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DSA Corner

Dashboard Questions Topics Companies Sheets

OT Interview Questions

50 coding problems asked in OT interviews. Prepare for your technical interview with real questions.

50

Problems

15

Easy

23

Medium

12

Hard

Difficulty

All50 Easy15 Medium23 Hard12

Status	Title	Video	Leetcode	Solve	Difficulty	Companies	Topics
	3. Longest Substring Without Repeating Characters			Solve	Medium	Adobe+20	Hash Table Sliding Window+1
	22. Generate Parentheses			Solve	Medium	Adobe+12	Backtracking Dynamic Programming+1
	33. Search in Rotated Sorted Array			Solve	Medium	Accenture+91	Array Binary Search
	92. Reverse Linked List II			Solve	Medium	1218 Global+122	Linked List
	128. Longest Consecutive Sequence			Solve	Medium	Adobe+9	Array Hash Table+1
	146. LRU Cache			Solve	Medium	Accolite+56	Design Doubly-Linked List+2
	215. Kth Largest Element in an Array			Solve	Medium	ABCO+44	Array Divide and Conquer+3
	300. Longest Increasing Subsequence			Solve	Medium	Accenture+78	Array Binary Search+1
	373. Find K Pairs with Smallest Sums			Solve	Medium	Amazon+4	Array Heap (Priority Queue)
	445. Add Two Numbers II			Solve	Medium	Accenture+49	Linked List Math+1
	478. Generate Random Point in a Circle			Solve	Medium	Leap Motion	Geometry Math+2
	735. Asteroid Collision			Solve	Medium	Amazon+15	Array Simulation+1
	739. Daily Temperatures			Solve	Medium	Amazon+7	Array Monotonic Stack+1
	841. Keys and Rooms			Solve	Medium	Amazon+1	Breadth-First Search Depth-First Search+1
	930. Binary Subarrays With Sum			Solve	Medium	Amazon+4	Array Hash Table+2
	947. Most Stones Removed with Same Row or Column			Solve	Medium	Amazon+3	Depth-First Search Graph+2
	1010. Pairs of Songs With Total Durations Divisible by 60			Solve	Medium	Amazon+7	Array Counting+1
	1152. Analyze User Website Visit Pattern			Solve	Medium	Amazon+1	Array Hash Table+1
	1209. Remove All Adjacent Duplicates in String II			Solve	Medium	Amazon+7	Stack String
	1282. Group the People Given the Group Size They Belong To			Solve	Medium	Apple+3	Array Greedy+1
	1650. Lowest Common Ancestor of a Binary Tree III			Solve	Medium	Amazon+6	Binary Tree Hash Table+2
	2096. Step-By-Step Directions From a Binary Tree Node to Another			Solve	Medium	Amazon+5	Binary Tree Depth-First Search+2
	2098. Subsequence of Size K With the Largest Even Sum			Solve	Medium	DRW+2	Array Greedy+1

Longest Substring Without Repeating Characters

Medium✓ Solution📹 Video

Adobe+20

Hash Table Sliding Window String

Generate Parentheses

Medium✓ Solution📹 Video

Adobe+12

Backtracking Dynamic Programming String

Search in Rotated Sorted Array

Medium✓ Solution📹 Video

Accenture+91

Array Binary Search

Reverse Linked List II

Medium✓ Solution📹 Video

1218 Global+122

Longest Consecutive Sequence

Medium✓ Solution📹 Video

Adobe+9

Array Hash Table Union Find

LRU Cache

Medium✓ Solution📹 Video

Accolite+56

Design Doubly-Linked List Hash Table+1

Kth Largest Element in an Array

Medium✓ Solution📹 Video

ABCO+44

Array Divide and Conquer Heap (Priority Queue)+2

Longest Increasing Subsequence

Medium✓ Solution📹 Video

Accenture+78

Array Binary Search Dynamic Programming

Find K Pairs with Smallest Sums

Medium✓ Solution📹 Video

Amazon+4

Array Heap (Priority Queue)

Add Two Numbers II

Medium✓ Solution📹 Video

Accenture+49

Linked List Math Stack

Generate Random Point in a Circle

Medium✓ Solution📹 Video

Leap Motion

Geometry Math Randomized+1

Asteroid Collision

Medium✓ Solution📹 Video

Amazon+15

Array Simulation Stack

Daily Temperatures

Medium✓ Solution📹 Video

Amazon+7

Array Monotonic Stack Stack

Keys and Rooms

Medium✓ Solution📹 Video

Amazon+1

Breadth-First Search Depth-First Search Graph

Binary Subarrays With Sum

Medium✓ Solution📹 Video

Amazon+4

Array Hash Table Prefix Sum+1

Most Stones Removed with Same Row or Column

Medium✓ Solution📹 Video

Amazon+3

Depth-First Search Graph Hash Table+1

Pairs of Songs With Total Durations Divisible by 60

Medium✓ Solution📹 Video

Amazon+7

Array Counting Hash Table

Analyze User Website Visit Pattern

Medium📹 Video

Amazon+1

Array Hash Table Sorting

Remove All Adjacent Duplicates in String II

Medium✓ Solution📹 Video

Amazon+7

Group the People Given the Group Size They Belong To

Medium✓ Solution📹 Video

Apple+3

Array Greedy Hash Table

Lowest Common Ancestor of a Binary Tree III

Medium📹 Video

Amazon+6

Binary Tree Hash Table Tree+1

Step-By-Step Directions From a Binary Tree Node to Another

Medium✓ Solution📹 Video

Amazon+5

Binary Tree Depth-First Search String+1

Subsequence of Size K With the Largest Even Sum

Medium📹 Video

DRW+2

Array Greedy Sorting