- Print Linked List elements
- Count nodes of linked list
- Delete node in Doubly 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 Queue using Linked List
- Square root
- Count zeros in a sorted matrix
- Convert to Roman No
- Preorder Traversal
- Search a node in BST
- Find triplets with zero sum
- Linked List Insertion
- Minimum element in BST
- Circular Linked List Traversal
- Linked List Length Even or Odd?
- Delete Alternate Nodes
- Identical Linked Lists
- Modular Node
- Find n/k th node in Linked list
- Queue Reversal
- Sum of Binary Tree
- Insert in Middle of Linked List
- longest substring containing '1'
- Count Non-Leaf Nodes in Tree
- Java Collections | Set 9 (Queue)
- Binary String
- LCM And GCD
- Power of 2
- Doubling the value
- Permutations of a given string
- Missing number in array
- Number of paths
- Count total set bits
- Number is sparse or not
- Greater on right side
- Immediate Smaller Element
- Union of two arrays
- k largest elements
- Check if a number is power of another number
- Maximum money
- Ways To Tile A Floor
- Smallest number
- Rotate by 90 degree
- Set Bits
- Minimize the sum of product
- Sum of dependencies in a graph
- Sort in specific order
- Check if string is rotated by two places
- Check if divisible by 4
- Find first set bit
- Check for subsequence
- Find first repeated character
- Does array represent Heap
- Arranging the array
- First element to occur k times
- Check whether K-th bit is set or not
- Extract Maximum
- Uncommon characters
- Sum of numbers in string
- Find Smallest Missing in Sorted
- Rightmost different bit
- Check set bits
- Quick Left Rotation
- Toggle bits given range
- Maximum Integer Value
- Find the Highest number
- Closest Number
- Positive and negative elements
- Find the closest number
- Message Spreading
- Inverse Permutation
- Ishaan's Internship
- Ishaan Loves Chocolates
- Gray Code
- Height of Heap

Name

Rohit Mazumder

Institution

Rank in Institute

#1

Courses Attended

Campus Ambassador

Overall Coding Score: 2271

Monthly Coding Score: 0

Weekly Coding Score: 0

- Reverse a linked list
- Occurence of an integer in 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
- Rearrange a linked list
- Add 1 to a number represented as linked list
- Compare two linked lists
- Merge 2 sorted linked list in reverse order
- Linked List in Zig-Zag fashion
- Detect Loop in linked list
- Remove duplicates from an unsorted 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
- Heap Sort
- 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
- Find Transition Point
- Queue using two Stacks
- Remove duplicate element from sorted Linked List
- Stack using two queues
- Level order traversal in spiral form
- Reverse Level Order Traversal
- Reverse alternate levels of a perfect binary tree
- Insert a node in a BST
- 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
- Postorder traversal from given Inorder and Preorder traversals
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Binary Heap Operations
- Level order traversal Line by Line
- Print BST elements in given range
- Minimum Depth of a Binary Tree
- Odd even level difference
- Binary Tree to BST
- K-Palindrome
- Max sum in the configuration
- Leaf at same level
- Is Binary Tree Heap
- Validate an IP Address
- Distinct occurrences
- Josephus problem
- You and your books
- Expression Tree
- Check if Linked List is Palindrome
- Find perimeter of shapes
- Check whether BST contains Dead End
- Delete a Node in Single Linked List
- Kth largest element in BST
- Check if two strings are k-anagrams or not
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Sort a stack
- Longest consecutive sequence in Binary tree
- Print Common Nodes in BST
- Level order traversal
- Peak element
- Inorder Successor in BST
- Delete nodes greater than k
- Merge Sort for Linked List
- Convert Ternary Expression to Binary Tree
- 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
- Counting elements in two arrays
- Reverse a string using Stack
- XOR of a given range
- Full binary tree
- Modify Linked List-1
- Triplet with 0 sum in BST
- Symmetric Tree
- Construct Tree from Inorder & Preorder
- Construct BST from Postorder
- Merge Lists Alternatingly
- Vertical sum
- Next Right Node
- Count Pairs whose sum is equal to X
- Insert in Sorted way in a Sorted DLL
- Check if Tree is Isomorphic
- Depth of node
- pth common ancestor in BST
- Predecessor and Successor
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Deletion and Reverse in Linked List
- Change of Key in BST
- Median of BST
- Normal BST to Balanced BST
- Leaf under budget
- Linked List Matrix
- Reverse First K elements of Queue
- Remove Half Nodes
- Height of Spiral Tree
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Deletion in a Binary Tree
- Nodes at Odd Levels
- Closest Neighbor in BST
- Brothers From Different Roots
- Sum of the Longest Bloodline of a Tree (Sum of nodes on the longest path from root to leaf node)
- Exchange the Leaf Nodes
- Kth Ancestor in a Tree
- Check if two Nodes are Cousins
- ZigZag Tree Traversal
- Sum of Leaf Nodes at Min Level
- Tilt of Binary Tree
- Move all zeros to the front of the linked list
- Vertical Width of a Binary Tree
- Rotate doubly Linked List
- Java Collections | Set 7 (LinkedList)
- Start Coding - Java
- The New Line - Java
- Data Types - Java
- Taking input - Java
- Learn to Comment - Java
- nextLine and next
- Precise Fomat - Java
- logical Operators - Java
- Bitwise Operators - Java
- Even Odd - Java
- For Loop- primeCheck - Java
- While loop- printTable - Java
- Step by Step Condition - Java
- Count Odd Even - Java
- The Pattern Matcher - Java
- Need Some Change - Java
- Almost Equal -Java
- Count the Specials - Java
- Even Subsets - Java
- Matrix Interchange - Java
- Consonants and Vowels check - Java
- Predict the Column - Java
- Xoring and Clearing - Java
- Pair in Java
- Maximum Area Rectangle
- Sum of Big Integers
- BigInteger Multiply
- BigInteger mod
- ArrayList Operation
- Operations on ArrayList
- Stack Operations
- Queue Operations
- Get min at pop
- Frequencies of Limited Range Array Elements
- Anagram
- Number of Unique Paths
- Print Pattern
- Rotation
- Maximize Toys
- Minimum number of Coins
- First Repeating Element
- Reverse words in a given string
- Count Substrings
- Move all zeroes to end of array
- Activity Selection
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Finding Number
- Maximum value in a bitonic array
- Finding Position
- Single Number
- Segregate even and odd nodes in a Linked List
- Longest Distinct characters in string
- Maximum Product Subarray
- N meetings in one room
- Remove Duplicates
- Addition of submatrix
- Maximum sum increasing subsequence
- Array to BST
- Key Pair
- Reverse Bits
- Reach the Nth point
- Adjacents are not allowed
- Swap all odd and even bits
- Count number of hops
- Count pairs with given sum
- Inorder Traversal and BST
- Segregate 0s and 1s
- Triplet Sum in Array
- Three Great Candidates
- Reach a given score
- Minimum element in a sorted and rotated array
- Search in a matrix
- Number Of Open Doors
- Chinky and diamonds
- Shop in Candy Store
- Largest number possible
- Generate binary string
- Missing element of AP
- Count the Zeros
- 0 - 1 Knapsack Problem
- Trail of ones
- Skip the work
- Valid Substring
- Count the Reversals
- Maximize The Cut Segments
- Lexicographically previous permutation
- Game of Death in a circle
- Raju and coins
- Largest number with given sum
- Letter Writer
- Optimal walk
- Count Increasing Subsequences
- Least Prime Factor
- Choose and Swap
- Adding Ones
- Pairs with specific difference
- Count Pairs in an Array
- Min sum formed by digits
- Chocolate Distribution Problem
- Binary Tree K level sum
- Exit Point in a Matrix
- Maximum Sum Bitonic Subsequence
- 1[0]1 Pattern Count
- Knapsack with Duplicate Items
- Let's Play!!!
- Sum of k smallest elements in BST
- Flood fill Algorithm
- Friends Pairing Problem
- Max sum in sub-arrays
- Gold Mine Problem
- Love For The Twins
- Sum of all substrings of a number
- Minimum Operations
- Find all pairs with a given sum
- Check if frequencies can be equal
- Shortest distance in infinite tree
- Temple Offerings
- Excel Sheet | Part - 2
- Largest Fibonacci Subsequence
- Theft at World Bank
- Increasing Sub Sequence
- Longest Palindromic Subsequence
- Fractional Knapsack
- Evaluation of Postfix Expression
- Recursive sequence
- Rod Cutting
- Array Subset of another array
- Divisible by 5 or not-1
- Paths to reach origin
- Get Minimum Squares
- Group Anagrams Together
- Find the closest prime number to a given number
- Second most repeated string in a sequence
- Count all possible paths from top left to bottom right
- Minimum Deletions
- Shortest Common Supersequence
- Minimum Number in a sorted rotated array
- Find distinct elements
- Count the number of ways to tile the floor of size n x m using 1 x m size tiles
- Minimum insertions to sort an array
- Minimum number of deletions and insertions.
- Minimum number of deletions to make a sorted sequence
- Minimum steps to minimize n as per given condition
- Minimum number of deletions.
- Longest alternating subsequence
- Count of strings that can be formed using a, b and c under given constraints
- Longest subsequence-1
- Maximum sum Problem
- Find number of times a string occurs as a subsequence
- Minimum Cost To Make Two Strings Identical
- High-effort vs. Low-effort
- Longest Repeating Subsequence
- Stickler Thief
- Sum of Lengths of Non-Overlapping SubArrays
- Common Subsequence
- Count the triplets
- Star elements
- Min Manipulations to make Strings Anagram
- Chicks in a Zoo
- Special Numbers
- Check if a Integer is power of 8 or not
- Geek and its Game of Coins
- Prime number of set bits
- Find if string is K-Palindrome or not
- Longest common prefix
- Find winner of the Game of Nim
- Sum of all divisors from 1 to n
- Maximum distinct elements after removing K elements
- Maximum difference of zeros and ones in binary string
- Reorganize The Array
- Count ways to express N as the sum of 1,3 and 4
- Print Binary Tree levels in sorted order
- Check if a number is divisible by 8
- Hungry Pizza Lovers
- Ishaan and Sticks
- Maximum sum of increasing order elements from n arrays
- Print Bracket Number
- Smallest number with sum of digits as N and divisible by 10^N
- Minimal moves to form a string
- Save Ironman

- 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
- Quick Sort on Linked List
- 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
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- Range Minimum Query
- The Celebrity Problem
- Vertical Traversal of Binary Tree
- Merge K sorted linked lists
- Get minimum element from stack
- Serialize and Deserialize a Binary Tree
- Circular tour
- Max rectangle
- Make Binary Tree From Linked List
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Clone a Binary Tree
- Remove loop in Linked List
- Max length chain
- Largest BST
- Interleaved Strings
- Box Stacking
- Count Palindromic Subsequences
- Multiply two strings
- Rat in a Maze Problem
- 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
- Duplicate subtree in Binary Tree
- Top View of Binary Tree
- k-th smallest element in BST
- Polynomial Addition
- Merge Sort on Doubly Linked List
- Binary Tree to CDLL
- Find a pair with given target in BST
- Occurences of 2 as a digit
- Populate Inorder Successor for all nodes
- 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
- Right Sibling in Binary Tree
- Construct Tree from Preorder Traversal
- Construct a Full Binary Tree
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- C++ Friend function
- C++ Generic sort
- Operations on PriorityQueue
- Swap Kth nodes from ends
- Add two numbers represented by Linked List
- Maximum sum of Non-adjacent nodes
- Smallest Positive missing number
- Unique BST's
- Subarrays with equal 1s and 0s
- 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
- Sum Of Prime
- Excel Sheet | Part - 1
- Print Diagonally
- Overlapping Intervals
- 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
- Edit Distance
- Maximum Rectangular Area in a Histogram
- Longest Span with same Sum in two Binary arrays
- Min Coin
- 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
- Number of Coins
- Minimum Platforms
- Number following a pattern
- Find Prime numbers in a range
- Largest Number formed from an Array
- Possible words from Phone digits
- 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
- 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
- Number of ways
- Minimum Cost of ropes
- Power of Largest Prime
- Form a palindrome
- Inversion of array
- Preorder to Postorder
- Length of the longest substring
- Smallest number on left
- Longest consecutive subsequence
- Stock span problem
- Convert an array to reduced form
- Minimum steps to get desired array
- Subsequence matching
- Dimensions of Rectangle
- Number to words
- Palindromic Array
- Unique partitions
- Is Binary Number Multiple of 3
- Preorder Traversal and BST
- Card Rotation
- Longest Arithmetic Progression
- Subsets with XOR value
- Jumbled Strings
- Palindromic Strings
- Max possible amount
- Bleak Numbers
- Coin Piles
- Maximum XOR subset
- Maximum Profit
- Nodes at even distance
- Your Social Network
- Largest number in K swaps
- Next larger element
- Taking 1 out of 3 consecutives
- X Total Shapes
- Total Decoding Messages
- Unique BST's
- Distinct Transformations
- Matchsticks game
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- Kth smallest element
- Divisible by 8
- Maximum calorie
- 7 Segment Display
- Longest Common Substring
- Count Palindrome Sub-Strings of a String
- Check if a string is repetition of its substring of k-length
- Count the Number of Full Binary Trees
- Tricky Subset Problem
- Shortest Source to Destination Path
- Divisibility tree
- Trie | (Insert and Search)
- Replace O's with X's
- Knight Walk
- Substring - Subsequence problem
- Count of AP Subsequences
- Word Boggle
- Print leaf nodes from preorder traversal of BST
- Find whether path exist
- Check Mirror in N-ary tree
- Unit Area of largest region of 1's
- Rearrange characters
- First non-repeating character in a stream
- Count subsequences of type a^i b^j c^k
- K
^{th}largest element in a stream - Water Overflow
- Zero Sum Subarrays
- Smallest window in a string containing all the characters of another string
- Smallest distinct window
- Huffman Encoding
- Nearly Sorted Algorithm
- Infix to Postfix
- Largest Sum Subarray of Size at least K
- Longest Bitonic subsequence
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Minimum Time
- Perfect Sum Problem
- Array Pair Sum Divisibility Problem
- Job Sequencing Problem
- Top k numbers in a stream
- Page Faults in LRU
- Image Multiplication
- N Digit numbers with digits in increasing order
- Rotten Oranges
- Modify array to maximize sum of adjacent differences
- Sisters and coins
- LCS of three strings
- Minimum cost to fill given weight in a bag
- Count even length
- Steps by Knight
- Median In a Row-Wise sorted Matrix
- In First But Second
- Row with minimum number of 1's
- Pairs of Non Coinciding Points
- Nine Divisors
- Maximum bitonic subarray sum
- Biconnected Graph
- Pizza Mania
- Killing Spree
- Number of subarrays with maximum values in given range
- Count of Palindromic substrings in an Index range
- Lazy Pasha
- Longest subarray with sum divisible by K
- Subarrays with equal 1s and 0s
- Longest Sub-Array with Sum K
- Sick Pasha
- Beautiful SubSequence
- Santa Banta
- The Tiny Miny
- Letters Collection
- Sum of XOR of all pairs
- Pass the semester
- Container with most water
- Save Gotham!
- The Painter's Partition Problem
- Minimum swaps and K together
- Lucky alive person in a circle
- Smaller on Left
- Optimal Strategy For A Game

- QuickSort on Doubly Linked List
- Reorder List
- Binary Tree to DLL
- AVL Tree Insertion
- Partition array to K subsets
- Maximum subset XOR
- Longest Palindromic Substring in Linear Time
- Alien Dictionary
- AVL Tree Deletion
- Fixing Two nodes of a BST
- Number of Turns in Binary Tree
- Solve the Sudoku
- Minimum Points To Reach Destination
- Minimum sum partition
- Maximum of minimum for every window size
- Head to Tail ordering
- Merge Without Extra Space
- Next Smallest Palindrome
- Find sum of different corresponding bits for all pairs
- Return two prime numbers
- Allocate minimum number of pages
- A Simple Fraction
- Ugly Numbers
- Largest rectangle of 1’s with swapping of columns allowed
- Path of greater than equal to k length
- Nth digit of pi
- Assignment Problem
- Rohan's Love for Matrix
- Create your own Calculator
- nCr mod M | Part 1
- Number Formation
- Boolean Parenthesization
- Longest valid Parentheses
- Word Break - Part 2
- Print all LCS sequences
- Minimum Cost Path
- N-Queen Problem
- Solve the Sudoku
- Strongly connected component (Tarjans's Algo)
- Generalised Fibonacci numbers
- Find median in a stream
- Travelling Salesman Problem
- Find the Maximum Flow
- Max Circular Subarray Sum
- Minimum number of elements
- Very Tough Problem
- Distinct palindromic substrings
- Longest Zig-Zag Sub Sequence
- Next Optimal Move in Tic Tac Toe
- Similar expressions
- Convert to Strictly increasing array
- Phone directory
- Hexadecimal to decimal counter
- Numbers with one absolute difference
- Count the subarrays having product less than k
- Lets play a Game
- Joey doesn't share food
- Rachael's String Challenge
- Queries on a Matrix
- Bike Racing
- Adventure in a Maze
- Closest Palindrome
- Doctor Strange
- Kill Captain America
- Minimum number to make median X