LeetCode

I have solved 174 / 187 problems before 2015/4/23.

Word Ladder II
Implement strStr()
Dungeon Game
Best Time to Buy and Sell Stock IV

Title	Language	Tag
Word Break	Java	`DP`
Word Break II	Java	`DP` `Backtracking`
Search for a Range	Java	`BinarySearch`
Longest Valid Parentheses	Java	`Greedy`
Candy	Java	`Greedy`
Gas Station	Java	`Greedy`
Clone Graph	Java	`Hash` `DFS`
Surrounded Regions	Java	`BFS`
Sum Root to Leaf Numbers	Java	`DFS`
Longest Consecutive Sequence	Java	`Array`
Palindrome Partitioning	Java	`Backtracking`
Palindrome Partitioning II	Java	`DP`
Longest Palindromic Substring	Java	`DP`
Word Ladder	Java	`BFS` `Hash` `Dijstra`
Word Ladder II	Java	`BFS`
Binary Tree Maximum Path Sum	Java	`DFS`
Best Time to Buy and Sell Stock	Java	`Array`
Best Time to Buy and Sell Stock II	Java	`Greedy`
Best Time to Buy and Sell Stock III	Java	`DP`
Triangle	Java	`DP`
Pascal's Triangle	Java	`Array`
Pascal's Triangle II	Java	`Array` `Math`
Populating Next Right Pointers in Each Node	Java	`Queue`
Populating Next Right Pointers in Each Node II	Java	`Queue`
Distinct Subsequences	Java	`DP`
Flatten Binary Tree to Linked List	Java	`DFS`
Path Sum	Java	`DFS`
Path Sum II	Java	`DFS`
Minimum Depth of Binary Tree	Java	`BFS`
Maximum Depth of Binary Tree	Java	`BFS`
Balanced Binary Tree	Java	`BFS`
Convert Sorted Array to Binary Search Tree	Java	`BST`
Convert Sorted List to Binary Search Tree	Java	`BST`
Binary Tree Level Order Traversal	Java	`BFS`
Binary Tree Level Order Traversal II	Java	`BFS`
Binary Tree Zigzag Level Order Traversal	Java	`BFS`
Construct Binary Tree from Inorder and Postorder Traversal	Java	`DFS`
Construct Binary Tree from Preorder and Inorder Traversal	Java	`DFS`
Symmetric Tree	Java	`DFS`
Same Tree	Java	`DFS`
Validate Binary Search Tree	Java	`DFS` `BST`
Recover Binary Search Tree	Java	`DFS` `BST`
Insert Interval	Java	`Array`
Restore IP Addresses	Java	`Backtracking`
Reverse Nodes in k-Group	Java	`List`
Interleaving String	Java	`DP`
Unique Binary Search Trees	Java	`Math`
Unique Binary Search Trees II	Java	`DFS`
Reverse Linked List II	Java	`Linked List`
Binary Tree Inorder Traversal	Java	`DFS`
Subsets	Java	`Bit`
Subsets II	Java	`Bit`
Decode Ways	Java	`DP`
Gray Code	Java	`Backtracing`
Merge Sorted Array	Java	`Two Pointers`
Partition List	Java	`LinkedList`
Min Stack	Java	`Stack`
Remove Duplicates from Sorted List	Java	`LinkedList`
Remove Duplicates from Sorted List II	Java	`LinkedList`
Remove Duplicates from Sorted Array	Java	`Array`
Remove Duplicates from Sorted Array II	Java	`Array`
Scramble String	Java	`DFS` `DP`
Combinations	Java	`DFS`
Word Search	Java	`DFS`
Sort Colors	Java	`Hash`
Search in Rotated Sorted Array	Java	`Binary Search`
Search in Rotated Sorted Array II	Java	`Binary Search`
Largest Rectangle in Histogram	Java	`Stack`
Maximal Rectangle	Java	`Stack`
Minimum Window Substring	Java	`String`
Search a 2D Matrix	Java	`Array`
Set Matrix Zeroes	Java	`Array`
Edit Distance	Java	`DP`
Simplify Path	Java	`Stack`
Climbing Stairs	Java	`Math`
Sqrt(x)	Java	`Binary Search`
Text Justification	Java	`Greedy`
Plus One	Java	`Math`
Valid Number	Java	`Math` `String`
Add Binary	Java	`Math` `String`
Merge Two Sorted Lists	Java	`LinkedList`
Minimum Path Sum	Java	`DP`
Unique Paths	Java	`Math` `DP`
Unique Paths II	Java	`DP`
Rotate List	Java	`LinkedList`
Permutations	Java	`Backtracking`
Permutations II	Java	`Backtracking` `Hash`
Next Permutation	Java	`Math`
Permutation Sequence	Java	`Math`
Spiral Matrix	Java	`Array`
Spiral Matrix II	Java	`Array`
Length of Last Word	Java	`String`
Merge Intervals	Java	`Greedy`
Jump Game	Java	`Greedy`
N-Queens	Java	`Backtracking`
N-Queens II	Java	`Backtracking`
Pow(x, n)	Java	`Bit`
Rotate Image	Java	`Array`
Anagrams	Java	`Hash`
Jump Game II	Java	`GreedyK`
Multiply Strings	Java	`String`
Combination Sum	Java	`Backtracking`
Combination Sum II	Java	`Backtracking`
Count and Say	Java	`String`
Valid Sudoku	Java	`Hash`
Sudoku Solver	Java	`Backtracking`
Search Insert Position	Java	`Binary Search`
Divide Two Integers	Java	`Binary`
ZigZag Conversion	Java	`String`
Reverse Integer	Java	`Math`
String to Integer (atoi)	Java	`Math`
Palindrome Number	Java	`Math`
Container With Most Water	Java	`TwoPointers`
Trapping Rain Water	Java	`TwoPointers`
Linked List Cycle	Java	`LinkedList`
Linked List Cycle II	Java	`LinkedList`
Intersection of Two Linked Lists	Java	`LinkedList`
Longest Common Prefix	Java	`String`
Two Sum	Java	`TwoPointers`
3Sum	Java	`Sort` `TwoPointers`
3Sum Closest	Java	`Sort` `TwoPointers`
4Sum	Java	`Sort` `TwoPointers`
Letter Combinations of a Phone Number	Java	`Backtracking`
Remove Nth Node From End of List	Java	`TwoPointers`
Implement strStr()	Java	`String`
Remove Element	Java	`TwoPointers`
Swap Nodes in Pairs	Java	`LinkedList`
Valid Parentheses	Java	`Stack`
Generate Parentheses	Java	`Backtracking`
Merge k Sorted Lists	Java	`Heap`
First Missing Positive	Java	`Array`
Integer to Roman	Java	`Math`
Roman to Integer	Java	`Math`
Substring with Concatenation of All Words	Java	`Hash`
Regular Expression Matching	Java	`Backtracking`
Wildcard Matching	Java	`String`
Find Peak Element	Java	`Array`
Maximum Gap	Java	`Sort`
Compare Version Numbers	Java	`String`
Fraction to Recurring Decimal	Java	`Hash`
Excel Sheet Column Title	Java	`Math`
Majority Element	Java	`Array`
Excel Sheet Column Number	Java	`Array`
Factorial Trailing Zeroes	Java	`Math`
Maximum Product Subarray	Java	`DP`
Largest Number	Java	`Sort`
Reorder List	Java	`LinkedList`
Binary Search Tree Iterator	Java	`Stack`
Rotate Array	Java	`Array`
Reverse Bits	Java	`Bit`
Number of 1 Bits	Java	`Bit`
House Robber	Java	`DP`
Binary Tree Right Side View	Java	`Queue`
Number of Islands	Java	`DFS`
Bitwise AND of Numbers Range	Java	`Bit`
Happy Number	Java	`Hash`
Remove Linked List Elements	Java	`LinkedList`
Longest Substring Without Repeating Characters	Java	`Hash` `Two Pointers`

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