todo list

- [x] [Intersection of Two Linked Lists](https://oj.leetcode.com/problems/intersection-of-two-linked-lists)
- [ ] [Min Stack](https://oj.leetcode.com/problems/min-stack)
- [x] [Find Minimum in Rotated Sorted Array II](https://oj.leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii)
- [x] [Find Minimum in Rotated Sorted Array](https://oj.leetcode.com/problems/find-minimum-in-rotated-sorted-array)
- [x] [Maximum Product Subarray](https://oj.leetcode.com/problems/maximum-product-subarray)
- [ ] [Reverse Words in a String](https://oj.leetcode.com/problems/reverse-words-in-a-string)
- [ ] [Evaluate Reverse Polish Notation](https://oj.leetcode.com/problems/evaluate-reverse-polish-notation)
- [ ] [Max Points on a Line](https://oj.leetcode.com/problems/max-points-on-a-line)
- [x] [Sort List](https://oj.leetcode.com/problems/sort-list)
- [x] [Insertion Sort List](https://oj.leetcode.com/problems/insertion-sort-list)
- [ ] [LRU Cache](https://oj.leetcode.com/problems/lru-cache)
- [x] [Binary Tree Postorder Traversal](https://oj.leetcode.com/problems/binary-tree-postorder-traversal)
- [x] [Binary Tree Preorder Traversal](https://oj.leetcode.com/problems/binary-tree-preorder-traversal)
- [x] [Reorder List](https://oj.leetcode.com/problems/reorder-list)
- [x] [Linked List Cycle II](https://oj.leetcode.com/problems/linked-list-cycle-ii)
- [x] [Linked List Cycle](https://oj.leetcode.com/problems/linked-list-cycle)
- [x] [Word Break II](https://oj.leetcode.com/problems/word-break-ii)
- [x] [Word Break](https://oj.leetcode.com/problems/word-break)
- [x] [Copy List with Random Pointer](https://oj.leetcode.com/problems/copy-list-with-random-pointer)
- [ ] [Single Number II](https://oj.leetcode.com/problems/single-number-ii)
- [ ] [Single Number](https://oj.leetcode.com/problems/single-number)
- [x] [Candy](https://oj.leetcode.com/problems/candy)
- [x] [Gas Station](https://oj.leetcode.com/problems/gas-station)
- [ ] [Clone Graph](https://oj.leetcode.com/problems/clone-graph)
- [ ] [Palindrome Partitioning II](https://oj.leetcode.com/problems/palindrome-partitioning-ii)
- [ ] [Palindrome Partitioning](https://oj.leetcode.com/problems/palindrome-partitioning)
- [ ] [Surrounded Regions](https://oj.leetcode.com/problems/surrounded-regions)
- [ ] [Sum Root to Leaf Numbers](https://oj.leetcode.com/problems/sum-root-to-leaf-numbers)
- [ ] [Longest Consecutive Sequence](https://oj.leetcode.com/problems/longest-consecutive-sequence)
- [ ] [Word Ladder II](https://oj.leetcode.com/problems/word-ladder-ii)
- [ ] [Word Ladder](https://oj.leetcode.com/problems/word-ladder)
- [ ] [Valid Palindrome](https://oj.leetcode.com/problems/valid-palindrome)
- [ ] [Binary Tree Maximum Path Sum](https://oj.leetcode.com/problems/binary-tree-maximum-path-sum)
- [x] [Best Time to Buy and Sell Stock III](https://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock-iii)
- [x] [Best Time to Buy and Sell Stock II](https://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock-ii)
- [x] [Best Time to Buy and Sell Stock](https://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock)
- [x] [Triangle](https://oj.leetcode.com/problems/triangle)
- [x] [Pascal's Triangle II](https://oj.leetcode.com/problems/pascal's-triangle-ii)
- [x] [Pascal's Triangle](https://oj.leetcode.com/problems/pascal's-triangle)
- [x] [Populating Next Right Pointers in Each Node II](https://oj.leetcode.com/problems/populating-next-right-pointers-in-each-node-ii)
- [x] [Populating Next Right Pointers in Each Node](https://oj.leetcode.com/problems/populating-next-right-pointers-in-each-node)
- [ ] [Distinct Subsequences](https://oj.leetcode.com/problems/distinct-subsequences)
- [x] [Flatten Binary Tree to Linked List](https://oj.leetcode.com/problems/flatten-binary-tree-to-linked-list)
- [x] [Path Sum II](https://oj.leetcode.com/problems/path-sum-ii)
- [x] [Path Sum](https://oj.leetcode.com/problems/path-sum)
- [x] [Minimum Depth of Binary Tree](https://oj.leetcode.com/problems/minimum-depth-of-binary-tree)
- [x] [Balanced Binary Tree](https://oj.leetcode.com/problems/balanced-binary-tree)
- [x] [Convert Sorted List to Binary Search Tree](https://oj.leetcode.com/problems/convert-sorted-list-to-binary-search-tree)
- [x] [Convert Sorted Array to Binary Search Tree](https://oj.leetcode.com/problems/convert-sorted-array-to-binary-search-tree)
- [x] [Binary Tree Level Order Traversal II](https://oj.leetcode.com/problems/binary-tree-level-order-traversal-ii)
- [x] [Construct Binary Tree from Inorder and Postorder Traversal](https://oj.leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal)
- [x] [Construct Binary Tree from Preorder and Inorder Traversal](https://oj.leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal)
- [x] [Maximum Depth of Binary Tree](https://oj.leetcode.com/problems/maximum-depth-of-binary-tree)
- [x] [Binary Tree Zigzag Level Order Traversal](https://oj.leetcode.com/problems/binary-tree-zigzag-level-order-traversal)
- [x] [Binary Tree Level Order Traversal](https://oj.leetcode.com/problems/binary-tree-level-order-traversal)
- [x] [Symmetric Tree](https://oj.leetcode.com/problems/symmetric-tree)
- [x] [Same Tree](https://oj.leetcode.com/problems/same-tree)
- [x] [Recover Binary Search Tree](https://oj.leetcode.com/problems/recover-binary-search-tree)
- [x] [Validate Binary Search Tree](https://oj.leetcode.com/problems/validate-binary-search-tree)
- [ ] [Interleaving String](https://oj.leetcode.com/problems/interleaving-string)
- [x] [Unique Binary Search Trees II](https://oj.leetcode.com/problems/unique-binary-search-trees-ii)
- [x] [Unique Binary Search Trees](https://oj.leetcode.com/problems/unique-binary-search-trees)
- [x] [Binary Tree Inorder Traversal](https://oj.leetcode.com/problems/binary-tree-inorder-traversal)
- [ ] [Restore IP Addresses](https://oj.leetcode.com/problems/restore-ip-addresses)
- [ ] [Reverse Linked List II](https://oj.leetcode.com/problems/reverse-linked-list-ii)
- [x] [Subsets II](https://oj.leetcode.com/problems/subsets-ii)
- [ ] [Decode Ways](https://oj.leetcode.com/problems/decode-ways)
- [ ] [Gray Code](https://oj.leetcode.com/problems/gray-code)
- [ ] [Merge Sorted Array](https://oj.leetcode.com/problems/merge-sorted-array)
- [ ] [Scramble String](https://oj.leetcode.com/problems/scramble-string)
- [x] [Partition List](https://oj.leetcode.com/problems/partition-list)
- [x] [Maximal Rectangle](https://oj.leetcode.com/problems/maximal-rectangle)
- [x] [Largest Rectangle in Histogram](https://oj.leetcode.com/problems/largest-rectangle-in-histogram)
- [x] [Remove Duplicates from Sorted List II](https://oj.leetcode.com/problems/remove-duplicates-from-sorted-list-ii)
- [x] [Remove Duplicates from Sorted List](https://oj.leetcode.com/problems/remove-duplicates-from-sorted-list)
- [ ] [Search in Rotated Sorted Array II](https://oj.leetcode.com/problems/search-in-rotated-sorted-array-ii)
- [x] [Remove Duplicates from Sorted Array II](https://oj.leetcode.com/problems/remove-duplicates-from-sorted-array-ii)
- [ ] [Word Search](https://oj.leetcode.com/problems/word-search)
- [x] [Subsets](https://oj.leetcode.com/problems/subsets)
- [x] [Combinations](https://oj.leetcode.com/problems/combinations)
- [ ] [Minimum Window Substring](https://oj.leetcode.com/problems/minimum-window-substring)
- [ ] [Sort Colors](https://oj.leetcode.com/problems/sort-colors)
- [x] [Search a 2D Matrix](https://oj.leetcode.com/problems/search-a-2d-matrix)
- [ ] [Set Matrix Zeroes](https://oj.leetcode.com/problems/set-matrix-zeroes)
- [ ] [Edit Distance](https://oj.leetcode.com/problems/edit-distance)
- [ ] [Simplify Path](https://oj.leetcode.com/problems/simplify-path)
- [x] [Climbing Stairs](https://oj.leetcode.com/problems/climbing-stairs)
- [ ] [Sqrt(x)](https://oj.leetcode.com/problems/sqrt%28x%29)
- [ ] [Text Justification](https://oj.leetcode.com/problems/text-justification)
- [x] [Plus One](https://oj.leetcode.com/problems/plus-one)
- [ ] [Valid Number](https://oj.leetcode.com/problems/valid-number)
- [x] [Add Binary](https://oj.leetcode.com/problems/add-binary)
- [x] [Merge Two Sorted Lists](https://oj.leetcode.com/problems/merge-two-sorted-lists)
- [ ] [Minimum Path Sum](https://oj.leetcode.com/problems/minimum-path-sum)
- [x] [Unique Paths II](https://oj.leetcode.com/problems/unique-paths-ii)
- [x] [Unique Paths](https://oj.leetcode.com/problems/unique-paths)
- [x] [Rotate List](https://oj.leetcode.com/problems/rotate-list)
- [ ] [Permutation Sequence](https://oj.leetcode.com/problems/permutation-sequence)
- [ ] [Spiral Matrix II](https://oj.leetcode.com/problems/spiral-matrix-ii)
- [ ] [Length of Last Word](https://oj.leetcode.com/problems/length-of-last-word)
- [ ] [Insert Interval](https://oj.leetcode.com/problems/insert-interval)
- [ ] [Merge Intervals](https://oj.leetcode.com/problems/merge-intervals)
- [x] [Jump Game](https://oj.leetcode.com/problems/jump-game)
- [ ] [Spiral Matrix](https://oj.leetcode.com/problems/spiral-matrix)
- [ ] [Maximum Subarray](https://oj.leetcode.com/problems/maximum-subarray)
- [ ] [N-Queens II](https://oj.leetcode.com/problems/n-queens-ii)
- [ ] [N-Queens](https://oj.leetcode.com/problems/n-queens)
- [ ] [Pow(x, n)](https://oj.leetcode.com/problems/pow%28x,-n%29)
- [ ] [Anagrams](https://oj.leetcode.com/problems/anagrams)
- [ ] [Rotate Image](https://oj.leetcode.com/problems/rotate-image)
- [x] [Permutations II](https://oj.leetcode.com/problems/permutations-ii)
- [x] [Permutations](https://oj.leetcode.com/problems/permutations)
- [x] [Jump Game II](https://oj.leetcode.com/problems/jump-game-ii)
- [ ] [Wildcard Matching](https://oj.leetcode.com/problems/wildcard-matching)
- [ ] [Multiply Strings](https://oj.leetcode.com/problems/multiply-strings)
- [ ] [Trapping Rain Water](https://oj.leetcode.com/problems/trapping-rain-water)
- [ ] [First Missing Positive](https://oj.leetcode.com/problems/first-missing-positive)
- [x] [Combination Sum II](https://oj.leetcode.com/problems/combination-sum-ii)
- [x] [Combination Sum](https://oj.leetcode.com/problems/combination-sum)
- [ ] [Count and Say](https://oj.leetcode.com/problems/count-and-say)
- [ ] [Sudoku Solver](https://oj.leetcode.com/problems/sudoku-solver)
- [ ] [Valid Sudoku](https://oj.leetcode.com/problems/valid-sudoku)
- [x] [Search Insert Position](https://oj.leetcode.com/problems/search-insert-position)
- [x] [Search for a Range](https://oj.leetcode.com/problems/search-for-a-range)
- [ ] [Search in Rotated Sorted Array](https://oj.leetcode.com/problems/search-in-rotated-sorted-array)
- [ ] [Longest Valid Parentheses](https://oj.leetcode.com/problems/longest-valid-parentheses)
- [ ] [Next Permutation](https://oj.leetcode.com/problems/next-permutation)
- [ ] [Substring with Concatenation of All Words](https://oj.leetcode.com/problems/substring-with-concatenation-of-all-words)
- [ ] [Divide Two Integers](https://oj.leetcode.com/problems/divide-two-integers)
- [ ] [Implement strStr()](https://oj.leetcode.com/problems/implement-strstr%28%29)
- [x] [Remove Element](https://oj.leetcode.com/problems/remove-element)
- [x] [Remove Duplicates from Sorted Array](https://oj.leetcode.com/problems/remove-duplicates-from-sorted-array)
- [ ] [Reverse Nodes in k-Group](https://oj.leetcode.com/problems/reverse-nodes-in-k-group)
- [x] [Swap Nodes in Pairs](https://oj.leetcode.com/problems/swap-nodes-in-pairs)
- [x] [Merge k Sorted Lists](https://oj.leetcode.com/problems/merge-k-sorted-lists)
- [ ] [Generate Parentheses](https://oj.leetcode.com/problems/generate-parentheses)
- [ ] [Valid Parentheses](https://oj.leetcode.com/problems/valid-parentheses)
- [ ] [Remove Nth Node From End of List](https://oj.leetcode.com/problems/remove-nth-node-from-end-of-list)
- [x] [Letter Combinations of a Phone Number](https://oj.leetcode.com/problems/letter-combinations-of-a-phone-number)
- [x] [4Sum](https://oj.leetcode.com/problems/4sum)
- [x] [3Sum Closest](https://oj.leetcode.com/problems/3sum-closest)
- [x] [3Sum](https://oj.leetcode.com/problems/3sum)
- [ ] [Longest Common Prefix](https://oj.leetcode.com/problems/longest-common-prefix)
- [ ] [Roman to Integer](https://oj.leetcode.com/problems/roman-to-integer)
- [ ] [Integer to Roman](https://oj.leetcode.com/problems/integer-to-roman)
- [ ] [Container With Most Water](https://oj.leetcode.com/problems/container-with-most-water)
- [ ] [Regular Expression Matching](https://oj.leetcode.com/problems/regular-expression-matching)
- [x] [Palindrome Number](https://oj.leetcode.com/problems/palindrome-number)
- [ ] [String to Integer (atoi)](https://oj.leetcode.com/problems/string-to-integer-%28atoi%29)
- [x] [Find Peak Element](https://oj.leetcode.com/problems/find-peak-element)
- [x] [Reverse Integer](https://oj.leetcode.com/problems/reverse-integer)
- [ ] [ZigZag Conversion](https://oj.leetcode.com/problems/zigzag-conversion)
- [ ] [Longest Palindromic Substring](https://oj.leetcode.com/problems/longest-palindromic-substring)
- [x] [Add Two Numbers](https://oj.leetcode.com/problems/add-two-numbers)
- [ ] [Longest Substring Without Repeating Characters](https://oj.leetcode.com/problems/longest-substring-without-repeating-characters)
- [ ] [Median of Two Sorted Arrays](https://oj.leetcode.com/problems/median-of-two-sorted-arrays)
- [x] [Two Sum](https://oj.leetcode.com/problems/two-sum)


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todo list #1

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