The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Software Engineer
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Coding
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medium
Design a data structure that follows the constraints of a Least Recently Used (LRU) cache. It should support get and put operations in O(1) average time complexity.
#Hash Map
#Doubly Linked List
#Design
Software Engineer
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Coding
•
medium
Given an array of intervals where intervals[i] = [starti, endi], merge all overlapping intervals, and return an array of the non-overlapping intervals that cover all the intervals in the input. This is often applied to timeline rendering in Premiere Pro.
#Array
#Sorting
Software Engineer
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Coding
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medium
Given two strings word1 and word2, return the minimum number of operations required to convert word1 to word2. You have the following three operations permitted on a word: Insert a character, Delete a character, Replace a character.
#Dynamic Programming
#Strings
Software Engineer
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Coding
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medium
Given an m x n 2D binary grid which represents a map of '1's (land) and '0's (water), return the number of islands. An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically.
#DFS
#BFS
#Matrix
Software Engineer
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Coding
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medium
Given an integer array nums and an integer k, return the k most frequent elements. You may return the answer in any order.
#Heap
#Hash Map
#Bucket Sort
Software Engineer
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Coding
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hard
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining.
#Two Pointers
#Array
#Dynamic Programming
Software Engineer
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Coding
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hard
The median is the middle value in an ordered integer list. Implement the MedianFinder class to add numbers from a data stream and return the median in O(1) or O(log N) time.
#Heap
#Design
#Data Stream
Software Engineer
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Coding
•
medium
Given a string s, find the length of the longest substring without repeating characters.
#Sliding Window
#Hash Map
#Strings
Software Engineer
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Coding
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hard
Design an algorithm to serialize and deserialize a binary tree. There is no restriction on how your serialization/deserialization algorithm should work.
#Tree
#DFS
#BFS
#String
Software Engineer
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Coding
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hard
Given the head of a linked list, reverse the nodes of the list k at a time, and return the modified list. If the number of nodes is not a multiple of k then left-out nodes, in the end, should remain as it is.
#Linked List
#Recursion
#Pointers
Software Engineer
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Coding
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hard
Given two strings s and t of lengths m and n respectively, return the minimum window substring of s such that every character in t (including duplicates) is included in the window.
#Sliding Window
#Hash Map
#Strings
Software Engineer
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Coding
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medium
Given a string s and a dictionary of strings wordDict, return true if s can be segmented into a space-separated sequence of one or more dictionary words.
#Dynamic Programming
#Trie
#Memoization
Software Engineer
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Coding
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medium
Design a Tic-Tac-Toe game that is played on an n x n board. Assume that the move method will be called sequentially. Optimize for the move method.
#Design
#Array
#Math
Software Engineer
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Coding
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medium
Given an integer array nums, return all the triplets [nums[i], nums[j], nums[k]] such that i != j, i != k, and j != k, and nums[i] + nums[j] + nums[k] == 0. Notice that the solution set must not contain duplicate triplets.
#Array
#Two Pointers
#Sorting
Software Engineer
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Coding
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hard
Design an in-memory file system to simulate the following functions: ls, mkdir, addContentToFile, and readContentFromFile.
#Design
#Trie
#Hash Map
#Object-Oriented Programming
Difficulty Radar
Based on recent AI-sourced data.
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The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
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Think Out Loud
Always explain your thought process before writing code or drawing architecture.