LeetCode

#	Title	Tags
1	Two Sum	Array,Hash Table
2	Add Two Numbers	Linked List,Math
11	Container With Most Water	Array, Two Pointers
13	Roman to Integer	Math,String
15	3Sum	Array, Two Pointers
16	3Sum Closest	Array, Two Pointers
21	Merge Two Sorted Lists	Linked List
26	Remove Duplicates from Sorted Array	Array,Two Pointers
33	Search in Rotated Sorted Array	Array, Binary Search
34	Find First and Last Position of Element in Sorted Array	Array,Binary Search
62	Unique Paths	Array, Dynamic Programming
69	Sqrt(x)	Binary Search, Math
71	Simplify Path	String, Stack
94	Binary Tree Inorder Traversal	Hash Table, Stack, Tree
102	Binary Tree Level Order Traversal	Tree, Breadth-First Search, [Binary Tree][]
104	Maximum Depth of Binary Tree	Tree, Depth-First Search, Breadth-First Search, [Binary Tree][]
108	Convert Sorted Array to Binary Search Tree	Tree,Depth-first Search
112	Path Sum	Tree,Depth-first Search
118	Pascal's Triangle	Array
119	Pascal's Triangle II	Array
121	Best Time to Buy and Sell Stock	Array,Dynamic Programming
122	Best Time to Buy and Sell Stock II	Array,Greedy
125	Valid Palindrome	String,Two Pointers
144	Binary Tree Preorder Traversal	Stack, Tree
160	Intersection of Two Linked Lists	Linked List
167	Two Sum II - Input array is sorted	Array,Two Pointers,Binary Search
171	1-bit and 2-bit Characters	Array
189	Rotate Array	Array
190	Reverse Bits	Bit Manipulation
193	Valid Phone Numbers	Shell
195	Tenth Line	Shell
198	House Robber	Dynamic Programming
203	Remove Linked List Elements	Linked List
205	Isomorphic Strings	Hash Table
206	Reverse Linked List	Linked List
217	Contains Duplicate	Array,Hash Table
232	Implement Queue using Stacks	Stack,Design
234	Palindrome Linked List	Array,Two Pointers
242	Valid Anagram	Hash Table, Sort
268	Missing Number	Array,Math,Bit Manipulation
278	First Bad Version	Binary Search
283	Move Zeroes	Array,Two Pointers
303	Range Sum Query - Immutable	Dynamic Programming
322	Coin Change	Dynamic Programming
344	Reverse String	String,Two Pointers
392	Is Subsequence	Binary Search, Dynamic Programming, Greedy
400	Nth Digit	Math
412	Fizz Buzz
414	Third Maximum Number	Array
415	Add Strings	Math
434	Number of Segments in a String	String
443	String Compression	String
448	Find All Numbers Disappered in an Array	Array
455	Assign Cookies	Greedy
461	Hamming Distance	Bit Manipulation
463	Island Perimeter	Hash Table
476	Number Complement	Bit Manipulation
485	Max Consecutive Ones	Array
496	Next Greater Element I	Stack
500	Keyboard Row	Hash Table
507	Perfect Number	Math
509	Fibonacci Number	Array
520	Detect Capital	String
532	K-diff Pairs in an Array	Array,Two Pointers
541	Reverse String II	String
557	Reverse Words in a String III	String
559	Maximum Depth of N-ary Tree	Breadth-first Search,Depth-first Search,Tree
561	Array Partition I	Array
566	Reshape the Matrix	Array
575	Distribute Candies	Hash Table
581	Shortest Unsorted Continuous Subarray	Array
589	N-ary Tree Preorder Traversal	Tree
595	Big Countries	Database
605	Can Place Flowers	Array
617	Merge Two Binary Trees	Tree
620	Not Boring Movies	Database
628	Maximum Product of Three Numbers	Array,Math
633	Sum of Square Numbers	Math
643	Maximum Average Subarray I	Array
645	Set Mismatch	Math
657	Robot Return to Origin	String
665	Non-decreasing Array	Array
674	Longest Continuous Increasing Subsequence	Array
680	Valid Palindrome II	String
682	Baseball Game	Stack
696	Count Binary Substrings	String
700	Search in a Binary Search Tree	Tree
704	Binary.Search	Binary Search
705	Design HashSet	Hash Table, Design
707	Design Linked List	Array,Design
709	To Lower Case	String
724	Find Pivot Index	Array
728	Self Dividing Numbers	Math
744	Find Smallest Letter Greater Than Target	Binary Search
746	Min Cost Climbing Stairs	Array,Dynamic Programming
747	Largest Number At Least Twice of Other	Array
762	Prime Number of Set Bits in Binary Representation	Bit Manipulation
766	Toeplitz Matrix	Array
804	Unique Morse Code Words	String
806	Number of Lines To Write String	Array
811	Subdomain Visit Count	Hash Table
824	Goat Latin	String
832	Flipping an Image	Array
844	Backspace String Compare	Stack,Two Pointers
852	Peak Index in a Mountain Array	Binary Search
859	Buddy Strings	String
860	Lemonade Change	Greedy
867	Transpose Matrix	Array
872	Leaf-Similar Trees	Tree, Depth-first Search
876	Middle of the Linked List	Linked List
883	Projection Area of 3D Shapes	Math
888	Fair Candy Swap	Array
892	Surface Area of 3D Shapes	Geometry,Math
893	Groups of Special-Equivalent Strings	String
896	Monotonic Array	Array
897	Increasing Order Search Tree	Tree, Depth-first Search
908	Smallest Range I	Math
917	Reverse Only Letters	String
922	Sort Array By Parity II	Array,Sort
925	Long Pressed Name	String,Two Pointers
929	Unique Email Addresses	String
933	Number of Recent Calls	Queue
938	Range Sum of BST	Tree,Recursion
941	Valid Mountain Array	Array
942	DI String Match	Math
944	Delete Columns to Make Sorted	Greedy
961	N-Repeated Element in Size 2N Array	Hash Table
965	Univalued Binary Tree	Tree
977	Squares of a Sorted Array	Array,Two Pointers
985	Sum of Even Numbers After Queries	Array
999	Available Captures for Rook	Array
1002	Find Common Characters	Array,Hash Table
1005	Maximize Sum Of Array After K Negations	Greedy
1009	Complement of Base 10 Integer	Math
1021	Remove Outermost Parentheses	Stack
1022	Sum of Root To Leaf Binary Numbers	Tree
1025	Divisor Game	Math, Dynamic Programming
1030	Matrix Cells in Distance Order	Sort
1046	Last Stone Weight	[Heap][], Greedy
1047	Remove All Adjacent Duplicates In String	Stack
1051	Height Checker	Array
1078	Occurrences After Bigram	Hash Table
1103	Distribute Candies to People	Math
1108	Defanging an IP Address	String
1114	Print in Order
1122	Relative Sort Array	Array, Sort
1137	N-th Tribonacci Number	Math, Dynamic Programming, [Memoization][]
1160	Find Words That Can Be Formed by Characters	Array, Hash Table
1185	Day of the Week	Array
1200	Minimum Absolute Difference	Array
1207	Unique Number of Occurrences	Hash Table
1217	Play with Chips	Array, Math, Greedy
1221	Split a String in Balanced Strings	String, Greedy
1237	Find Positive Integer Solution for a Given Equation	Binary Search, Math
1252	Cells with Odd Values in a Matrix	Array
1260	Shift 2D Grid	Array
1266	Minimum Time Visiting All Points	Array, Geometry
1295	Find Numbers with Even Number of Digits	Array
1299	Replace Elements with Greatest Element on Right Side	Array
1304	Find N Unique Integers Sum up to Zero	Array
1309	Decrypt String from Alphabet to Integer Mapping	String
1313	Decompress Run-Length Encoded List	Array
1332	Remove Palindromic Subsequences	String
1337	The K Weakest Rows in a Matrix	Array, Binary Search
1346	Check If N and Its Double Exist	Array
1351	Count Negative Numbers in a Sorted Matrix	Array, Binary Search
1356	Sort Integers by The Number of 1 Bits	Bit Manipulation, Sort
1365	How Many Numbers Are Smaller Than the Current Number	Array, Hash Table
1370	Increasing Decreasing String	String, Sort
1374	Generate a String With Characters That Have Odd Counts	String
1380	Lucky Numbers in a Matrix	Array
1385	Find the Distance Value Between Two Arrays	Array
1389	Create Target Array in the Given Order	Array
1394	Find Lucky Integer in an Array	Array
1399	Count Largest Group	Array
1403	Minimum Subsequence in Non-Increasing Order	Greedy, Sort
1408	String Matching in an Array	String
1413	Minimum Value to Get Positive Step by Step Sum	Array
1431	Kids With the Greatest Number of Candies	Array
1436	Destination City	String
1441	Build an Array With Stack Operations	Stack
1450	Number of Students Doing Homework at a Given Time	Array
1460	Make Two Arrays Equal by Reversing Sub-arrays	Array
1464	Maximum Product of Two Elements in an Array	Array
1470	Shuffle the Array	Array
1475	Final Prices With a Special Discount in a Shop	Array
1480	Running Sum of 1d Array	Array
1491	Average Salary Excluding the Minimum and Maximum Salary	Array, Sort
1502	Can Make Arithmetic Progression From Sequence	Array, Sort
1512	Number of Good Pairs	Array, Hash Table, Math
1518	Water Bottles	Greedy
1550	Three Consecutive Odds	Array
1582	Special Positions in a Binary Matrix	Array
1598	Crawler Log Folder	Stack
1619	Mean of Array After Removing Some Elements	Array
1636	Sort Array by Increasing Frequency	Array, Sort
1641	Count Sorted Vowel Strings	Dynamic Programming
1652	Defuse the Bomb	Array
1694	Reformat Phone Number	String
1716	Calculate Money in Leetcode Bank	Math, Greedy
1779	Find Nearest Point That Has the Same X or Y Coordinate	Array

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