Name

Tathagat Chaurasiya

Rank in Institute

#7

Courses Attended

Campus Ambassador

Overall Coding Score: 1668

Monthly Coding Score: 0

Weekly Coding Score: 0

- Reverse a linked list
- Merge 2 sorted linked list in reverse order
- Merge Sort
- Quick Sort
- K distance from root
- Mirror Tree
- Two Mirror Trees
- Maximum Width of Tree
- Diameter of Binary Tree
- Transform to Sum Tree
- Queue using two Stacks
- DFS of Graph
- BFS of graph
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Print all nodes that don't have sibling
- Lowest Common Ancestor in a BST
- Odd even level difference
- Root to leaf paths sum
- Level order traversal
- Merge Sort for Linked List
- Convert Ternary Expression to Binary Tree
- Union of Two Linked Lists
- Level of a Node in Binary Tree
- Maximum path sum
- XOR of a given range
- Full binary tree
- Symmetric Tree
- Huffman Decoding
- Children Sum Parent
- Sum of Leaf Nodes
- Sum of Leaf Nodes at Min Level
- Number of Unique Paths
- Print Pattern
- Count Occurences of Anagrams
- Reverse words in a given string
- Spirally traversing a matrix
- Element that appears once where every element occurs twice
- Count distinct pairs with difference k
- Squares in Reactangle
- Possible paths
- Search in a matrix
- 0 - 1 Knapsack Problem
- Maximize The Cut Segments
- Maximize Dot Product
- Decode the pattern
- Smallest subarray with sum greater than x
- Longest Palindromic Subsequence
- Four Elements
- Sum equals to Sum
- Carry counter
- Count all possible paths from top left to bottom right
- Shortest Common Supersequence
- Nth item through sum
- Geek and its Colored Strings
- Transform the array
- Min Manipulations to make Strings Anagram
- Sum of two large numbers
- Pairs which are Divisible by 4
- Nearest multiple of 10
- Check if array contains contiguous integers with duplicates allowed
- Maximum height of the staircase
- Ease the Array

- 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
- Range Minimum Query
- The Celebrity Problem
- Topological sort
- Vertical Traversal of Binary Tree
- Merge K sorted linked lists
- Find the number of islands
- Get minimum element from stack
- Serialize and Deserialize a Binary Tree
- Circular tour
- Wildcard Pattern Matching
- Max rectangle
- Make Binary Tree From Linked List
- Generate IP Addresses
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Clone a Binary Tree
- Remove loop in Linked List
- Implementing Dijkstra | Set 1 (Adjacency Matrix)
- Max length chain
- Minimum Spanning Tree
- Largest BST
- Interleaved Strings
- LRU Cache
- Box Stacking
- Count Palindromic Subsequences
- Multiply two strings
- Minimum Swaps to Sort
- Strongly Connected Components (Kosaraju's Algo)
- Rat in a Maze Problem
- Bipartite Graph
- Number of root to leaf paths
- Find the Closest Element in BST
- Delete keys in a Linked list
- Merge two BST 's
- Merge k Sorted Arrays
- Length of longest palindrome in linked list
- Print Nodes having K leaves
- Top View of Binary Tree
- Smallest range in K lists
- k-th smallest element in BST
- Polynomial Addition
- Euler Circuit in a Directed Graph
- Euler circuit and Path
- Binary Tree to CDLL
- Find a pair with given target in BST
- Occurences of 2 as a digit
- Construct expression tree
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Construct tree from Inorder and LevelOrder
- Node at distance
- Mirror of a given node
- Pairs violating BST property
- Maximum path sum from any node
- Leaves to DLL
- Largest Independent Set Problem
- Construct Tree from Preorder Traversal
- Construct a Full Binary Tree
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Path Count in Directed Graph
- C++ Friend function
- Swap Kth nodes from ends
- Maximum sum of Non-adjacent nodes
- Smallest Positive missing number
- Unique BST's
- Unit Area of largest region of 1's
- Sorting Elements of an Array by Frequency
- Longest consecutive subsequence
- Case-specific Sorting of Strings
- Count ways to N'th Stair(Order does not matter)
- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Complement
- Rank The Permutations
- Excel Sheet | Part - 1
- Maximum Sub Array
- Print Diagonally
- Overlapping Intervals
- Maximum Index
- Equal Sum
- 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
- Count of n digit numbers whose sum of digits equals to given sum
- Edit Distance
- Magic Triplets
- Maximum Rectangular Area in a Histogram
- Longest Span with same Sum in two Binary arrays
- Consecutive 1's not allowed
- Count of Subarrays
- Longest Even Length Substring
- Path in Matrix
- Trapping Rain Water
- String formation from substring
- Case-specific Sorting of Strings
- Rank of Matrix
- Sum of bit differences
- Subset Sum Problem
- Maximize The Array
- Factorials of large numbers
- Number of Coins
- Minimum Platforms
- Number following a pattern
- Find Prime numbers in a range
- Stock buy and sell
- Largest Number formed from an Array
- Number of paths in a matrix with k coins
- Possible words from Phone digits
- Jumping Numbers
- Longest Palindrome in a String
- Modular Exponentiation for large numbers
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Relative Sorting
- Black and White
- Maximum of all subarrays of size k
- Largest square formed in a matrix
- Row with max 1s
- Boolean Matrix Problem
- Count Integral Points
- Sorting Elements of an Array by Frequency
- Design a tiny URL or URL shortener
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Special Keyboard
- Number of ways
- Dyck Path
- Minimum Cost of ropes
- Sum of Query II
- Form a palindrome
- Inversion of array
- Preorder to Postorder
- Length of the longest substring
- Smallest number on left
- Longest consecutive subsequence
- Largest subsquare surrounded by ‘X’
- Maximum Sum Path in Two Arrays
- Stock span problem
- Convert an array to reduced form
- M-Coloring Problem
- Minimum steps to get desired array
- Subsequence matching
- Dimensions of Rectangle
- Handshakes
- Tic-Tac-Toe
- Number to words
- Palindromic Array
- Betting game
- Unique partitions
- Is Binary Number Multiple of 3
- Possible groups
- Preorder Traversal and BST
- Card Rotation
- Search Pattern
- Longest Arithmetic Progression
- Jumbled Strings
- Palindromic Strings
- Max possible amount
- Cost of Sweets
- Bleak Numbers
- Crazy Equations
- Maximum Profit
- Digit multiplier
- Circle of strings
- Build the smallest
- Your Social Network
- Largest number in K swaps
- Special Matrix
- Minimize the heights
- Next larger element
- Taking 1 out of 3 consecutives
- X Total Shapes
- Total Decoding Messages
- Unique BST's
- Distinct Transformations
- Subsets
- Matchsticks game
- Combination Sum
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- Kth smallest element
- Divisible by 8
- Transform String
- Maximum calorie
- Prime Factors and their Powers
- Longest Common Substring
- Count Palindrome Sub-Strings of a String
- Largest Divisibility Test
- Check if a string is repetition of its substring of k-length
- Rotate and delete
- Negative weight cycle
- Hamiltonian Path
- Shortest Source to Destination Path
- Divisibility tree
- Number of Palindromic paths in a Matrix
- Trie | (Insert and Search)
- Partition a number into two divisible parts
- Knight Walk
- Find all four sum numbers
- Substring - Subsequence problem
- Word Boggle
- Form coils in a matrix
- Print leaf nodes from preorder traversal of BST
- Distance of nearest cell having 1
- Is Sudoku Valid
- Find whether path exist
- Largest prime factor
- Check Mirror in N-ary tree
- Unit Area of largest region of 1's
- Rearrange characters
- Express as sum of power of natural numbers
- First non-repeating character in a stream
- Count subsequences of type a^i b^j c^k
- Stepping Numbers
- Convex Hull
- Count in array
- K
^{th}largest element in a stream - Water Overflow
- Zero Sum Subarrays
- Magnet Array Problem
- Smallest window in a string containing all the characters of another string
- Smallest distinct window
- Minimum number of steps to reach a given number.
- Floyd Warshall
- Huffman Encoding
- Nearly Sorted Algorithm
- Infix to Postfix
- Optimal binary search tree
- Smallest Absolute Difference
- Smallest Positive missing number
- Longest Bitonic subsequence
- Mobile numeric keypad
- Little Murph and knots
- Reverse Spiral Form of Matrix
- Pyramid form
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Minimum Time
- Word Wrap
- Perfect Sum Problem
- Array Pair Sum Divisibility Problem
- Job Sequencing Problem
- Top k numbers in a stream
- Page Faults in LRU
- Rotten Oranges
- Modify array to maximize sum of adjacent differences
- Probability of Knight
- LCS of three strings
- Two water Jug problem
- Longest Common Prefix in an Array
- Minimum cost to fill given weight in a bag
- Steps by Knight
- Median In a Row-Wise sorted Matrix
- In First But Second
- Row with minimum number of 1's
- Numbers with alternative 1's
- Coins and Game
- Brackets in Matrix Chain Multiplication
- Matrix Chain Multiplication
- Maximum Tip Calculator
- Alternate Vowel and Consonant String
- Count divisors of product of array elements
- Print N-bit binary numbers having more 1’s than 0’s
- Next higher palindromic number using the same set of digits
- Series with largest GCD and sum equals to N
- Biconnected Graph
- Pizza Mania
- Killing Spree
- Number of subarrays with maximum values in given range
- Longest subarray with sum divisible by K
- Subarrays with equal 1s and 0s
- Make Matrix Beautiful
- Longest Sub-Array with Sum K
- The Tiny Miny
- Letters Collection
- Hopscotch
- Marks of PCM
- String Conversion
- Geek and Strings
- Container with most water
- Buying Vegetables
- The Painter's Partition Problem
- Maximize the sum of selected numbers from an array to make it empty
- Lucky alive person in a circle
- Rat Maze With Multiple Jumps
- Construct binary palindrome by repeated appending and trimming

- Reorder List
- Binary Tree to DLL
- AVL Tree Insertion
- Longest Palindromic Substring in Linear Time
- Alien Dictionary
- AVL Tree Deletion
- Fixing Two nodes of a BST
- Number of Turns in Binary Tree
- Minimum Points To Reach Destination
- Minimum sum partition
- Maximum of minimum for every window size
- Merge Without Extra Space
- Next Smallest Palindrome
- Find sum of different corresponding bits for all pairs
- Return two prime numbers
- A Simple Fraction
- Ugly Numbers
- Largest rectangle of 1’s with swapping of columns allowed
- Path of greater than equal to k length
- Boolean Parenthesization
- Word Break - Part 2
- Minimum Cost Path
- N-Queen Problem
- Solve the Sudoku
- Find median in a stream
- Travelling Salesman Problem
- Very Tough Problem
- Distinct palindromic substrings
- Similar expressions
- Convert to Strictly increasing array
- Phone directory
- Count the subarrays having product less than k
- Closest Palindrome