Amazon Interview
Introduction
Union Find
Number of Islands
Number of Island II
Design
LRU Cache
LFU Cache
Serialize and Deserialize Binary Tree
Insert Delete GetRandom O(1)
Stack & Queue
Valid Parentheses
Min Stack
Sliding Window Maximum
Math
Rotate Image
Reverse Words in a String II
String to Integer (atoi)
Count Primes
Pascal's Triangle II
Rotate Function
Complex Number Multiplication
Repeated Substring Pattern
Set Mismatch
Solve the Equation
Set Matrix Zeroes
Product of Array Except Self
Search a 2D Matrix II
Roman to Integer
Integer to Roman
LinkedList
Copy List with Random Pointer
Palindrome Linked List
Merge Two Sorted Lists
Reverse Linked List
Add Two Numbers
Linked List Cycle
Intersection of Two Linked Lists
Binary Tree
Lowest Common Ancestor of a Binary Tree
Lowest Common Ancestor of a Binary Search Tree
Validate Binary Search Tree
Binary Tree Level Order Traversal
Binary Tree Right Side View
Construct Binary Tree from String
Construct String from Binary Tree
Convert BST to Greater Tree
Most Frequent Subtree Sum
Construct String from Binary Tree
Merge Two Binary Trees
Map & Set
Find All Anagrams in a String
Longest Substring Without Repeating Characters
K-diff Pairs in an Array
First Unique Character in a String
Valid Anagram
Group Anagrams
Sort
Kth Largest Element in an Array
Two Pointers
Two Sum
Two Sum II - Input array is sorted
3Sum
Trapping Rain Water
DFS & BFS
Subsets
Minesweeper
Letter Combinations of a Phone Number
Word Ladder
Bit Manipulation
Gray Code
Heap
Third Maximum Number
Merge k Sorted Lists
Dynamic Programming
Longest Palindromic Subsequence
Maximum Length of Pair Chain
Best Time to Buy and Sell Stock
Word Break
Unique Paths
Unique Path II
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