Name

HuHu

Rank in Institute

#1

Courses Attended

Overall Coding Score: 1116

Monthly Coding Score: 240

Weekly Coding Score: 0

- Pythagorean Triplet
- Majority Element
- Missing number in array
- Number of paths
- Bit Difference
- Remove character
- Sum of dependencies in a graph
- Find the element that appears once in sorted array
- Check set bits
- Twice counter
- Print first n Fibonacci Numbers
- Perfect Square String
- Height of Heap
- Print Linked List elements
- Count nodes of linked list
- Node at a given index in linked list
- Size of Binary Tree
- Inorder Traversal
- Count Leaves in Binary Tree
- Height of Binary Tree
- Finding middle element in a linked list
- Circular Linked List
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Preorder Traversal
- C++ STL | Set 1 (vector)
- C++ STL | Set 4 (stack)
- C++ STL | Set 5 (queue)
- Search a node in BST
- Linked List Insertion
- Minimum element in BST
- Circular Linked List Traversal
- Sum of Binary Tree
- Count Non-Leaf Nodes in Tree

- Number of Unique Paths
- Wave Array
- Rotation
- Squares in N*N Chessboard
- Count Occurences of Anagrams
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Next greater number set digits
- Segregate even and odd nodes in a Linked List
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Maximum sum increasing subsequence
- Array to BST
- Max Sum without Adjacents
- Reach the Nth point
- Leaders in an array
- Count number of hops
- Inorder Traversal and BST
- Reach a given score
- Count the Zeros
- 0 - 1 Knapsack Problem
- Cutted Segments
- Element appearing once
- Equilibrium point
- Floor in a Sorted Array
- Pairs with specific difference
- Knapsack with Duplicate Items
- Flood fill Algorithm
- Gold Mine Problem
- Minimum Operations
- Palindromic patitioning
- Longest Palindromic Subsequence
- Paths to reach origin
- Count all possible paths from top left to bottom right
- Minimum Deletions
- Shortest Common Supersequence
- Minimum Number in a sorted rotated array
- Maximum sum Problem
- Longest Repeating Subsequence
- Stickler Thief
- Even Fibonacci Numbers Sum
- C++ Matrix Rotation by 180 degree
- Reverse a linked list
- Delete N nodes after M nodes of a linked list
- Rotate a Linked List
- Pairwise swap elements of a linked list
- Given a linked list of 0s, 1s and 2s, sort it.
- Add two numbers represented by linked lists
- Add 1 to a number represented as linked list
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Remove duplicates from an unsorted linked list
- Sorted insert for circular linked list
- Split a Circular Linked List into two halves
- Reverse a Doubly Linked List
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Two Mirror Trees
- Maximum Width of Tree
- Diameter of Binary Tree
- Check for Balanced Tree
- Nth node from end of linked list
- Left View of Binary Tree
- Delete Middle of Linked List
- Merge two sorted linked lists
- Sum Tree
- Decimal Equivalent of Binary Linked List
- Transform to Sum Tree
- Intersection of two sorted Linked lists
- Find Transition Point
- Remove duplicate element from sorted Linked List
- Level order traversal in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Root to leaf path sum
- Print all nodes that don't have sibling
- Absolute List Sorting
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Level order traversal Line by Line
- Print BST elements in given range
- Minimum Depth of a Binary Tree
- Odd even level difference
- Equilibrium index of an array
- Leaf at same level
- Distinct occurrences
- Expression Tree
- Check if Linked List is Palindrome
- Kth largest element in BST
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Sort a stack
- Print Common Nodes in BST
- Level order traversal
- Peak element
- Inorder Successor in BST
- Delete nodes greater than k
- Index Of an Extra Element
- Merge Sort for Linked List
- Convert Ternary Expression to Binary Tree
- Union of Two Linked Lists
- Intersection of Two Linked Lists
- Ancestors in Binary Tree
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Root to Leaf Paths
- Maximum path sum
- Max and min element in Binary Tree
- Perfect Binary Tree
- Full binary tree
- Modify Linked List-1
- Symmetric Tree
- Construct Tree from Inorder & Preorder
- Construct BST from Postorder
- Vertical sum
- Count Pairs whose sum is equal to X
- Check if Tree is Isomorphic
- Predecessor and Successor
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Median of BST
- Normal BST to Balanced BST
- Leaf under budget
- Remove Half Nodes
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Nodes at Odd Levels
- Closest Neighbor in BST
- Sum of the Longest Bloodline of a Tree
- Check if two Nodes are Cousins
- ZigZag Tree Traversal
- Sum of Leaf Nodes at Min Level
- Learn to Comment
- Reverse words in a given string

- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Excel Sheet | Part - 1
- Maximum Sub Array
- Print Diagonally
- Overlapping Intervals
- Next Permutation
- Longest Increasing Subsequence
- Parenthesis Checker
- Longest Common Subsequence
- Minimum number of jumps
- Count ways to reach the n'th stair
- Count ways to N'th Stair(Order does not matter)
- Egg Dropping Puzzle
- Edit Distance
- Maximum Rectangular Area in a Histogram
- Consecutive 1's not allowed
- Longest Even Length Substring
- Path in Matrix
- Trapping Rain Water
- Subset Sum Problem
- Number of Coins
- Find Prime numbers in a range
- Number of paths in a matrix with k coins
- Longest Palindrome in a String
- Rearrange Array Alternately
- Maximum of all subarrays of size k
- Largest square formed in a matrix
- Row with max 1s
- Boolean Matrix Problem
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Special Keyboard
- Number of ways
- Sum of Query II
- Form a palindrome
- Inversion of array
- Preorder to Postorder
- Maximum length Bitonic Subarray
- Length of the longest substring
- Smallest number on left
- Stock span problem
- M-Coloring Problem
- Is Binary Number Multiple of 3
- Preorder Traversal and BST
- Max possible amount
- Bleak Numbers
- Maximum Profit
- Next larger element
- X Total Shapes
- Total Decoding Messages
- Unique BST's
- Subsets
- Combination Sum
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- Longest Common Substring
- Count Palindrome Sub-Strings of a String
- Snake and Ladder Problem
- Recursively remove all adjacent duplicates
- Shortest Source to Destination Path
- Number of Palindromic paths in a Matrix
- Replace O's with X's
- Knight Walk
- Print leaf nodes from preorder traversal of BST
- Is Sudoku Valid
- Find whether path exist
- Unit Area of largest region of 1's
- First non-repeating character in a stream
- Count subsequences of type a^i b^j c^k
- K
^{th}largest element in a stream - Zero Sum Subarrays
- Infix to Postfix
- Longest Bitonic subsequence
- Maximum sum Rectangle
- Perfect Sum Problem
- Rotten Oranges
- Steps by Knight
- Brackets in Matrix Chain Multiplication
- Matrix Chain Multiplication
- Save Gotham!
- Optimal Strategy For A Game
- Given a linked list, reverse alternate nodes and append at the end
- Reverse a Linked List in groups of given size.
- Delete nodes having greater value on right
- Count BST nodes that lie in a given range
- Check for BST
- Tree from Postorder and Inorder
- Bottom View of Binary Tree
- Delete without head pointer
- Intersection Point in Y Shapped Linked Lists
- Add all greater values to every node in a BST
- Construct Binary Tree from Parent Array
- Connect Nodes at Same Level
- Clone a linked list with next and random pointer
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Boundary Traversal of binary tree
- Delete a node from BST
- Detect cycle in a directed graph
- Detect cycle in an undirected graph
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- The Celebrity Problem
- Topological sort
- Print a Binary Tree in Vertical Order
- Find the number of islands
- Get minimum element from stack
- Serialize and Deserialize a Binary Tree
- Wildcard Pattern Matching
- Max rectangle
- Make Binary Tree From Linked List
- Check if subtree
- Extreme nodes in alternate order
- Remove loop in Linked List
- Max length chain
- Largest BST
- Interleaved Strings
- Count Palindromic Subsequences
- Rat in a Maze Problem
- Number of root to leaf paths
- Find the Closest Element in BST
- Pots of Gold Game
- Delete keys in a Linked list
- Merge two BST 's
- Length of longest palindrome in linked list
- Print Nodes having K leaves
- Duplicate subtree in Binary Tree
- Top View of Binary Tree
- k-th smallest element in BST
- Binary Tree to CDLL
- Find a pair with given target in BST
- Construct expression tree
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Node at distance
- Pairs violating BST property
- Maximum path sum from any node
- Leaves to DLL
- Duplicate Subtrees
- Construct Tree from Preorder Traversal
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Swap Kth nodes from ends
- Maximum sum of Non-adjacent nodes
- Unique BST's
- Unit Area of largest region of 1's
- Sorting Elements of an Array by Frequency
- Count ways to N'th Stair(Order does not matter)

- Minimum Points To Reach Destination
- Minimum sum partition
- Maximum of minimum for every window size
- Find sum of different corresponding bits for all pairs
- Return two prime numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Word Break - Part 2
- Minimum Cost Path
- N-Queen Problem
- Solve the Sudoku
- Find median in a stream
- Travelling Salesman Problem
- Max Circular Subarray Sum
- Distinct palindromic substrings
- Longest Zig-Zag Sub Sequence
- Queries on a Matrix
- Reorder List
- Binary Tree to DLL
- AVL Tree Insertion
- Partition array to K subsets
- AVL Tree Deletion
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Solve the Sudoku