How does TechInView's AI mock interview work?

Pick any DSA problem and choose your mode. Practice Mode gives you a simple editor plus test runs, while AI Interview Mode adds a voice interviewer that asks clarifying questions, evaluates your approach, watches you code in a live editor, and scores you on 5 dimensions — problem solving, code quality, communication, technical knowledge, and testing.

What coding interview topics are covered?

TechInView covers 70 problems across arrays, strings, trees, graphs, dynamic programming, linked lists, stacks & queues, binary search, heaps, backtracking, sliding window, and tries — with 11 easy, 47 medium, and 12 hard problems.

Is TechInView free to try?

Yes. The curated DSA subset is free to solve in Practice Mode, and every account also gets one 5-minute audio interview preview. No credit card required.

Coding interview prep

Practice DSA Interview Problems

70 problems across arrays, trees, graphs, dynamic programming, and more. Start with free solo practice on the curated set, then switch any problem into AI Interview Mode when you want the voice-based simulation.

11 easy|47 medium|12 hard

Practice Free Try 5-Minute Audio Interview

Showing 70 of 70 problems

EasyBinary Search
Binary Search
Free Practice
googleamazonmicrosoft+2
Practice AI Interview
MediumTrees
Binary Tree Level Order Traversal
Free Practice
amazongooglemicrosoft+2
Practice AI Interview
MediumStrings
Group Anagrams
Free Practice
amazongooglefacebook+2
Practice AI Interview
MediumStrings
Longest Substring Without Repeating Characters
Free Practice
amazongooglemicrosoft+2
Practice AI Interview
EasyLinked Lists
Merge Two Sorted Lists
Free Practice
amazongooglemicrosoft+2
Practice AI Interview
MediumGraphs
Number of Islands
Free Practice
amazongooglemicrosoft+2
Practice AI Interview
MediumArrays
Product of Array Except Self
Free Practice
amazonmicrosoftapple+2
Practice AI Interview
MediumHeap / PQ
Top K Frequent Elements
Free Practice
amazonmetagoogle+5
Practice AI Interview
HardArrays
Trapping Rain Water
Free Practice
googleamazonmeta+4
Practice AI Interview
EasyArrays
Two Sum
Free Practice
googleamazonmeta+2
Practice AI Interview
EasyStacks & Queues
Valid Parentheses
Free Practice
googleamazonmeta+2
Practice AI Interview
HardGraphs
Word Ladder
Free Practice
amazonmetagoogle+4
Practice AI Interview
MediumArrays
3Sum
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
EasyArrays
Best Time to Buy and Sell Stock
AI Interview Only
amazongooglemicrosoft+2
AI Interview AI Interview
MediumTrees
Binary Tree Right Side View
AI Interview Only
metaamazonbloomberg+3
AI Interview AI Interview
EasyDynamic Prog.
Climbing Stairs
AI Interview Only
amazongoogleapple+2
AI Interview AI Interview
MediumGraphs
Clone Graph
AI Interview Only
metagoogleamazon+2
AI Interview AI Interview
MediumDynamic Prog.
Coin Change
AI Interview Only
amazongooglemeta+2
AI Interview AI Interview
MediumBacktracking
Combination Sum
AI Interview Only
amazonmetagoogle+4
AI Interview AI Interview
MediumArrays
Container With Most Water
AI Interview Only
amazongooglemeta+2
AI Interview AI Interview
MediumGraphs
Course Schedule
AI Interview Only
amazonmetamicrosoft+3
AI Interview AI Interview
MediumStacks & Queues
Daily Temperatures
AI Interview Only
googleamazonmeta+4
AI Interview AI Interview
HardDynamic Prog.
Edit Distance
AI Interview Only
googleamazonmeta+4
AI Interview AI Interview
MediumStacks & Queues
Evaluate Reverse Polish Notation
AI Interview Only
amazongooglemicrosoft+3
AI Interview AI Interview
HardHeap / PQ
Find Median from Data Stream
AI Interview Only
amazongooglemeta+5
AI Interview AI Interview
MediumBinary Search
Find Minimum in Rotated Sorted Array
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
MediumBinary Search
Find Peak Element
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
HardArrays
First Missing Positive
AI Interview Only
googleamazonmicrosoft+4
AI Interview AI Interview
MediumGraphs
Graph Valid Tree
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
MediumDynamic Prog.
House Robber
AI Interview Only
amazongooglemicrosoft+3
AI Interview AI Interview
MediumTrie
Implement Trie (Prefix Tree)
AI Interview Only
googleamazonmicrosoft+4
AI Interview AI Interview
MediumBinary Search
Koko Eating Bananas
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
MediumHeap / PQ
Kth Largest Element in an Array
AI Interview Only
metaamazongoogle+5
AI Interview AI Interview
MediumTrees
Kth Smallest Element in a BST
AI Interview Only
amazonmetagoogle+3
AI Interview AI Interview
HardStacks & Queues
Largest Rectangle in Histogram
AI Interview Only
googleamazonmeta+5
AI Interview AI Interview
EasyHeap / PQ
Last Stone Weight
AI Interview Only
googleamazonadobe+2
AI Interview AI Interview
MediumBacktracking
Letter Combinations of a Phone Number
AI Interview Only
amazongooglemeta+4
AI Interview AI Interview
EasyLinked Lists
Linked List Cycle
AI Interview Only
amazonmicrosoftapple+2
AI Interview AI Interview
EasyStrings
Longest Common Prefix
AI Interview Only
googleamazonapple+2
AI Interview AI Interview
MediumDynamic Prog.
Longest Common Subsequence
AI Interview Only
amazongooglemeta+4
AI Interview AI Interview
MediumDynamic Prog.
Longest Increasing Subsequence
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
MediumStrings
Longest Palindromic Substring
AI Interview Only
amazonmicrosoftgoogle+3
AI Interview AI Interview
MediumTrees
Lowest Common Ancestor of a Binary Search Tree
AI Interview Only
amazonmetamicrosoft+2
AI Interview AI Interview
MediumLinked Lists
LRU Cache
AI Interview Only
amazongooglemeta+6
AI Interview AI Interview
EasyTrees
Maximum Depth of Binary Tree
AI Interview Only
amazongooglelinkedin+2
AI Interview AI Interview
MediumSliding Window
Maximum Subarray
AI Interview Only
googleamazonmeta+4
AI Interview AI Interview
HardBinary Search
Median of Two Sorted Arrays
AI Interview Only
googleamazonmeta+4
AI Interview AI Interview
MediumArrays
Merge Intervals
AI Interview Only
googlemetaamazon+4
AI Interview AI Interview
HardLinked Lists
Merge K Sorted Lists
AI Interview Only
amazongooglemeta+4
AI Interview AI Interview
MediumStacks & Queues
Min Stack
AI Interview Only
amazongooglemicrosoft+3
AI Interview AI Interview
MediumSliding Window
Minimum Size Subarray Sum
AI Interview Only
metagoogleamazon+3
AI Interview AI Interview
HardStrings
Minimum Window Substring
AI Interview Only
metaamazongoogle+4
AI Interview AI Interview
HardBacktracking
N-Queens
AI Interview Only
googleamazonmeta+4
AI Interview AI Interview
MediumGraphs
Pacific Atlantic Water Flow
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
MediumBacktracking
Palindrome Partitioning
AI Interview Only
amazongooglemeta+3
AI Interview AI Interview
MediumBacktracking
Permutations
AI Interview Only
metaamazongoogle+4
AI Interview AI Interview
MediumLinked Lists
Remove Nth Node From End of List
AI Interview Only
metaamazongoogle+3
AI Interview AI Interview
MediumHeap / PQ
Reorganize String
AI Interview Only
googleamazonmeta+4
AI Interview AI Interview
EasyLinked Lists
Reverse Linked List
AI Interview Only
amazongooglemicrosoft+2
AI Interview AI Interview
MediumBinary Search
Search a 2D Matrix
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
MediumBinary Search
Search in Rotated Sorted Array
AI Interview Only
googleamazonmeta+4
AI Interview AI Interview
HardTrees
Serialize and Deserialize Binary Tree
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
HardSliding Window
Sliding Window Maximum
AI Interview Only
googleamazonmeta+4
AI Interview AI Interview
MediumStrings
String to Integer (atoi)
AI Interview Only
amazonmicrosoftapple+4
AI Interview AI Interview
MediumBacktracking
Subsets
AI Interview Only
metaamazonmicrosoft+3
AI Interview AI Interview
MediumHeap / PQ
Task Scheduler
AI Interview Only
metaamazongoogle+4
AI Interview AI Interview
MediumDynamic Prog.
Unique Paths
AI Interview Only
googleamazonmeta+3
AI Interview AI Interview
MediumTrees
Validate Binary Search Tree
AI Interview Only
amazongooglemicrosoft+2
AI Interview AI Interview
MediumDynamic Prog.
Word Break
AI Interview Only
amazongooglemeta+4
AI Interview AI Interview
MediumBacktracking
Word Search
AI Interview Only
amazonmetamicrosoft+4
AI Interview AI Interview