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Title: GitHub - Lid23/leetcode: LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解，记录自己的leetcode解题之路。)

Open Graph Title: GitHub - Lid23/leetcode: LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解，记录自己的leetcode解题之路。)

X Title: GitHub - Lid23/leetcode: LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解，记录自己的leetcode解题之路。)

Description: LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解，记录自己的leetcode解题之路。) - Lid23/leetcode

Open Graph Description: LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解，记录自己的leetcode解题之路。) - Lid23/leetcode

X Description: LeetCode Solutions: A Record of My Problem Solving Journey.( leetcode题解，记录自己的leetcode解题之路。) - Lid23/leetcode

Mail addresses
azl397985856@gmail.com

Opengraph URL: https://github.com/Lid23/leetcode

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0206.reverse-linked-list	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/206.reverse-linked-list.md
0219.contains-duplicate-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/219.contains-duplicate-ii.md
0226.invert-binary-tree	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/226.invert-binary-tree.md
0232.implement-queue-using-stacks	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/232.implement-queue-using-stacks.md
0263.ugly-number	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/263.ugly-number.md
0283.move-zeroes	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/283.move-zeroes.md
0342.power-of-four	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/342.power-of-four.md
0349.intersection-of-two-arrays	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/349.intersection-of-two-arrays.md
0371.sum-of-two-integers	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/371.sum-of-two-integers.md
0437.path-sum-iii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/437.path-sum-iii.md
0455.AssignCookies	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/455.AssignCookies.md
0501.find-mode-in-binary-search-tree	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/501.Find-Mode-in-Binary-Search-Tree.md
0575.distribute-candies	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/575.distribute-candies.md
0874.walking-robot-simulation	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/874.walking-robot-simulation.md
1260.shift-2d-grid	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1260.shift-2d-grid.md
1332.remove-palindromic-subsequences	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1332.remove-palindromic-subsequences.md
	https://patch-diff.githubusercontent.com/Lid23/leetcode#中等难度
0002. Add Two Numbers	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/2.addTwoNumbers.md
0003. Longest Substring Without Repeating Characters	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/3.longestSubstringWithoutRepeatingCharacters.md
0005.longest-palindromic-substring	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/5.longest-palindromic-substring.md
0011.container-with-most-water	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/11.container-with-most-water.md
0015.3-sum	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/15.3-sum.md
0017.Letter-Combinations-of-a-Phone-Number	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/17.Letter-Combinations-of-a-Phone-Number.md
0019. Remove Nth Node From End of List	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/19.removeNthNodeFromEndofList.md
0022.GenerateParentheses	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/22.GenerateParentheses.md
0024. Swap Nodes In Pairs	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/24.swapNodesInPairs.md
0029.divide-two-integers	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/29.divide-two-integers.md
0031.next-permutation	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/31.next-permutation.md
0033.search-in-rotated-sorted-array	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/33.search-in-rotated-sorted-array.md
0039.combination-sum	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/39.combination-sum.md
0040.combination-sum-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/40.combination-sum-ii.md
0046.permutations	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/46.permutations.md
0047.permutations-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/47.permutations-ii.md
0048.rotate-image	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/48.rotate-image.md
0049.group-anagrams	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/49.group-anagrams.md
0050.pow-x-n	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/50.pow-x-n.md
0055.jump-game	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/55.jump-game.md
0056.merge-intervals	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/56.merge-intervals.md
0060.permutation-sequence	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/60.permutation-sequence.md
0062.unique-paths	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/62.unique-paths.md
0073.set-matrix-zeroes	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/73.set-matrix-zeroes.md
0075.sort-colors	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/75.sort-colors.md
0078.subsets	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/78.subsets.md
0079.word-search	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/79.word-search-en.md
0080.remove-duplicates-from-sorted-array-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/80.remove-duplicates-from-sorted-array-ii.md
0086.partition-list	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/86.partition-list.md
0090.subsets-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/90.subsets-ii.md
0091.decode-ways	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/91.decode-ways.md
0092.reverse-linked-list-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/92.reverse-linked-list-ii.md
0094.binary-tree-inorder-traversal	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/94.binary-tree-inorder-traversal.md
0095.unique-binary-search-trees-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/95.unique-binary-search-trees-ii.md
0096.unique-binary-search-trees	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/96.unique-binary-search-trees.md
0098.validate-binary-search-tree	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/98.validate-binary-search-tree.md
0102.binary-tree-level-order-traversal	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/102.binary-tree-level-order-traversal.md
0103.binary-tree-zigzag-level-order-traversal	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/103.binary-tree-zigzag-level-order-traversal.md
105.Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.md	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/105.Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.md
0113.path-sum-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/113.path-sum-ii.md
0129.sum-root-to-leaf-numbers	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/129.sum-root-to-leaf-numbers.md
0130.surrounded-regions	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/130.surrounded-regions.md
0131.palindrome-partitioning	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/131.palindrome-partitioning.md
0139.word-break	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/139.word-break.md
0144.binary-tree-preorder-traversal	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/144.binary-tree-preorder-traversal.md
0150.evaluate-reverse-polish-notation	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/150.evaluate-reverse-polish-notation.md
0152.maximum-product-subarray	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/152.maximum-product-subarray.md
0199.binary-tree-right-side-view	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/199.binary-tree-right-side-view.md
0200.number-of-islands	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/200.number-of-islands.md
0201.bitwise-and-of-numbers-range	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/201.bitwise-and-of-numbers-range.md
0208.implement-trie-prefix-tree	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/208.implement-trie-prefix-tree.md
0209.minimum-size-subarray-sum	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/209.minimum-size-subarray-sum.md
0211.add-and-search-word-data-structure-design	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/211.add-and-search-word-data-structure-design.md
0215.kth-largest-element-in-an-array	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/215.kth-largest-element-in-an-array.md
0221.maximal-square	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/221.maximal-square.md
0229.majority-element-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/229.majority-element-ii.md
0230.kth-smallest-element-in-a-bst	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/230.kth-smallest-element-in-a-bst.md
0236.lowest-common-ancestor-of-a-binary-tree	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/236.lowest-common-ancestor-of-a-binary-tree.md
0238.product-of-array-except-self	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/238.product-of-array-except-self.md
0240.search-a-2-d-matrix-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/240.search-a-2-d-matrix-ii.md
0279.perfect-squares	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/279.perfect-squares.md
0309.best-time-to-buy-and-sell-stock-with-cooldown	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/309.best-time-to-buy-and-sell-stock-with-cooldown.md
0322.coin-change	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/322.coin-change.md
0328.odd-even-linked-list	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/328.odd-even-linked-list.md
0334.increasing-triplet-subsequence	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/334.increasing-triplet-subsequence.md
0343.integer-break	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/343.integer-break.md
0365.water-and-jug-problem	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/365.water-and-jug-problem.md
0378.kth-smallest-element-in-a-sorted-matrix	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/378.kth-smallest-element-in-a-sorted-matrix.md
0380.insert-delete-getrandom-o1	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/380.insert-delete-getrandom-o1.md
0416.partition-equal-subset-sum	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/416.partition-equal-subset-sum.md
0445.add-two-numbers-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/445.add-two-numbers-ii.md
0454.4-sum-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/454.4-sum-ii.md
0474.ones-and-zeros	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/474.ones-and-zeros-en.md
0494.target-sum	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/494.target-sum.md
0516.longest-palindromic-subsequence	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/516.longest-palindromic-subsequence.md
0518.coin-change-2	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/518.coin-change-2.md
0547.friend-circles	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/547.friend-circles-en.md
0560.subarray-sum-equals-k	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/560.subarray-sum-equals-k.md
0609.find-duplicate-file-in-system	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/609.find-duplicate-file-in-system.md
0820.short-encoding-of-words	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/820.short-encoding-of-words.md
0875.koko-eating-bananas	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/875.koko-eating-bananas.md
0877.stone-game	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/877.stone-game.md
0887.super-egg-drop	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/887.super-egg-drop.md
0900.rle-iterator	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/900.rle-iterator.md
0912.sort-an-array	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/912.sort-an-array.md
0935.knight-dialer	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/935.knight-dialer.md
1011.capacity-to-ship-packages-within-d-days	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1011.capacity-to-ship-packages-within-d-days.md
1014.best-sightseeing-pair	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1014.best-sightseeing-pair.md
1015.smallest-integer-divisible-by-k	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1015.smallest-integer-divisible-by-k.md
1019.next-greater-node-in-linked-list	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1019.next-greater-node-in-linked-list.md
1020.number-of-enclaves	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1020.number-of-enclaves.md
1023.camelcase-matching	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1023.camelcase-matching.md
1031.maximum-sum-of-two-non-overlapping-subarrays	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1031.maximum-sum-of-two-non-overlapping-subarrays.md
1104.path-in-zigzag-labelled-binary-tree	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1104.path-in-zigzag-labelled-binary-tree.md
1131.maximum-of-absolute-value-expression	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1131.maximum-of-absolute-value-expression.md
1186.maximum-subarray-sum-with-one-deletion	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1186.maximum-subarray-sum-with-one-deletion.md
1218.longest-arithmetic-subsequence-of-given-difference	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1218.longest-arithmetic-subsequence-of-given-difference.md
1227.airplane-seat-assignment-probability	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1227.airplane-seat-assignment-probability.md
1261.find-elements-in-a-contaminated-binary-tree	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1261.find-elements-in-a-contaminated-binary-tree.md
1262.greatest-sum-divisible-by-three	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1262.greatest-sum-divisible-by-three.md
1297.maximum-number-of-occurrences-of-a-substring	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1297.maximum-number-of-occurrences-of-a-substring.md
1310.xor-queries-of-a-subarray	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1310.xor-queries-of-a-subarray.md
1334.find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1334.find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance.md
1371.find-the-longest-substring-containing-vowels-in-even-counts	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1371.find-the-longest-substring-containing-vowels-in-even-counts.md
	https://patch-diff.githubusercontent.com/Lid23/leetcode#困难难度
0004.median-of-two-sorted-array	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/4.median-of-two-sorted-array.md
0023.merge-k-sorted-lists	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/23.merge-k-sorted-lists.md
0025.reverse-nodes-in-k-group	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/25.reverse-nodes-in-k-groups-cn.md
0030.substring-with-concatenation-of-all-words	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/30.substring-with-concatenation-of-all-words.md
0032.longest-valid-parentheses	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/32.longest-valid-parentheses.md
0042.trapping-rain-water	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/42.trapping-rain-water.md
0052.N-Queens-II	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/52.N-Queens-II.md
0084.largest-rectangle-in-histogram	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/84.largest-rectangle-in-histogram.md
0085.maximal-rectangle	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/85.maximal-rectangle.md
0124.binary-tree-maximum-path-sum	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/124.binary-tree-maximum-path-sum.md
0128.longest-consecutive-sequence	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/128.longest-consecutive-sequence.md
0145.binary-tree-postorder-traversal	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/145.binary-tree-postorder-traversal.md
0212.word-search-ii	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/212.word-search-ii.md
0239.sliding-window-maximum	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/239.sliding-window-maximum.md
0295.find-median-from-data-stream	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/295.find-median-from-data-stream.md
0301.remove-invalid-parentheses	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/301.remove-invalid-parentheses.md
0335.self-crossPing	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/335.self-crossing.md
0460.lfu-cache	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/460.lfu-cache.md
0472.concatenated-words	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/472.concatenated-words.md
0493.reverse-pairs	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/493.reverse-pairs.md
0895.maximum-frequency-stack	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/895.maximum-frequency-stack.md
1168.optimize-water-distribution-in-a-village	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/problems/1168.optimize-water-distribution-in-a-village-cn.md
	https://patch-diff.githubusercontent.com/Lid23/leetcode#数据结构与算法的总结
数据结构	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/basic-data-structure.md
基础算法	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/basic-algorithm.md
二叉树的遍历	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/binary-tree-traversal.md
动态规划	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/dynamic-programming.md
哈夫曼编码和游程编码	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/run-length-encode-and-huffman-encode.md
布隆过滤器	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/bloom-filter.md
字符串问题	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/string-problems.md
前缀树专题	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/trie.md
《日程安排》专题	https://lucifer.ren/blog/2020/02/03/leetcode-%E6%88%91%E7%9A%84%E6%97%A5%E7%A8%8B%E5%AE%89%E6%8E%92%E8%A1%A8%E7%B3%BB%E5%88%97/
《构造二叉树》专题	https://lucifer.ren/blog/2020/02/08/%E6%9E%84%E9%80%A0%E4%BA%8C%E5%8F%89%E6%A0%91%E4%B8%93%E9%A2%98/
《贪婪策略》专题	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/greedy.md
《深度优先遍历》专题	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/DFS.md
滑动窗口（思路 + 模板）	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/slide-window.md
位运算	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/bit.md
设计题	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/design.md
小岛问题	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/island.md
最大公约数	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/GCD.md
并查集	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/union-find.md
前缀和	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/thinkings/prefix.md
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anki 官网	https://apps.ankiweb.net/
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每日一题汇总	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/daily
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每日一题认领区	https://github.com/azl397985856/leetcode/projects/1
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anki 卡片完善	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/assets/anki
字符串类问题汇总	https://patch-diff.githubusercontent.com/Lid23/leetcode/blob/master/todo/str
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