LeetCode

LeetCode Problems (https://leetcode.com/)

• 0001 Two Sum
• 0002 Add Two Numbers
• 0003 Longest Substring Without Repeating Characters
• 0004 Median of Two Sorted Arrays
• 0005 Longest Palindromic Substring
• 0006 ZigZag Conversion
• 0009 Palindrome Number
• 0011 Container With Most Water
• 0012 Integer to Roman
• 0013 Roman to Integer
• 0014 Longest Common Prefix
• 0017 Letter Combination of a Phone Number
• 0019 Remove Nth Node From End of List
• 0020 Valid Parentheses
• 0021 Merge Two Sorted Lists
• 0022 Generate Parentheses
• 0023 Merge k Sorted Lists
• 0024 Swap Nodes in Pairs
• 0026 Remove Duplicates from Sorted Array
• 0027 Remove Element
• 0029 Divide Two Integers
• 0031 Next Permutation
• 0033 Search in Rotated Sorted Array
• 0034 Find First and Last Position of Element in Sorted Array
• 0035 Search Insert Position
• 0038 Count and Say
• 0039 Combination Sum
• 0046 Permutations
• 0048 Rotate Image
• 0049 Group Anagrams
• 0053 Maximum Subarray
• 0055 Jump Game
• 0056 Merge Intervals
• 0066 Plus One
• 0067 Add Binary
• 0069 Sqrt(x)
• 0070 Climbing Stairs
• 0072 Edit Distance
• 0074 Search a 2D Matrix
• 0075 Sort Colors
• 0078 Subsets
• 0079 Word Search
• 0088 Merge Sorted Array
• 0091 Decode Ways
• 0094 Binary Tree Inorder Traversal
• 0100 Same Tree
• 0102 Binary Tree Level Order Traversal
• 0107 Binary Tree Level Order Traversal II
• 0118 Pascal's Triangle
• 0121 Best Time to Buy and Sell Stock
• 0122 Best Time to Buy and Sell Stock II
• 0125 Valid Palindrome
• 0131 Palindrome Positioning
• 0136 Single Number
• 0138 Copy List with Random Pointer
• 0141 Linked List Cycle
• 0143 Reorder List
• 0144 Binary Tree Preorder Traversal
• 0145 Binary Tree Postorder Traverlsal
• 0151 Reverse Words in a String
• 0152 Maximum Product Subarray
• 0153 Find Minimum in Rotated Sorted Array
• 0155 Min Stack
• 0160 Intersection of Two Linked Lists
• 0169 Majority Element
• 0172 Factorial Trailing Zeroes
• 0189 Rotate Array
• 0191 Number of 1 Bits
• 0198 House Robber
• 0202 Happy Number
• 0203 Remove Linked List Elements
• 0204 Count Primes
• 0205 Isomorphic Strings
• 0206 Reverse Linked List
• 0208 Implement Trie (Prefix Tree)
• 0217 Contains Duplicate
• 0219 Contains Duplicate II
• 0225 Implement Stack using Queues
• 0226 Invert Binary Tree
• 0227 Basic Calculator II
• 0230 Kth Smallest Element in a BST
• 0231 Power of Two
• 0232 Implement Queue using Stacks
• 0234 Palindrome Linked List
• 0237 Delete Node in a Linked List
• 0238 Product of Array Except Self
• 0242 Valid Anagram
• 0258 Add Digits
• 0268 Missing Number
• 0278 First Bad Version
• 0283 Move Zeroes
• 0287 Find the Duplicate Number
• 0292 Nim Game
• 0322 Coin Change
• 0328 Odd Even Linked List
• 0344 Reverse String
• 0345 Reverse Vowels of a String
• 0347 Top K Frequent Elements
• 0349 Intersection of Two Arrays
• 0350 Intersection of Two Arrays II
• 0367 Valid Perfect Square
• 0371 Sum of Two Integers
• 0373 Find K Pairs with Smallers Sums
• 0383 Ransom Note
• 0385 Mini Parser
• 0387 First Unique Character in a String
• 0392 Is Subsequence
• 0402 Remove K Digits
• 0412 Fizz Buzz
• 0443 String Compression
• 0448 Find All Numbers Disappeared in an Array
• 0451 Sort Characters By Frequency
• 0463 Island Perimeter
• 0476 Number Complement
• 0496 Next Greater Element I
• 0500 Keyboard Row
• 0503 Next Greater Element II
• 0525 Contiguous Array
• 0540 Single Element in a Sorted Array
• 0543 Diameter of Binary Tree
• 0557 Reverse Words in a String III
• 0560 Subarray Sum Equals K
• 0605 Can Place Flowers
• 0617 Merge Two Binary Trees
• 0657 Robot Return to Origin
• 0665 Non Decreasing Array
• 0674 Longest Continuous Increasing Subsequence
• 0678 Valid Parenthesis String
• 0692 Top K Frequent Words
• 0700 Search in a Binary Search Tree
• 0704 Binary Search
• 0705 Design Hash Set
• 0707 Design Linked List
• 0709 To Lower Case
• [0724 Find Pivot Index](0724- Find-Pivot-Index.py)
• 0733 Flood Fill
• 0739 Daily Temperatures
• 0771 Jewels and Stones
• 0844 Backspace String Compare
• 0849 Maximize Distance to Closest Person
• 0852 Peak Index in a Mountain Array
• 0856 Score of Parentheses
• 0872 Leaf-Similar Trees
• 0876 Middle of the Linked List
• 0881 Boats to Save People
• 0890 Find and Replace Pattern
• 0929 Unique Email Addresses
• 0941 Valid Mountain Array
• 0961 N-Repeated Element in Size 2N Array
• 0981 Time Based Key-Value Store
• 0993 Cousins in Binary Tree
• 0997 Find the Town Judge
• 1014 Best Sightseeing Pair
• 1021 Remove Outermost Parentheses
• 1029 Two City Scheduling
• 1046 Last Stone Weight
• 1047 Remove All Adjacent Duplicates In String
• 1051 Height Checker
• 1108 Defanging an IP Address
• 1137 N-th Tribonacci Number
• 1160 Find Words That Can Be Formed by Characters
• 1189 Maximum Number of Balloons
• 1207 Unique Number of Occurrences
• 1281 Subtract the Product and Sum of Digits of an Integer
• 1317 Convert Integer to the Sum of Two No-Zero Integers
• 1356 Sort Integers by The Number of 1 Bits
• 1360 Number of Days Between Two Dates
• 1362 Closest Divisors
• 1366 Rank Team by Votes
• 1370 Increasing Decreasing String
• 1374 Generate a String With Characters That Have Odd Counts
• 1380 Lucky Numbers in a Matrix
• 1399 Count Largest Group
• 1400 Construct K Palindrome Strings
• 1401 Circle and Rectangle Overlapping
• 1426 Counting Elements
• 1427 Perform String Shifts
• 1431 Kids With the Greatest Number of Candies
• 1432 Max Difference You Can Get From Changing an Integer
• 1433 Check If a String Can Break Another String
• 1480 Running Sum of 1d Array
• 1991 Find the Middle Index in Array