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Vishesh Yadav20 problems5 Easy13 Med2 Hard

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0 solved20 left

Easy

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Medium

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Hard

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Status	Title	Solution	Practice	Difficulty	Companies	Topics
	20. Valid Parentheses	Solution	Solve	Easy	-	Stack String
	19. Remove Nth Node From End of List	Solution	Solve	Medium	-	Linked List Two Pointers
	18. 4Sum	Solution	Solve	Medium	-	Array Sorting+1
	17. Letter Combinations of a Phone Number	Solution	Solve	Medium	-	Backtracking Hash Table+1
	16. 3Sum Closest	Solution	Solve	Medium	-	Array Sorting+1
	15. 3Sum	Solution	Solve	Medium	-	Array Sorting+1
	11. Container With Most Water	Solution	Solve	Medium	-	Array Greedy+1
	14. Longest Common Prefix	Solution	Solve	Easy	-	String Trie
	13. Roman to Integer	Solution	Solve	Easy	-	Hash Table Math+1
	12. Integer to Roman	Solution	Solve	Medium	-	Hash Table Math+1
	10. Regular Expression Matching	Solution	Solve	Hard	-	Dynamic Programming Recursion+1
	9. Palindrome Number	Solution	Solve	Easy	-	Math
	8. String to Integer (atoi)	Solution	Solve	Medium	-	String
	7. Reverse Integer	Solution	Solve	Medium	-	Math
	6. Zigzag Conversion	Solution	Solve	Medium	-	String
	5. Longest Palindromic Substring	Solution	Solve	Medium	-	Dynamic Programming String+1
	1. Two Sum	Solution	Solve	Easy	-	Array Hash Table
	4. Median of Two Sorted Arrays	Solution	Solve	Hard	-	Array Binary Search+1
	3. Longest Substring Without Repeating Characters	Solution	Solve	Medium	-	Hash Table Sliding Window+1
	2. Add Two Numbers	Solution	Solve	Medium	-	Linked List Math+1

Valid Parentheses

Easy✓ Solution📹 Video

Remove Nth Node From End of List

Medium✓ Solution📹 Video

Linked List Two Pointers

4Sum

Medium✓ Solution

Array Sorting Two Pointers

Letter Combinations of a Phone Number

Medium✓ Solution

Backtracking Hash Table String

3Sum Closest

Medium✓ Solution📹 Video

Array Sorting Two Pointers

3Sum

Medium✓ Solution📹 Video

Array Sorting Two Pointers

Container With Most Water

Medium✓ Solution📹 Video

Array Greedy Two Pointers

Longest Common Prefix

Easy✓ Solution📹 Video

Roman to Integer

Easy✓ Solution📹 Video

Hash Table Math String

Integer to Roman

Medium✓ Solution📹 Video

Hash Table Math String

Regular Expression Matching

Hard✓ Solution

Dynamic Programming Recursion String

Palindrome Number

Easy✓ Solution📹 Video

String to Integer (atoi)

Medium✓ Solution📹 Video

Reverse Integer

Medium✓ Solution📹 Video

Zigzag Conversion

Medium✓ Solution📹 Video

Longest Palindromic Substring

Medium✓ Solution📹 Video

Dynamic Programming String Two Pointers

Two Sum

Easy✓ Solution📹 Video

Array Hash Table

Median of Two Sorted Arrays

Hard✓ Solution📹 Video

Array Binary Search Divide and Conquer

Longest Substring Without Repeating Characters

Medium✓ Solution📹 Video

Hash Table Sliding Window String

Add Two Numbers

Medium✓ Solution📹 Video

Linked List Math Recursion

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