Featured Lists

Top 20 Problems on Dynamic programming

Top 10 Problems on Backtracking

Top 20 Problems on Graph

Top 25 Problems on Trees

Top 10 Problems on Bits Manipulation

Top 15 Problems in LinkedList

All Problems

# Status Problem video Level Completes Likes
23

Find Whether Two Strings are Permutation of each other

Beginner % 1
22

Find Intersection Point in Two Linked Lists

Medium % 0
21

Linked List cycle detection - Tortoise and Hare Algorithm

Medium % 0
20

Reverse a Linked List

Beginner % 0
19

Exploring All Paths, Including Diagonal, from Top Left to Bottom Right in 2D Array

Medium % 1
18

All Paths from Top Left to Bottom Right in 2D Array

Medium % 0
17

Merge or Combine Two Sorted Linked Lists

Medium % 0
16

Singly Linked List Implementation

Beginner % 0
15

Efficiently Rearrange Positive and Negative Numbers in Array on Each Side

Hard % 0
14

Longest Shared Prefix Sequence in a String

Medium % 0
12

Efficient Methods to Find Pairs with Sum K in an Array

Beginner % 0
11

Check If String has All Unique Characters

Beginner % 0
10

Quick Sort Implementation

Medium % 0
9

Valid or Well Formed Parentheses | Part - 1

Medium % 0
8

Efficient Search in 2D Sorted Array: Find an Element

Medium % 0
7

Determine If a String is Palindrome

Beginner % 0
6

Find a peak element in a Given Array

Beginner % 0
5

Find two Missing Numbers in a Sequence of Consecutive Numbers

Beginner % 0
4

Find a Missing Number From a Sequence of Consecutive Numbers

Beginner % 0
3

Hash Table - Java

Beginner % 0
2

Merge Sort - Updated - Most Efficient ways to Implement

Medium % 1

Find Whether Two Strings are Permutation of each other

Find Intersection Point in Two Linked Lists

Linked List cycle detection - Tortoise and Hare Algorithm

Reverse a Linked List

Exploring All Paths, Including Diagonal, from Top Left to Bottom Right in 2D Array

All Paths from Top Left to Bottom Right in 2D Array

Merge or Combine Two Sorted Linked Lists

Singly Linked List Implementation

Efficiently Rearrange Positive and Negative Numbers in Array on Each Side

Longest Shared Prefix Sequence in a String

Efficient Methods to Find Pairs with Sum K in an Array

Check If String has All Unique Characters

Quick Sort Implementation

Valid or Well Formed Parentheses | Part - 1

Efficient Search in 2D Sorted Array: Find an Element

Determine If a String is Palindrome

Find a peak element in a Given Array

Find two Missing Numbers in a Sequence of Consecutive Numbers

Find a Missing Number From a Sequence of Consecutive Numbers

Hash Table - Java

Merge Sort - Updated - Most Efficient ways to Implement