# Status Problem video Level Completes Likes
154

Priority Queue in Data Structure

Beginner % 0
153

Find the Second Largest Element in an Array

Beginner % 1
152

Breadth-First Search/Traversal in a Graph

Beginner % 1
151

Breadth-First Search/Traversal in a Binary Tree

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150

Sort Names by their Last Names

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147

Introduction To Backtracking Programming

Beginner % 0
146

Dynamic Programming - Stairs Climbing Puzzle

Beginner % 1
144

Introduction To Dynamic Programming - Fibonacci Series

Beginner % 1
141

Find the Single Occurrence Element in an Array (Odd One Out)

Beginner % 1
139

Find Missing Numbers in Sequences - XOR Method

Beginner % 1
138

Find the Maximum Value in a Binary Tree

Beginner % 0
136

Verifying Mirror Binary Trees

Beginner % 1
130

Find and Print Full Nodes in a Binary Tree

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128

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

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127

Numbers Palindrome in Both Decimal and Octal

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124

Create a Specific Triangle Pattern from an Array

Beginner % 0
122

Goldbach's Conjecture

Beginner % 0
120

Convert Decimal to Irreducible Fraction (Simplified Form)

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119

Clock Angle Problem

Beginner % 1
115

Graph Representation - Adjacency Matrix and Adjacency List

Beginner % 2
113

Towers Of Hanoi

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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

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103

Delete X Nodes After Y Nodes In a Linked List

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94

Depth First Search/Traversal in Binary Tree

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91

Check if Array is Consecutive Integers

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87

Find Intersection of Two Sorted Arrays

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68

Transforming a Binary Tree into its Mirror Image

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67

Printing Nodes without Siblings in a Binary Tree

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60

Determine if Two BSTs are Identical

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52

Find Common Numbers in Three Sorted Arrays

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47

Find the Size of the Binary Tree

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36

Find the Maximum Depth OR Height of a Binary Tree

Beginner % 1
32

Binary Search Tree (BST) Complete Implementation.

Beginner % 0

Priority Queue in Data Structure

Find the Second Largest Element in an Array

Breadth-First Search/Traversal in a Graph

Breadth-First Search/Traversal in a Binary Tree

Sort Names by their Last Names

Introduction To Backtracking Programming

Dynamic Programming - Stairs Climbing Puzzle

Introduction To Dynamic Programming - Fibonacci Series

Find the Single Occurrence Element in an Array (Odd One Out)

Find Missing Numbers in Sequences - XOR Method

Find the Maximum Value in a Binary Tree

Verifying Mirror Binary Trees

Find and Print Full Nodes in a Binary Tree

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

Numbers Palindrome in Both Decimal and Octal

Create a Specific Triangle Pattern from an Array

Goldbach's Conjecture

Convert Decimal to Irreducible Fraction (Simplified Form)

Clock Angle Problem

Graph Representation - Adjacency Matrix and Adjacency List

Towers Of Hanoi

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

Delete X Nodes After Y Nodes In a Linked List

Depth First Search/Traversal in Binary Tree

Check if Array is Consecutive Integers

Find Intersection of Two Sorted Arrays

Transforming a Binary Tree into its Mirror Image

Printing Nodes without Siblings in a Binary Tree

Determine if Two BSTs are Identical

Find Common Numbers in Three Sorted Arrays

Find the Size of the Binary Tree

Find the Maximum Depth OR Height of a Binary Tree

Binary Search Tree (BST) Complete Implementation.