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Dell Interview Questions (11)

Practice real interview problems from Dell

All11 Easy6 Medium3 Hard2

Status	Title	Solution	Practice	Difficulty	Companies	Topics
	1. Two Sum	Solution	Solve	Easy	Accenture+128	Array Hash Table
	3. Longest Substring Without Repeating Characters	Solution	Solve	Medium	Accenture+111	Hash Table Sliding Window+1
	20. Valid Parentheses	Solution	Solve	Easy	Accenture+118	Stack String
	23. Merge k Sorted Lists	Solution	Solve	Hard	Accenture+52	Divide and Conquer Heap (Priority Queue)+2
	28. Find the Index of the First Occurrence in a String	Solution	Solve	Easy	Adobe+16	String String Matching+1
	49. Group Anagrams	Solution	Solve	Medium	Accolite+90	Array Hash Table+2
	185. Department Top Three Salaries	Solution	Solve	Hard	Accenture+11	Database
	196. Delete Duplicate Emails	Solution	Solve	Easy	Amazon+8	Database
	696. Count Binary Substrings	Solution	Solve	Easy	Adobe+19	String Two Pointers
	1328. Break a Palindrome	Solution	Solve	Medium	Dell+5	Greedy String
	1413. Minimum Value to Get Positive Step by Step Sum	Solution	Solve	Easy	Amazon+7	Array Prefix Sum

Two Sum

Easy✓ Solution📹 Video

Accenture+128

Array Hash Table

Longest Substring Without Repeating Characters

Medium✓ Solution📹 Video

Accenture+111

Hash Table Sliding Window String

Valid Parentheses

Easy✓ Solution📹 Video

Accenture+118

Merge k Sorted Lists

Hard✓ Solution📹 Video

Accenture+52

Divide and Conquer Heap (Priority Queue)Linked List+1

Find the Index of the First Occurrence in a String

Easy✓ Solution📹 Video

Adobe+16

String String Matching Two Pointers

Group Anagrams

Medium✓ Solution📹 Video

Accolite+90

Array Hash Table Sorting+1

Department Top Three Salaries

Hard✓ Solution📹 Video

Accenture+11

Delete Duplicate Emails

Easy✓ Solution📹 Video

Amazon+8

Count Binary Substrings

Easy✓ Solution

Adobe+19

String Two Pointers

Break a Palindrome

Medium✓ Solution📹 Video

Dell+5

Minimum Value to Get Positive Step by Step Sum

Easy✓ Solution📹 Video

Amazon+7

Array Prefix Sum