# Status Problem video Level Completes Likes
193

Implement Stack Using Linked List

Beginner % 0
187

Reverse Alternative 'k' nodes in a Linked List.

Medium % 0
186

Reverse a Linked List in groups of given size 'K'

Medium % 0
155

Find the Kth Smallest/Largest Element in an Array Using Heap

Beginner % 0
146

Dynamic Programming - Stairs Climbing Puzzle

Beginner % 1
141

Find a Number occurring odd number of times in a Given array

Beginner % 1
140

Rearrange the Array of Given Range N, such that A[i]=i

Medium % 0
139

Find a Missing Number From a Sequence of Consecutive Numbers | XOR Method

Beginner % 1
138

Find the Max element in a Given Binary Tree

Beginner % 0
132

Find the Deepest Node in a Binary Tree

Medium % 1
127

Numbers Palindrome in Both Decimal and Octal

Beginner % 0
125

Find the Increasing Triplet Sub-sequence in an array

Medium % 0
120

Convert Decimal to Irreducible Fraction (Simplified Form)

Beginner % 0
112

Generate All n-Bit Binary Strings

Medium % 1
111

Find Unique Number in Array with Duplicates (Except One)

Beginner % 1
103

Delete X Nodes After Y Nodes In a Linked List

Beginner % 0
92

Check if Array Contains All Elements Of Some Given Range

Medium % 0
91

Check if Array is Consecutive Integers

Beginner % 0
90

Find Subarray with Sum Equal to a Target Value

Medium % 0
87

Find Intersection of Two Sorted Arrays

Beginner % 0
82

Find Nodes at Distance X from a Given Node in a Tree

Hard % 0
44

Inorder Successor in Binary Tree

Medium % 0
41

Sorted Array to Binary Search Tree of Minimal Height

Medium % 1
37

Get the Height of a Node in a Binary Tree

Medium % 0
33

Reverse the binary representation of a number.

Medium % 1
29

Delete a Node in the Middle of a Linked List Without Access to Head Node

Beginner % 0
28

Determine the Nth Node from the Tail in a Linked List

Beginner % 0
26

Check if one string is Rotation of another string

Beginner % 1
20

Reverse a Linked List

Beginner % 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
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

Implement Stack Using Linked List

Reverse Alternative 'k' nodes in a Linked List.

Reverse a Linked List in groups of given size 'K'

Find the Kth Smallest/Largest Element in an Array Using Heap

Dynamic Programming - Stairs Climbing Puzzle

Find a Number occurring odd number of times in a Given array

Rearrange the Array of Given Range N, such that A[i]=i

Find a Missing Number From a Sequence of Consecutive Numbers | XOR Method

Find the Max element in a Given Binary Tree

Find the Deepest Node in a Binary Tree

Numbers Palindrome in Both Decimal and Octal

Find the Increasing Triplet Sub-sequence in an array

Convert Decimal to Irreducible Fraction (Simplified Form)

Generate All n-Bit Binary Strings

Find Unique Number in Array with Duplicates (Except One)

Delete X Nodes After Y Nodes In a Linked List

Check if Array Contains All Elements Of Some Given Range

Check if Array is Consecutive Integers

Find Subarray with Sum Equal to a Target Value

Find Intersection of Two Sorted Arrays

Find Nodes at Distance X from a Given Node in a Tree

Inorder Successor in Binary Tree

Sorted Array to Binary Search Tree of Minimal Height

Get the Height of a Node in a Binary Tree

Reverse the binary representation of a number.

Delete a Node in the Middle of a Linked List Without Access to Head Node

Determine the Nth Node from the Tail in a Linked List

Check if one string is Rotation of another string

Reverse a Linked List

Valid or Well Formed Parentheses | Part - 1

Efficient Search in 2D Sorted Array: Find an Element

Determine If a String is Palindrome

Find two Missing Numbers in a Sequence of Consecutive Numbers

Find a Missing Number From a Sequence of Consecutive Numbers