py
1646.get-maximum-in-generated-array.py
 
 
1649.create-sorted-array-through-instructions.py
1649.create-sorted-array-through-instructions.py
 
 
1657.determine-if-two-strings-are-close.ts
1657.determine-if-two-strings-are-close.ts
 
 
1658.minimum-operations-to-reduce-x-to-zero.py
1658.minimum-operations-to-reduce-x-to-zero.py
 
 
1663.smallest-string-with-a-given-numeric-value.py
1663.smallest-string-with-a-given-numeric-value.py
 
 
1673.find-the-most-competitive-subsequence.ts
1673.find-the-most-competitive-subsequence.ts
 
 
1675.minimize-deviation-in-array.py
1675.minimize-deviation-in-array.py
 
 
1679.max-number-of-k-sum-pairs.ts
1679.max-number-of-k-sum-pairs.ts
 
 
1680.concatenation-of-consecutive-binary-numbers.py
1680.concatenation-of-consecutive-binary-numbers.py
 
 
1721.swapping-nodes-in-a-linked-list.py
1721.swapping-nodes-in-a-linked-list.py
 
 
189.rotate-array.py
189.rotate-array.py
 
 
19.remove-nth-node-from-end-of-list.py
19.remove-nth-node-from-end-of-list.py
 
 
191.number-of-1-bits.py
191.number-of-1-bits.py
 
 
199.binary-tree-right-side-view.py
199.binary-tree-right-side-view.py
 
 
2.add-two-numbers.py
2.add-two-numbers.py
 
 
20.valid-parentheses.ts
20.valid-parentheses.ts
 
 
204.count-primes.py
204.count-primes.py
 
 
206.reverse-linked-list.py
206.reverse-linked-list.py
 
 
21.merge-two-sorted-lists.py
21.merge-two-sorted-lists.py
 
 
215.kth-largest-element-in-an-array.py
215.kth-largest-element-in-an-array.py
 
 
217.contains-duplicate.py
217.contains-duplicate.py
 
 
23.merge-k-sorted-lists.ts
23.merge-k-sorted-lists.ts
 
 
234.palindrome-linked-list.py
234.palindrome-linked-list.py
 
 
237.delete-node-in-a-linked-list.py
237.delete-node-in-a-linked-list.py
 
 
240.search-a-2-d-matrix-ii.py
240.search-a-2-d-matrix-ii.py
 
 
242.valid-anagram.py
242.valid-anagram.py
 
 
268.missing-number.py
268.missing-number.py
 
 
28.implement-str-str.py
28.implement-str-str.py
 
 
284.peeking-iterator.py
284.peeking-iterator.py
 
 
3.longest-substring-without-repeating-characters.py
3.longest-substring-without-repeating-characters.py
 
 
304.range-sum-query-2-d-immutable.py
304.range-sum-query-2-d-immutable.py
 
 
31.next-permutation.py
31.next-permutation.py
 
 
326.power-of-three.py
326.power-of-three.py
 
 
344.reverse-string.py
344.reverse-string.py
 
 
350.intersection-of-two-arrays-ii.py
350.intersection-of-two-arrays-ii.py
 
 
354.russian-doll-envelopes.py
354.russian-doll-envelopes.py
 
 
36.valid-sudoku.py
36.valid-sudoku.py
 
 
376.wiggle-subsequence.py
376.wiggle-subsequence.py
 
 
377.combination-sum-iv.py
377.combination-sum-iv.py
 
 
38.count-and-say.py
38.count-and-say.py
 
 
387.first-unique-character-in-a-string.py
387.first-unique-character-in-a-string.py
 
 
417.pacific-atlantic-water-flow.py
417.pacific-atlantic-water-flow.py
 
 
423.reconstruct-original-digits-from-english.py
423.reconstruct-original-digits-from-english.py
 
 
48.rotate-image.py
48.rotate-image.py
 
 
5.longest-palindromic-substring.ts
5.longest-palindromic-substring.ts
 
 
509.fibonacci-number.py
509.fibonacci-number.py
 
 
524.longest-word-in-dictionary-through-deleting.py
524.longest-word-in-dictionary-through-deleting.py
 
 
535.encode-and-decode-tiny-url.py
535.encode-and-decode-tiny-url.py
 
 
538.convert-bst-to-greater-tree.py
538.convert-bst-to-greater-tree.py
 
 
554.brick-wall.py
554.brick-wall.py
 
 
575.distribute-candies.py
575.distribute-candies.py
 
 
581.shortest-unsorted-continuous-subarray.py
581.shortest-unsorted-continuous-subarray.py
 
 
589.n-ary-tree-preorder-traversal.py
589.n-ary-tree-preorder-traversal.py
 
 
594.longest-harmonious-subsequence.py
594.longest-harmonious-subsequence.py
 
 
623.add-one-row-to-tree.py
623.add-one-row-to-tree.py
 
 
645.set-mismatch.py
645.set-mismatch.py
 
 
669.trim-a-binary-search-tree.py
669.trim-a-binary-search-tree.py
 
 
7.reverse-integer.py
7.reverse-integer.py
 
 
706.design-hash-map.py
706.design-hash-map.py
 
 
71.simplify-path.py
71.simplify-path.py
 
 
714.best-time-to-buy-and-sell-stock-with-transaction-fee.py
714.best-time-to-buy-and-sell-stock-with-transaction-fee.py
 
 
775.global-and-local-inversions.py
775.global-and-local-inversions.py
 
 
785.is-graph-bipartite.py
785.is-graph-bipartite.py
 
 
8.string-to-integer-atoi.py
8.string-to-integer-atoi.py
 
 
82.remove-duplicates-from-sorted-list-ii.py
82.remove-duplicates-from-sorted-list-ii.py
 
 
821.shortest-distance-to-a-character.py
821.shortest-distance-to-a-character.py
 
 
856.score-of-parentheses.py
856.score-of-parentheses.py
 
 
86.partition-list.py
86.partition-list.py
 
 
869.reordered-power-of-2.py
869.reordered-power-of-2.py
 
 
870.advantage-shuffle.py
870.advantage-shuffle.py
 
 
881.boats-to-save-people.py
881.boats-to-save-people.py
 
 
895.maximum-frequency-stack.py
895.maximum-frequency-stack.py
 
 
906.super-palindromes.py
906.super-palindromes.py
 
 
936.stamping-the-sequence.py
936.stamping-the-sequence.py
 
 
966.vowel-spellchecker.py
966.vowel-spellchecker.py
 
 
971.flip-binary-tree-to-match-preorder-traversal.py
971.flip-binary-tree-to-match-preorder-traversal.py
 
 
977.squares-of-a-sorted-array.py
977.squares-of-a-sorted-array.py
 
 
98.validate-binary-search-tree.py
98.validate-binary-search-tree.py
 
 
987.vertical-order-traversal-of-a-binary-tree.py
987.vertical-order-traversal-of-a-binary-tree.py
 
 
991.broken-calculator.py
991.broken-calculator.py
 
 

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LeetCode

This is the LeetCode code repo.

I use the VSCode plugin Leetcode to interact with Leetcode.

Now I mainly use Python and Typescript.

Take the chance to improve coding sense and algorithm thinking.

I usually take monthly exercise, so every day I'll add one new question to this repo.

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