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
133

Reverse Level Order Traversal of Binary Trees

Medium % 0
132

Find the Deepest Node in a Binary Tree

Medium % 1
131

Find the Height of a tree without using Recursion

Medium % 0
130

Find and Print Full Nodes in a Binary Tree

Beginner % 0
129

Binary Min-Max Heap Implementation

Hard % 0
128

Magic Index - Find Index In Sorted Array Such That A[i] = i

Beginner % 0
127

Numbers Palindrome in Both Decimal and Octal

Beginner % 0
126

Generate All Permutations of a String (Well-Ordered)

Medium % 0
125

Find the Increasing Triplet Sub-sequence in an array

Medium % 0
124

Create a Specific Triangle Pattern from an Array

Beginner % 0
123

Colorful Numbers

Hard % 3
122

Goldbach's Conjecture

Beginner % 0
120

Convert Decimal to Irreducible Fraction (Simplified Form)

Beginner % 0
119

Clock Angle Problem

Beginner % 1
117

Stack with Max Tracking: Find the Largest Element (Optimized)

Medium % 1
116

Generate All Balanced Parentheses Combinations (N Pairs)

Medium % 1
115

Graph Representation - Adjacency Matrix and Adjacency List

Beginner % 2
114

Counting Sort Algorithm

Medium % 0
113

Towers Of Hanoi

Beginner % 0
112

Generate All n-Bit Binary Strings

Medium % 1
111

Find Unique Number in Array with Duplicates (Except One)

Beginner % 1
110

Tricky Sorting: Sort 3 Numbers Without If Statements (or Only Max())

Beginner % 0
109

Find Greatest Common Divisor (GCD) Efficiently with Euclidean Algorithm

Beginner % 0
108

Queue with Stacks: Efficient Implementation Using Stack Operations

Medium % 0
107

Alternate Splitting of a given Linked List

Medium % 0
106

Reverse a Doubly-Linked List (In-place Algorithm)

Medium % 0
105

Swapping Nodes in a Linked List (Kth Position)

Medium % 0
103

Delete X Nodes After Y Nodes In a Linked List

Beginner % 0
102

Merge Sort for Linked Lists (In-place Algorithm)

Medium % 0
101

Merge a Linked list into another Linked List at Alternate Positions

Medium % 0
100

AVL Tree - Insertion

Hard % 0
99

Construct a binary tree from given Inorder and Level Order Traversal

Hard % 0

Reverse Level Order Traversal of Binary Trees

Find the Deepest Node in a Binary Tree

Find the Height of a tree without using Recursion

Find and Print Full Nodes in a Binary Tree

Binary Min-Max Heap Implementation

Magic Index - Find Index In Sorted Array Such That A[i] = i

Numbers Palindrome in Both Decimal and Octal

Generate All Permutations of a String (Well-Ordered)

Find the Increasing Triplet Sub-sequence in an array

Create a Specific Triangle Pattern from an Array

Colorful Numbers

Goldbach's Conjecture

Convert Decimal to Irreducible Fraction (Simplified Form)

Clock Angle Problem

Stack with Max Tracking: Find the Largest Element (Optimized)

Generate All Balanced Parentheses Combinations (N Pairs)

Graph Representation - Adjacency Matrix and Adjacency List

Counting Sort Algorithm

Towers Of Hanoi

Generate All n-Bit Binary Strings

Find Unique Number in Array with Duplicates (Except One)

Tricky Sorting: Sort 3 Numbers Without If Statements (or Only Max())

Find Greatest Common Divisor (GCD) Efficiently with Euclidean Algorithm

Queue with Stacks: Efficient Implementation Using Stack Operations

Alternate Splitting of a given Linked List

Reverse a Doubly-Linked List (In-place Algorithm)

Swapping Nodes in a Linked List (Kth Position)

Delete X Nodes After Y Nodes In a Linked List

Merge Sort for Linked Lists (In-place Algorithm)

Merge a Linked list into another Linked List at Alternate Positions

AVL Tree - Insertion

Construct a binary tree from given Inorder and Level Order Traversal