leetcode-swift
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davidseek
Here you can find my Swift submissions for the leetcode challenges
LeetCode Swift Solutions
My goal is to provide access to my solutions and to have most of them in the perfect: Runtime: 0 ms, faster than 100.00% of Swift online submissions for Valid Parentheses.
- #1 Two Sum
- #2 Add Two Number
- #3 Longest Substring Without Repeating Characters
- #8 String to Integer (atoi)
- #12 Integer to Roman
- #13 Roman to Integer
- #15 Three Sum
- #20 Valid Parentheses
- #21 Merge Two Sorted Lists
- #23 Merge k Sorted Lists
- #24 Swap Nodes in Pairs
- #42 Trapping Rain Water
- #48 Rotate Image
- #49 Group Anagrams
- #53 Maximum Subarray
- #58 Length of Last Word
- #70 Climbing Stairs
- #78 Subsets
- #88 Merge Sorted Array
- #94 Binary Tree Inorder Traversal
- #98 Validate Binary Search Tree
- #101 Symmetric Tree
- #102 Binary Tree Level Order Traversal
- #103 Binary Tree Zigzag Level Order Traversal
- #104 Maximum Depth of Binary Tree
- #121 Best Time to Buy and Sell Stock
- #124 Binary Tree Maximum Path Sum
- #127 Word Ladder
- #138 Copy List with Random Pointer
- #139 Word Break
- #144 Binary Tree Preorder Traversal
- #145 Binary Tree Postorder Traversal
- #146 LRU Cache
- #155 Min Stack
- #160 Intersection of Two Linked Lists
- #167 Two Sum II - Input array is sorted
- #173 Binary Search Tree Iterator
- #189 Rotate Array
- #199 Binary Tree Right Side View
- #200 Number of Islands
- #203 Remove Linked List Elements
- #206 Reverse Linked List
- #207 Course Schedule
- #208 Implement Trie (Prefix Tree)
- #210 Course Schedule II
- #226 Invert Binary Tree
- #230 Kth Smallest Element in a BST
- #231 Power of Two
- #232 Implement Queue using Stacks
- #234 Palindrome Linked List
- #236 Lowest Common Ancestor of a Binary Tree
- #237 Delete Node in a Linked List
- #240 Search a 2D Matrix II
- #252 Meeting Rooms
- #253 Meeting Rooms II
- #270 Closest Binary Search Tree Value
- #286 Walls and Gates
- #293 Flip Game
- #297 Serialize and Deserialize Binary Tree
- #328 Odd Even Linked List
- #332 Reconstruct Itinerary
- #334 Reverse String
- #347 Top K Frequent Elements
- #348 Design Tic-Tac-Toe
- #349 Intersection of Two Arrays
- #367 Valid Perfect Square
- #380 Insert Delete GetRandom O(1)
- #392 Is Subsequence
- #402 Remove K Digits
- #403 Frog Jump
- #412 Fizz Buzz
- #438 Find All Anagrams in a String
- #443 String Compression
- #448 Find All Numbers Disappeared in an Array
- #451 Sort Characters By Frequencey
- #509 Fibonacci Number
- #540 Single Element in a Sorted Array
- #547 Friend Circles
- #567 Permutation in String
- #572 Subtree of Another Tree
- #637 Average of Levels in Binary Tree
- #653 Two Sum IV - Input is a BST
- #657 Robot Return to Origin
- #692 Top K Frequent Words
- #695 Max Area of Island
- #700 Search in a Binary Search Tree
- #706 Design HashMap
- #773 Flood Fill
- #811 Subdomain Visit Count
- #819 Most Common Word
- #844 BAckspace String Compare
- #918 Maximum Sum Circular Subarray
- #937 Reorder Data in Log Files
- #957 Prison Cells After N Days
- #966 Vowel Spellchecker
- #973 K Closest Points to Origin
- #993 Cousins in Binary Tree
- #994 Rotting Oranges
- #997 Find the Town Judge
- #1008 Construct Binary Search Tree from Preorder Traversal
- #1167 Minimum Cost to Connect Sticks
- #1232 Check If Is Is a Straight Line
- #1268 Search Suggestions System
- #1277 Count Square Submatrices with All Ones
- #1347 Minimum Number of Steps to Make Two Strings Anagram
- #1431 Kids With the Greatest Number of Candies
- #1441 Build an Array With Stack Operations
All challenges are copyright by https://leetcode.com/ and their respective authors.
I'm solely providing my solutions as well as questions and examples for context.
davidseek