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Software Engineer Interview Handbook
  • README
  • Behavioral
    • Useful Links
    • Dongze Li
  • Algorithm
    • Segment Tree
    • Array
      • Product Of Array Except Self
      • Merge Strings Alternately
      • Increasing Triplet Subsequence
      • String Compression
      • Greatest Common Divisor Strings
      • Max Product Of Three
      • Find Duplicate Num
      • Valid Palindrome Ii
      • Next Permutation
      • Rearrange Array By Sign
      • Removing Min Max Elements
      • Find Original Array From Doubled
      • Reverse Words Ii
    • Backtracking
      • Letter Combination Phone Number
      • Combination Sum Iii
      • N Queens
      • Permutations
      • Combination Sum
    • Binary Search
      • Koko Eating Bananas
      • Find Peak Element
      • Successful Pairs Of Spells Potions
    • Binary Search Tree
      • Delete Node In BST
      • Validate Bst
      • Range Sum Bst
    • Binary Tree
      • Maximum Depth
      • Leaf Similar Trees
      • Maximum Level Sum
      • Binary Tree Right Side
      • Lowest Common Ancestor
      • Longest Zigzag Path
      • Count Good Nodes
      • Path Sum III
      • Maximum Path Sum
      • Move Zero
      • Diameter Binary Tree
      • Sum Root Leaf Number
      • Traversal
      • Binary Tree Vertical Order
      • Height Tree Removal Queries
      • Count Nodes Avg Subtree
      • Distribute Coins
      • Binary Tree Max Path Sum
    • Bit
      • Min Flips
      • Single Number
      • Pow
      • Find Unique Binary Str
    • BFS
      • Rotten Oranges
      • Nearest Exist From Entrance
      • Minimum Knight Moves
      • Network Delay Time
      • Minimum Height Tree
      • Knight Probability In Board
    • Design
      • LRU Cache
      • Get Random
      • LFU Cache
      • Moving Average
      • Rle Iterator
      • Design Hashmap
    • DFS
      • Reorder Routes Lead City
      • Evaluate Division
      • Keys And Rooms
      • Number Of Provinces
      • Disconnected Path With One Flip
      • Course Schedule Ii
      • Robot Room Cleaner
      • Word Break Ii
      • Number Coins In Tree Nodes
      • Maximum Increasing Cells
      • Number Coins In Tree Nodes
      • Detonate Maximum Bombs
      • Find All Possible Recipes
      • Min Fuel Report Capital
      • Similar String Groups
    • DP
      • Domino And Tromino Tiling
      • House Robber
      • Longest Common Subsequence
      • Trade Stock With Transaction Fee
      • Buy And Sell Stock
      • Longest Non Decreasing Subarray
      • Number Of Good Binary Strings
      • Delete And Earn
      • Minimum Costs Using Train Line
      • Decode Ways
      • Trapping Rain Water
      • Count Fertile Pyramids
      • Minimum Time Finish Race
      • Knapsack
      • Count Unique Char Substrs
      • Count All Valid Pickup
    • Greedy
      • Dota2 Senate
      • Smallest Range Ii
      • Can Place Flowers
      • Meeting Rooms II
      • Guess the word
      • Minimum Replacement
      • Longest Palindrome Two Letter Words
      • Parentheses String Valid
      • Largest Palindromic Num
      • Find Missing Observations
      • Most Profit Assigning Work
    • Hashmap
      • Equal Row Column Pairs
      • Two Strings Close
      • Group Anagrams
      • Detect Squares
    • Heap
      • Maximum Subsequence Score
      • Smallest Number Infinite Set
      • Total Cost Hire Workers
      • Kth Largest Element
      • Meeting Rooms III
      • K Closest Points Origin
      • Merge K Sorted List
      • Top K Frequent Elements
      • Meeting Room III
      • Num Flowers Bloom
      • Find Median From Stream
    • Intervals
      • Non Overlapping Intervals
      • Min Arrows Burst Ballons
    • Linkedlist
      • Reverse Linked List
      • Delete Middle Node
      • Odd Even Linkedlist
      • Palindrome Linkedlist
    • Monotonic Stack
      • Daily Temperatures
      • Online Stock Span
    • Random
      • Random Pick With Weight
      • Random Pick Index
      • Shuffle An Array
    • Recursion
      • Difference Between Two Objs
    • Segment Fenwick
      • Longest Increasing Subsequence II
    • Stack
      • Removing Stars From String
      • Asteroid Collision
      • Evaluate Reverse Polish Notation
      • Building With Ocean View
      • Min Remove Parentheses
      • Basic Calculator Ii
      • Simplify Path
      • Min Add Parentheses
    • Prefix Sum
      • Find The Highest Altitude
      • Find Pivot Index
      • Subarray Sum K
      • Range Addition
    • Sliding Window
      • Max Vowels Substring
      • Max Consecutive Ones III
      • Longest Subarray Deleting Element
      • Minimum Window Substring
      • K Radius Subarray Averages
    • String
      • Valid Word Abbreviations
    • Two Pointers
      • Container With Most Water
      • Max Number K Sum Pairs
      • Is Subsequence
      • Num Substrings Contains Three Char
    • Trie
      • Prefix Tree
      • Search Suggestions System
      • Design File System
    • Union Find
      • Accounts Merge
    • Multithreading
      • Basics
      • Web Crawler
  • System Design
    • Operating System
    • Mocks
      • Design ChatGPT
      • Design Web Crawler
      • Distributed Search
      • News Feed Search
      • Top K / Ad Click Aggregation
      • Design Job Scheduler
      • Distributed Message Queue
      • Google Maps
      • Nearby Friends
      • Proximity Service
      • Metrics monitoring and alert system
      • Design Email
      • Design Gaming Leaderboard
      • Facebook New Feed Live Comments
      • Dog Sitting App
      • Design Chat App (WhatsApp)
      • Design Youtube/Netflix
      • Design Google Doc
      • Design Webhook
      • Validate Instacart Shopper Checkout
      • Design Inventory
      • Design donation app
      • Design Twitter
    • Deep-Dive
      • Back of Envelope
      • Message Queue
      • Redis Sorted Set
      • FAQ
      • Geohash
      • Quadtree
      • Redis Pub/Sub
      • Cassandra DB
      • Collaborative Concurrency Control
      • Websocket / Long Polling / SSE
    • DDIA
      • Chapter 2: Data Models and Query Languages
      • Chapter 5: Replication
      • Chapter 9: Consistency and Consensus
  • OOD
    • Overview
    • Design Parking
  • Company Tags
    • Meta
    • Citadel
      • C++ Fundamentals
      • 面经1
      • Fibonacci
      • Pi
      • Probability
    • DoorDash
      • Similar String Groups
      • Door And Gates
      • Max Job Profit
      • Design File System
      • Count All Valid Pickup
      • Most Profit Assigning Work
      • Swap
      • Binary Tree Max Path Sum
      • Nearest Cities
      • Exployee Free Time
      • Tree Add Removal
    • Lyft
      • Autocomplete
      • Job Scheduler
      • Read4
      • Kvstore
    • Amazon
      • Min Binary Str Val
    • AppLovin
      • TODO
      • Java Basic Questions
    • Google
      • Huffman Tree
      • Unique Elements
    • Instacart
      • Meeting Rooms II
      • Pw
      • Pw2
      • Pw3
      • Expression1
      • Expression2
      • Expression3
      • PW All
      • Expression All
      • Wildcard
      • Free forum tech discussion
    • OpenAI
      • Spreadsheet
      • Iterator
      • Kv Store
    • Rabbit
      • Scheduler
      • SchedulerC++
    • [Microsoft]
      • Min Moves Spread Stones
      • Inorder Successor
      • Largest Palindromic Num
      • Count Unique Char Substrs
      • Reverse Words Ii
      • Find Missing Observations
      • Min Fuel Report Capital
      • Design Hashmap
      • Find Original Array From Doubled
      • Num Flowers Bloom
      • Distribute Coins
      • Find Median From Stream
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On this page
  1. Company Tags

Meta

System Design Primer

Word Break Ii

Palindrome Linkedlist

Decode Ways

LRU Cache

Valid Palindrome Ii

Move Zero

K Closest Points Origin

Sliding Window

Num Substrings Contains Three Char

Moving Average

Find Peak Element

Random Pick With Weight

Can Place Flowers

Traversal

Combination Sum

Binary Tree Vertical Order

Valid Word Abbreviations

Asteroid Collision

Basic Calculator Ii

Range Sum Bst

Meeting Rooms II

Next Permutation

Merge K Sorted List

Moving Average

Simplify Path

Find Peak Element

Random Pick Index

Top K Frequent Elements

Shuffle An Array

K Radius Subarray Averages

Min Add Parentheses

Lowest Common Ancestor

Binary Tree Right Side

Kth Largest Element

Rearrange Array By Sign

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Last updated 1 year ago