README.md

365 Solved - 💚 Easy 147 💛 Medium 196 ❤️ Hard 22

	#	Title	Solution	Difficulty
✅	1	Two Sum	Solution.swift	💚 Easy
✅	2	Add Two Numbers	Solution.swift	💛 Medium
✅	3	Longest Substring Without Repeating Characters	Solution.swift	💛 Medium
	4	Median of Two Sorted Arrays		❤️ Hard
✅	5	Longest Palindromic Substring	Solution.swift	💛 Medium
✅	6	ZigZag Conversion	Solution.swift	💛 Medium
✅	7	Reverse Integer	Solution.swift	💚 Easy
	8	String to Integer (atoi)		💛 Medium
✅	9	Palindrome Number	Solution.swift	💚 Easy
	10	Regular Expression Matching		❤️ Hard
✅	11	Container With Most Water	Solution.swift	💛 Medium
✅	12	Integer to Roman	Solution.swift	💛 Medium
✅	13	Roman to Integer	Solution.swift	💚 Easy
✅	14	Longest Common Prefix	Solution.swift	💚 Easy
✅	15	3Sum	Solution.swift	💛 Medium
✅	16	3Sum Closest	Solution.swift	💛 Medium
✅	17	Letter Combinations of a Phone Number	Solution.swift	💛 Medium
	18	4Sum		💛 Medium
✅	19	Remove Nth Node From End of List	Solution.swift	💛 Medium
✅	20	Valid Parentheses	Solution.swift	💚 Easy
✅	21	Merge Two Sorted Lists	Solution.swift	💚 Easy
✅	22	Generate Parentheses	Solution.swift	💛 Medium
✅	23	Merge k Sorted Lists	Solution.swift	❤️ Hard
✅	24	Swap Nodes in Pairs	Solution.swift	💛 Medium
	25	Reverse Nodes in k-Group		❤️ Hard
✅	26	Remove Duplicates from Sorted Array	Solution.swift	💚 Easy
✅	27	Remove Element	Solution.swift	💚 Easy
	28	Implement strStr()		💚 Easy
	29	Divide Two Integers		💛 Medium
	30	Substring with Concatenation of All Words		❤️ Hard
✅	31	Next Permutation	Solution.swift	💛 Medium
	32	Longest Valid Parentheses		❤️ Hard
✅	33	Search in Rotated Sorted Array	Solution.swift	💛 Medium
	34	Find First and Last Position of Element in Sorted Array		💛 Medium
✅	35	Search Insert Position	Solution.swift	💚 Easy
	36	Valid Sudoku		💛 Medium
✅	39	Combination Sum	Solution.swift	💛 Medium
✅	41	First Missing Positive	Solution.swift	❤️ Hard
✅	47	Permutations II	Solution.swift	💛 Medium
✅	50	Pow(x, n)	Solution.swift	💛 Medium
✅	55	Jump Game	Solution.swift	💛 Medium
✅	56	Merge Intervals	Solution.swift	💛 Medium
✅	57	Insert Interval	Solution.swift	❤️ Hard
✅	58	Length of Last Word	Solution.swift	💚 Easy
✅	59	Spiral Matrix II	Solution.swift	💛 Medium
✅	61	Rotate List	Solution.swift	💛 Medium
✅	62	Unique Paths	Solution.swift	💛 Medium
✅	64	Minimum Path Sum	Solution.swift	💛 Medium
✅	66	Plus One	Solution.swift	💚 Easy
✅	67	Add Binary	Solution.swift	💚 Easy
✅	70	Climbing Stairs	Solution.swift	💚 Easy
✅	71	Simplify Path	Solution.swift	💛 Medium
✅	74	Search a 2D Matrix	Solution.swift	💛 Medium
✅	75	Sort Colors	Solution.swift	💛 Medium
✅	79	Word Search	Solution.swift	💛 Medium
✅	80	Remove Duplicates from Sorted Array II	Solution.swift	💛 Medium
✅	81	Search in Rotated Sorted Array II	Solution.swift	💛 Medium
✅	82	Remove Duplicates from Sorted List II	Solution.swift	💛 Medium
✅	83	Remove Duplicates from Sorted List	Solution.swift	💚 Easy
✅	84	Largest Rectangle in Histogram	Solution.swift	❤️ Hard
✅	88	Merge Sorted Array	Solution.swift	💚 Easy
✅	91	Decode Ways	Solution.swift	💛 Medium
✅	94	Binary Tree Inorder Traversal	Solution.swift	💛 Medium
✅	98	Validate Binary Search Tree	Solution.swift	💛 Medium
✅	99	Recover Binary Search Tree	Solution.swift	❤️ Hard
✅	100	Same Tree	Solution.swift	💚 Easy
✅	101	Symmetric Tree	Solution.swift	💚 Easy
✅	103	Binary Tree Zigzag Level Order Traversal	Solution.swift	💛 Medium
✅	104	Maximum Depth of Binary Tree	Solution.swift	💚 Easy
✅	107	Binary Tree Level Order Traversal II	Solution.swift	💚 Easy
✅	108	Convert Sorted Array to Binary Search Tree	Solution.swift	💚 Easy
✅	110	Balanced Binary Tree	Solution.swift	💚 Easy
✅	111	Minimum Depth of Binary Tree	Solution.swift	💚 Easy
✅	116	Populating Next Right Pointers in Each Node	Solution.swift	💛 Medium
✅	117	Populating Next Right Pointers in Each Node II	Solution.swift	💛 Medium
✅	118	Pascal's Triangle	Solution.swift	💚 Easy
✅	119	Pascal's Triangle II	Solution.swift	💚 Easy
✅	121	Best Time to Buy and Sell Stock	Solution.swift	💚 Easy
✅	122	Best Time to Buy and Sell Stock II	Solution.swift	💚 Easy
✅	123	Best Time to Buy and Sell Stock III	Solution.swift	❤️ Hard
✅	124	Binary Tree Maximum Path Sum	Solution.swift	❤️ Hard
✅	125	Valid Palindrome	Solution.swift	💚 Easy
✅	129	Sum Root to Leaf Numbers	Solution.swift	💛 Medium
✅	131	Palindrome Partitioning	Solution.swift	💛 Medium
✅	133	Clone Graph	Solution.swift	💛 Medium
✅	134	Gas Station	Solution.swift	💛 Medium
✅	136	Single Number	Solution.swift	💚 Easy
✅	138	Copy List with Random Pointer	Solution.swift	💛 Medium
✅	139	Word Break	Solution.swift	💛 Medium
✅	140	Word Break II	Solution.swift	❤️ Hard
✅	141	Linked List Cycle	Solution.swift	💚 Easy
✅	142	Linked List Cycle II	Solution.swift	💛 Medium
✅	143	Reorder List	Solution.swift	💛 Medium
✅	147	Insertion Sort List	Solution.swift	💛 Medium
✅	148	Sort List	Solution.swift	💛 Medium
✅	150	Evaluate Reverse Polish Notation	Solution.swift	💛 Medium
✅	151	Reverse Words in a String	Solution.swift	💛 Medium
✅	152	Maximum Product Subarray	Solution.swift	💛 Medium
✅	154	Find Minimum in Rotated Sorted Array II	Solution.swift	❤️ Hard
✅	155	Min Stack	Solution.swift	💚 Easy
✅	156	Binary Tree Upside Down 🔐	Solution.swift	💛 Medium
✅	157	Read N Characters Given Read4 🔐	Solution.swift	💚 Easy
✅	159	Longest Substring with At Most Two Distinct Characters 🔐	Solution.swift	💛 Medium
✅	160	Intersection of Two Linked Lists	Solution.swift	💚 Easy
✅	161	One Edit Distance 🔐	Solution.swift	💛 Medium
✅	163	Missing Ranges 🔐	Solution.swift	💚 Easy
✅	165	Compare Version Numbers	Solution.swift	💛 Medium
✅	167	Two Sum II - Input array is sorted	Solution.swift	💚 Easy
✅	169	Majority Element	Solution.swift	💚 Easy
✅	170	Two Sum III - Data structure design 🔐	Solution.swift	💚 Easy
✅	171	Excel Sheet Column Number	Solution.swift	💚 Easy
✅	173	Binary Search Tree Iterator	Solution.swift	💛 Medium
✅	174	Dungeon Game	Solution.swift	❤️ Hard
✅	179	Largest Number	Solution.swift	💛 Medium
✅	186	Reverse Words in a String II 🔐	Solution.swift	💛 Medium
✅	187	Repeated DNA Sequences	Solution.swift	💛 Medium
✅	188	Best Time to Buy and Sell Stock IV	Solution.swift	❤️ Hard
✅	189	Rotate Array	Solution.swift	💛 Medium
✅	191	Number of 1 Bits	Solution.swift	💚 Easy
✅	198	House Robber	Solution.swift	💚 Easy
✅	199	Binary Tree Right Side View	Solution.swift	💛 Medium
✅	202	Happy Number	Solution.swift	💚 Easy
✅	203	Remove Linked List Elements	Solution.swift	💚 Easy
✅	208	Implement Trie (Prefix Tree)	Solution.swift	💛 Medium
✅	209	Minimum Size Subarray Sum	Solution.swift	💛 Medium
✅	210	Course Schedule II	Solution.swift	💛 Medium
✅	211	Add and Search Word - Data structure design	Solution.swift	💛 Medium
✅	213	House Robber II	Solution.swift	💛 Medium
✅	215	Kth Largest Element in an Array	Solution.swift	💛 Medium
✅	216	Combination Sum III	Solution.swift	💛 Medium
✅	217	Contains Duplicate	Solution.swift	💚 Easy
✅	219	Contains Duplicate II	Solution.swift	💚 Easy
✅	220	Contains Duplicate III	Solution.swift	💛 Medium
✅	222	Count Complete Tree Nodes	Solution.swift	💛 Medium
✅	225	Implement Stack using Queues	Solution.swift	💚 Easy
✅	226	Invert Binary Tree	Solution.swift	💚 Easy
✅	227	Basic Calculator II	Solution.swift	💛 Medium
✅	228	Summary Ranges	Solution.swift	💚 Easy
✅	229	Majority Element II	Solution.swift	💛 Medium
✅	231	Power of Two	Solution.swift	💚 Easy
✅	232	Implement Queue using Stacks	Solution.swift	💚 Easy
✅	237	Delete Node in a Linked List	Solution.swift	💚 Easy
✅	239	Sliding Window Maximum	Solution.swift	❤️ Hard
✅	242	Valid Anagram	Solution.swift	💚 Easy
✅	243	Shortest Word Distance 🔐	Solution.swift	💚 Easy
✅	246	Strobogrammatic Number 🔐	Solution.swift	💚 Easy
✅	252	Meeting Rooms 🔐	Solution.swift	💚 Easy
✅	253	Meeting Rooms II 🔐	Solution.swift	💛 Medium
✅	257	Binary Tree Paths	Solution.swift	💚 Easy
✅	258	Add Digits	Solution.swift	💚 Easy
✅	260	Single Number III	Solution.swift	💛 Medium
✅	264	Ugly Number II	Solution.swift	💛 Medium
✅	266	Palindrome Permutation 🔐	Solution.swift	💚 Easy
✅	268	Missing Number	Solution.swift	💚 Easy
✅	270	Closest Binary Search Tree Value 🔐	Solution.swift	💚 Easy
✅	274	H-Index	Solution.swift	💛 Medium
✅	276	Paint Fence 🔐	Solution.swift	💚 Easy
✅	278	First Bad Version	Solution.swift	💚 Easy
✅	283	Move Zeroes	Solution.swift	💚 Easy
✅	284	Peeking Iterator	Solution.swift	💛 Medium
✅	287	Find the Duplicate Number	Solution.swift	💛 Medium
✅	289	Game of Life	Solution.swift	💛 Medium
✅	290	Word Pattern	Solution.swift	💚 Easy
✅	292	Nim Game	Solution.swift	💚 Easy
✅	293	Flip Game 🔐	Solution.swift	💚 Easy
✅	299	Bulls and Cows	Solution.swift	💚 Easy
✅	309	Best Time to Buy and Sell Stock with Cooldown	Solution.swift	💛 Medium
✅	310	Minimum Height Trees	Solution.swift	💛 Medium
✅	312	Burst Balloons	Solution.swift	❤️ Hard
✅	316	Remove Duplicate Letters	Solution.swift	💛 Medium
✅	322	Coin Change	Solution.swift	💛 Medium
✅	334	Increasing Triplet Subsequence	Solution.swift	💛 Medium
✅	337	House Robber III	Solution.swift	💛 Medium
✅	339	Nested List Weight Sum 🔐	Solution.swift	💚 Easy
✅	340	Longest Substring with At Most K Distinct Characters 🔐	Solution.swift	💛 Medium
✅	342	Power of Four	Solution.swift	💚 Easy
✅	344	Reverse String	Solution.swift	💚 Easy
✅	346	Moving Average from Data Stream 🔐	Solution.swift	💚 Easy
✅	348	Design Tic-Tac-Toe 🔐	Solution.swift	💛 Medium
✅	349	Intersection of Two Arrays	Solution.swift	💚 Easy
✅	350	Intersection of Two Arrays II	Solution.swift	💚 Easy
✅	359	Logger Rate Limiter 🔐	Solution.swift	💚 Easy
✅	367	Valid Perfect Square	Solution.swift	💚 Easy
✅	369	Plus One Linked List 🔐	Solution.swift	💛 Medium
✅	376	Wiggle Subsequence	Solution.swift	💛 Medium
✅	380	Insert Delete GetRandom O(1)	Solution.swift	💛 Medium
✅	382	Linked List Random Node	Solution.swift	💛 Medium
✅	383	Ransom Note	Solution.swift	💚 Easy
✅	387	First Unique Character in a String	Solution.swift	💚 Easy
✅	389	Find the Difference	Solution.swift	💚 Easy
✅	392	Is Subsequence	Solution.swift	💚 Easy
✅	394	Decode String	Solution.swift	💛 Medium
✅	395	Longest Substring with At Least K Repeating Characters	Solution.swift	💛 Medium
✅	399	Evaluate Division	Solution.swift	💛 Medium
✅	404	Sum of Left Leaves	Solution.swift	💚 Easy
✅	408	Valid Word Abbreviation 🔐	Solution.swift	💚 Easy
✅	409	Longest Palindrome	Solution.swift	💚 Easy
✅	412	Fizz Buzz	Solution.swift	💚 Easy
✅	413	Arithmetic Slices	Solution.swift	💛 Medium
✅	414	Third Maximum Number	Solution.swift	💚 Easy
✅	416	Partition Equal Subset Sum	Solution.swift	💛 Medium
✅	417	Pacific Atlantic Water Flow	Solution.swift	💛 Medium
✅	421	Maximum XOR of Two Numbers in an Array	Solution.swift	💛 Medium
✅	422	Valid Word Square 🔐	Solution.swift	💚 Easy
✅	430	Flatten a Multilevel Doubly Linked List	Solution.swift	💛 Medium
✅	435	Non-overlapping Intervals	Solution.swift	💛 Medium
✅	436	Find Right Interval	Solution.swift	💛 Medium
✅	437	Path Sum III	Solution.swift	💛 Medium
✅	441	Arranging Coins	Solution.swift	💚 Easy
✅	442	Find All Duplicates in an Array	Solution.swift	💛 Medium
✅	445	Add Two Numbers II	Solution.swift	💛 Medium
✅	449	Serialize and Deserialize BST	Solution.swift	💛 Medium
✅	450	Delete Node in a BST	Solution.swift	💛 Medium
✅	452	Minimum Number of Arrows to Burst Balloons	Solution.swift	💛 Medium
✅	454	4Sum II	Solution.swift	💛 Medium
✅	456	132 Pattern	Solution.swift	💛 Medium
✅	458	Poor Pigs	Solution.swift	❤️ Hard
✅	459	Repeated Substring Pattern	Solution.swift	💚 Easy
✅	461	Hamming Distance	Solution.swift	💚 Easy
✅	463	Island Perimeter	Solution.swift	💚 Easy
✅	470	Implement Rand10() Using Rand7()	Solution.swift	💛 Medium
✅	476	Number Complement	Solution.swift	💚 Easy
✅	478	Generate Random Point in a Circle	Solution.swift	💛 Medium
✅	484	Find Permutation 🔐	Solution.swift	💛 Medium
✅	485	Max Consecutive Ones	Solution.swift	💚 Easy
✅	487	Max Consecutive Ones II 🔐	Solution.swift	💛 Medium
✅	489	Robot Room Cleaner 🔐	Solution.swift	❤️ Hard
✅	490	The Maze 🔐	Solution.swift	💛 Medium
✅	495	Teemo Attacking	Solution.swift	💛 Medium
✅	497	Random Point in Non-overlapping Rectangles	Solution.swift	💛 Medium
✅	498	Diagonal Traverse	Solution.swift	💛 Medium
✅	510	Inorder Successor in BST II 🔐	Solution.swift	💛 Medium
✅	518	Coin Change 2	Solution.swift	💛 Medium
✅	520	Detect Capital	Solution.swift	💚 Easy
✅	526	Beautiful Arrangement	Solution.swift	💛 Medium
✅	532	K-diff Pairs in an Array	Solution.swift	💛 Medium
✅	535	Encode and Decode TinyURL	Solution.swift	💛 Medium
✅	538	Convert BST to Greater Tree	Solution.swift	💛 Medium
✅	551	Student Attendance Record I	Solution.swift	💚 Easy
✅	556	Next Greater Element III	Solution.swift	💛 Medium
✅	563	Binary Tree Tilt	Solution.swift	💚 Easy
✅	573	Squirrel Simulation	Solution.swift	💛 Medium
✅	582	Kill Process 🔐	Solution.swift	💛 Medium
✅	593	Valid Square	Solution.swift	💛 Medium
✅	594	Longest Harmonious Subsequence	Solution.swift	💚 Easy
✅	604	Design Compressed String Iterator 🔐	Solution.swift	💚 Easy
✅	605	Can Place Flowers	Solution.swift	💚 Easy
✅	616	Add Bold Tag in String 🔐	Solution.swift	💛 Medium
✅	621	Task Scheduler	Solution.swift	💛 Medium
✅	623	Add One Row to Tree	Solution.swift	💛 Medium
✅	624	Maximum Distance in Arrays 🔐	Solution.swift	💚 Easy
✅	637	Average of Levels in Binary Tree	Solution.swift	💚 Easy
✅	662	Maximum Width of Binary Tree	Solution.swift	💛 Medium
✅	669	Trim a Binary Search Tree	Solution.swift	💛 Medium
✅	673	Number of Longest Increasing Subsequence	Solution.swift	💛 Medium
✅	678	Valid Parenthesis String	Solution.swift	💛 Medium
✅	694	Number of Distinct Islands 🔐	Solution.swift	💛 Medium
✅	700	Search in a Binary Search Tree	Solution.swift	💚 Easy
✅	701	Insert into a Binary Search Tree	Solution.swift	💛 Medium
✅	702	Search in a Sorted Array of Unknown Size 🔐	Solution.swift	💛 Medium
✅	704	Binary Search	Solution.swift	💚 Easy
✅	708	Insert into a Sorted Circular Linked List 🔐	Solution.swift	💛 Medium
✅	713	Subarray Product Less Than K	Solution.swift	💛 Medium
✅	714	Best Time to Buy and Sell Stock with Transaction Fee	Solution.swift	💛 Medium
✅	716	Max Stack 🔐	Solution.swift	💚 Easy
✅	733	Flood Fill	Solution.swift	💚 Easy
✅	734	Sentence Similarity 🔐	Solution.swift	💚 Easy
✅	735	Asteroid Collision	Solution.swift	💛 Medium
✅	744	Find Smallest Letter Greater Than Target	Solution.swift	💚 Easy
✅	750	Number Of Corner Rectangles 🔐	Solution.swift	💛 Medium
✅	754	Reach a Number	Solution.swift	💛 Medium
✅	758	Bold Words in String 🔐	Solution.swift	💚 Easy
✅	760	Find Anagram Mappings 🔐	Solution.swift	💚 Easy
✅	763	Partition Labels	Solution.swift	💛 Medium
✅	771	Jewels and Stones	Solution.swift	💚 Easy
✅	784	Letter Case Permutation	Solution.swift	💛 Medium
✅	785	Is Graph Bipartite?	Solution.swift	💛 Medium
✅	797	All Paths From Source to Target	Solution.swift	💛 Medium
✅	799	Champagne Tower	Solution.swift	💛 Medium
✅	800	Similar RGB Color 🔐	Solution.swift	💚 Easy
✅	804	Unique Morse Code Words	Solution.swift	💚 Easy
✅	821	Shortest Distance to a Character	Solution.swift	💚 Easy
✅	824	Goat Latin	Solution.swift	💚 Easy
✅	832	Flipping an Image	Solution.swift	💚 Easy
✅	845	Longest Mountain in Array	Solution.swift	💛 Medium
✅	849	Maximize Distance to Closest Person	Solution.swift	💛 Medium
✅	858	Mirror Reflection	Solution.swift	💛 Medium
✅	859	Buddy Strings	Solution.swift	💚 Easy
✅	865	Smallest Subtree with all the Deepest Nodes	Solution.swift	💛 Medium
✅	869	Reordered Power of 2	Solution.swift	💛 Medium
✅	870	Advantage Shuffle	Solution.swift	💛 Medium
✅	876	Middle of the Linked List	Solution.swift	💚 Easy
✅	880	Decoded String at Index	Solution.swift	💛 Medium
✅	881	Boats to Save People	Solution.swift	💛 Medium
✅	897	Increasing Order Search Tree	Solution.swift	💚 Easy
✅	901	Online Stock Span	Solution.swift	💛 Medium
✅	902	Numbers At Most N Given Digit Set	Solution.swift	❤️ Hard
✅	905	Sort Array By Parity	Solution.swift	💚 Easy
✅	910	Smallest Range II	Solution.swift	💛 Medium
✅	933	Number of Recent Calls	Solution.swift	💚 Easy
✅	938	Range Sum of BST	Solution.swift	💚 Easy
✅	941	Valid Mountain Array	Solution.swift	💚 Easy
✅	948	Bag of Tokens	Solution.swift	💛 Medium
✅	949	Largest Time for Given Digits	Solution.swift	💚 Easy
✅	952	Largest Component Size by Common Factor	Solution.swift	❤️ Hard
✅	957	Prison Cells After N Days	Solution.swift	💛 Medium
✅	966	Vowel Spellchecker	Solution.swift	💛 Medium
✅	967	Numbers With Same Consecutive Differences	Solution.swift	💛 Medium
✅	969	Pancake Sorting	Solution.swift	💛 Medium
✅	977	Squares of a Sorted Array	Solution.swift	💚 Easy
✅	980	Unique Paths III	Solution.swift	❤️ Hard
✅	983	Minimum Cost For Tickets	Solution.swift	💛 Medium
✅	987	Vertical Order Traversal of a Binary Tree	Solution.swift	💛 Medium
✅	994	Rotting Oranges	Solution.swift	💛 Medium
✅	997	Find the Town Judge	Solution.swift	💚 Easy
✅	1007	Minimum Domino Rotations For Equal Row	Solution.swift	💛 Medium
✅	1009	Complement of Base 10 Integer	Solution.swift	💚 Easy
✅	1010	Pairs of Songs With Total Durations Divisible by 60	Solution.swift	💛 Medium
✅	1015	Smallest Integer Divisible by K	Solution.swift	💛 Medium
✅	1022	Sum of Root To Leaf Binary Numbers	Solution.swift	💚 Easy
✅	1026	Maximum Difference Between Node and Ancestor	Solution.swift	💛 Medium
✅	1032	Stream of Characters	Solution.swift	❤️ Hard
✅	1035	Uncrossed Lines	Solution.swift	💛 Medium
✅	1038	Binary Search Tree to Greater Sum Tree	Solution.swift	💛 Medium
✅	1041	Robot Bounded In Circle	Solution.swift	💛 Medium
✅	1056	Confusing Number 🔐	Solution.swift	💚 Easy
✅	1064	Fixed Point 🔐	Solution.swift	💚 Easy
✅	1065	Index Pairs of a String 🔐	Solution.swift	💚 Easy
✅	1081	Smallest Subsequence of Distinct Characters	Solution.swift	💛 Medium
✅	1091	Shortest Path in Binary Matrix	Solution.swift	💛 Medium
✅	1094	Car Pooling	Solution.swift	💛 Medium
✅	1099	Two Sum Less Than K 🔐	Solution.swift	💚 Easy
✅	1103	Distribute Candies to People	Solution.swift	💚 Easy
✅	1123	Lowest Common Ancestor of Deepest Leaves	Solution.swift	💛 Medium
✅	1165	Single-Row Keyboard 🔐	Solution.swift	💚 Easy
✅	1213	Intersection of Three Sorted Arrays	Solution.swift	💚 Easy
✅	1217	Minimum Cost to Move Chips to The Same Position	Solution.swift	💚 Easy
✅	1249	Minimum Remove to Make Valid Parentheses	Solution.swift	💛 Medium
✅	1272	Remove Interval 🔐	Solution.swift	💛 Medium
✅	1283	Find the Smallest Divisor Given a Threshold	Solution.swift	💛 Medium
✅	1286	Iterator for Combination	Solution.swift	💛 Medium
✅	1288	Remove Covered Intervals	Solution.swift	💛 Medium
✅	1290	Convert Binary Number in a Linked List to Integer	Solution.swift	💚 Easy
✅	1291	Sequential Digits	Solution.swift	💛 Medium
✅	1295	Find Numbers with Even Number of Digits	Solution.swift	💚 Easy
✅	1306	Jump Game III	Solution.swift	💛 Medium
✅	1329	Sort the Matrix Diagonally	Solution.swift	💛 Medium
✅	1332	Remove Palindromic Subsequences	Solution.swift	💚 Easy
✅	1337	The K Weakest Rows in a Matrix	Solution.swift	💚 Easy
✅	1342	Number of Steps to Reduce a Number to Zero	Solution.swift	💚 Easy
✅	1344	Angle Between Hands of a Clock	Solution.swift	💛 Medium
✅	1345	Jump Game IV	Solution.swift	❤️ Hard
✅	1365	How Many Numbers Are Smaller Than the Current Number	Solution.swift	💚 Easy
✅	1396	Design Underground System	Solution.swift	💛 Medium
✅	1426	Counting Elements 🔐	Solution.swift	💚 Easy
✅	1437	Check If All 1's Are at Least Length K Places Away	Solution.swift	💚 Easy
✅	1446	Consecutive Characters	Solution.swift	💚 Easy
✅	1457	Pseudo-Palindromic Paths in a Binary Tree	Solution.swift	💛 Medium
✅	1463	Cherry Pickup II	Solution.swift	❤️ Hard
✅	1492	The kth Factor of n	Solution.swift	💛 Medium
✅	1506	Find Root of N-Ary Tree 🔐	Solution.swift	💛 Medium
✅	1510	Stone Game IV	Solution.swift	❤️ Hard
✅	1539	Kth Missing Positive Number	Solution.swift	💚 Easy
✅	1602	Find Nearest Right Node in Binary Tree	Solution.swift	💛 Medium
✅	1631	Path With Minimum Effort	Solution.swift	💛 Medium
✅	1640	Check Array Formation Through Concatenation	Solution.swift	💚 Easy
✅	1641	Count Sorted Vowel Strings	Solution.swift	💛 Medium
✅	1646	Get Maximum in Generated Array	Solution.swift	💚 Easy
✅	1657	Determine if Two Strings Are Close	Solution.swift	💛 Medium
✅	1658	Minimum Operations to Reduce X to Zero	Solution.swift	💛 Medium
✅	1662	Check If Two String Arrays are Equivalent	Solution.swift	💚 Easy
✅	1663	Smallest String With A Given Numeric Value	Solution.swift	💛 Medium
✅	1673	Find the Most Competitive Subsequence	Solution.swift	💛 Medium
✅	1679	Max Number of K-Sum Pairs	Solution.swift	💛 Medium
✅	1680	Concatenation of Consecutive Binary Numbers	Solution.swift	💛 Medium
✅	1721	Swapping Nodes in a Linked List	Solution.swift	💛 Medium