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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
106

Reverse The Doubly Linked List

Medium % 0
105

Swap Kth Node from the front with the Kth Node from the End

Medium % 0
103

Delete X Nodes After Y Nodes In a Linked List

Beginner % 0
102

Merge Sort in a Linked list

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
98

Construct Binary Search Tree from a given Preorder Traversal Using Stack (Without Recursion)

Hard % 0
97

Construct Binary Search Tree from a given Preorder Traversal using Recursion

Hard % 0
94

Depth First Search/Traversal in Binary Tree

Beginner % 0
93

Inorder Predecessor and Successor in Binary Search Tree

Hard % 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 the subarray with sum to a Given Value.

Medium % 0
89

In an Array, find the Smallest Subarray with Sum Greater than the Given Value

Medium % 0
88

Rearrange Positive and Negative Elements at Alternate Positions in an Array In O(1) Extra Space

Hard % 0
87

Find intersection between Two Sorted Arrays.

Beginner % 0
86

Find Kth Smallest or Largest element in an Array.

Medium % 0
85

Given an array arrA[], find the maximum j – i such that arr[j] > arr[i].

Medium % 0
84

Find All Elements in an Array which appears more than N/K times, N is Array Size and k is a Number.

Hard % 0
83

Search an Element in a Rotated Sorted Array

Medium % 0
79

Find the Distance between Two Nodes of a Binary Tree.

Hard % 0
78

Find The Distance From Root To Given Node of a Binary Tree.

Medium % 0
77

Construct a binary tree from given Inorder and Postorder Traversal

Hard % 0
74

Lowest Common Ancestor in a Binary Tree (Not Binary Search Tree).

Hard % 0
73

Lowest Common Ancestor in a Binary Search Tree.

Medium % 0
72

Make a Binary Tree from Given Inorder and Preorder Traversal

Hard % 0

Reverse The Doubly Linked List

Swap Kth Node from the front with the Kth Node from the End

Delete X Nodes After Y Nodes In a Linked List

Merge Sort in a Linked list

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

Construct Binary Search Tree from a given Preorder Traversal Using Stack (Without Recursion)

Construct Binary Search Tree from a given Preorder Traversal using Recursion

Depth First Search/Traversal in Binary Tree

Inorder Predecessor and Successor in Binary Search Tree

Check if Array Contains All Elements Of Some Given Range

Check if Array is Consecutive Integers

Find the subarray with sum to a Given Value.

In an Array, find the Smallest Subarray with Sum Greater than the Given Value

Rearrange Positive and Negative Elements at Alternate Positions in an Array In O(1) Extra Space

Find intersection between Two Sorted Arrays.

Find Kth Smallest or Largest element in an Array.

Given an array arrA[], find the maximum j – i such that arr[j] > arr[i].

Find All Elements in an Array which appears more than N/K times, N is Array Size and k is a Number.

Search an Element in a Rotated Sorted Array

Find the Distance between Two Nodes of a Binary Tree.

Find The Distance From Root To Given Node of a Binary Tree.

Construct a binary tree from given Inorder and Postorder Traversal

Lowest Common Ancestor in a Binary Tree (Not Binary Search Tree).

Lowest Common Ancestor in a Binary Search Tree.

Make a Binary Tree from Given Inorder and Preorder Traversal