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SCHOOL (2)
BASIC (21)
EASY (57)
MEDIUM (43)
HARD (3)
- Reverse a linked list
- Pairwise swap elements of a linked list
- Node at a given index in linked list
- Remove duplicates from an unsorted linked list
- Split a Linked List into two halves
- Inorder Traversal
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Maximum Width of Tree
- Height of Binary Tree
- Balanced Tree Check
- Kth from End of Linked List
- Middle of a Linked List
- Check If Circular Linked List
- Left View of Binary Tree
- Delete Middle of Linked List
- Remove Duplicates from a Sorted Linked List
- Postorder Traversal
- Reverse Level Order Traversal
- Stack using Linked List
- Identical Trees
- Root to leaf path sum
- Binary Search
- Run Length Encoding
- Level Order Line by Line
- BST Keys in a Range
- Remove every k'th node
- Josephus problem
- Delete in a Singly Linked List
- Kth largest element in BST
- Intersection of Two Linked Lists
- Symmetric Tree
- Leaf under budget
- Maximum Pairwise Computed Value
- Sum of Leaf Nodes
- Sum of Leaf Nodes at Min Level
- Missing in Array
- Pairs of equals Sum
- Pairs which are Divisible by 4
- Maximum AND Value
- Next greater number set digits
- Search in a Row-Column sorted matrix
- 1[0]1 Pattern Count
- Remaining String
- Jumping Caterpillars
- Two Sum - Pair with Given Sum
- Min Manipulations to make Strings Anagram
- Maximum number of zeroes
- Print an array in Pendulum Arrangement
- Four Elements
- Swap two nibbles in a byte
- Palindrome
- Game of Nim
- Carry counter
- Sum of all prime numbers between 1 and n
- Overlapping rectangles
- Print Linked List
- Find Length of Linked List
- Size of Binary Tree
- Count Leaves in Binary Tree
- Queue using Linked List
- Replace all 0's with 5
- Preorder Traversal
- Linked List Insertion At End
- Anagram of String
- Circular Linked List Traversal
- Is Linked List Length Even?
- longest substring containing '1'
- Alternates in an Array
- Bit Difference
- Array Search
- Change the string
- String with numbers at its end
- Rotate Array by One
- Rotating an Array
- Find the fine
- Check if the door is open or closed
- Sorting Elements of an Array by Frequency
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Detect Loop in linked list
- Check for BST
- Bottom View of Binary Tree
- Delete without head pointer
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Merge two sorted linked lists
- Connect Nodes of Levels
- Flattening a Linked List
- LCA in Binary Tree
- Largest subarray with 0 sum
- Check if subtree
- Remove loop in Linked List
- Palindrome Linked List
- Delete keys in a Linked list
- Count distinct elements in every window
- Find triplets with zero sum
- Top View of Binary Tree
- k-th Smallest in BST
- Level order traversal
- Peak element
- Union of Two Linked Lists
- Counting elements in two arrays
- Vertical sum
- Mirror of a given node
- Isomorphic Trees
- Children Sum in a Binary Tree
- Count Number of SubTrees
- Smallest Positive Missing
- Kadane's Algorithm
- Count Inversions
- Triplet Sum in Array
- Next Greater Element
- K Sized Subarray Maximum
- Sort 0s, 1s and 2s
- Next Smaller Element
- Permutations of a String
- Exit Point in a Matrix
- Finding Profession