Data Structure
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A
ajaymakvana
STREAK
48/1542
days
Longest streak/Global longest streak
Language Used
C++, Python, Java, C
Coding Score
2257
Problem Solved
847
Contest Rating
__
341 points
Contributor
341 points
Contributor
1 Point
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Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
42 submissions in current year
SCHOOL (3)
BASIC (150)
EASY (275)
MEDIUM (369)
HARD (50)
- Rearrange characters
- Minimum Moves
- Yet Another Minimization Problem
- Reverse alternate nodes in Link List
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Rearrange a linked list
- Add 1 to a Linked List Number
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Count BST nodes that lie in a given range
- Check for BST
- Merge Sort
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Merge two sorted linked lists
- Add all greater values to every node in a BST
- Sum Tree
- Flattening a Linked List
- Stack using Queue
- Tree Boundary Traversal
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Maximum difference between node and its ancestor
- Lowest Common Ancestor in a BST
- Two Stacks in an Array
- The Celebrity Problem
- Largest subarray with 0 sum
- Topological sort
- Vertical Tree Traversal
- Merge K sorted linked lists
- Find the number of islands
- Find kth element of spiral matrix
- Get Min from Stack
- Gas Station
- Check if subtree
- Kth smallest element in a Matrix
- Is Binary Tree Heap
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Interleaved Strings
- Count Palindromic Subsequences
- Implement Atoi
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze
- Bipartite Graph
- Merge two BST 's
- Count distinct elements in every window
- Merge k Sorted Arrays
- Root to leaf paths sum
- Find triplets with zero sum
- Sort a stack
- Duplicate Subtree
- Top View of Binary Tree
- Find Common Nodes in two BSTs
- Level order traversal
- Peak element
- Polynomial Addition
- Delete nodes greater than k
- Merge Sort for Linked List
- Union of Two Linked Lists
- Counting elements in two arrays
- Foldable Binary Tree
- Arrange Consonants and Vowels
- Maximum path sum
- Predecessor and Successor
- Leaves to DLL
- Find length of Loop
- Median of BST
- Construct Tree from Preorder Traversal
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- Count Number of SubTrees
- Ceil in BST
- Count set bits
- Tower Of Hanoi
- Reverse array in groups
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Possible Words From Phone Digits
- Stock buy and sell
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Binary Array Sorting
- Count Inversions
- Indexes of Subarray Sum
- Count the number of possible triangles
- Triplet Sum in Array
- Merge Without Extra Space
- Possible paths between 2 vertices
- Level of Nodes
- Boolean Matrix
- Spirally traversing a matrix
- Search in a sorted Matrix
- Determinant of a Matrix
- Unit Area of largest region of 1's
- Subarray with 0 sum
- Subarrays with equal 1s and 0s
- Longest Consecutive Subsequence
- Strings Rotations of Each Other
- Case-specific Sorting of Strings
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- Infix to Postfix
- K Sized Subarray Maximum
- Minimum Cost of ropes
- Activity Selection
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Target Sum Combinations
- Unique Subsets
- M-Coloring Problem
- Minimum Jumps
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Number of Unique Paths
- Allocate Minimum Pages
- Preorder to BST
- X Total Shapes
- Find whether path exist
- Kth Smallest
- Shortest Common Supersequence
- Nth Catalan Number
- Rotten Oranges
- Steps by Knight
- Maximize The Cut Segments
- Rotate by 90 degree
- Top K Frequent in Array
- Stock Buy and Sell – Multiple Transaction Allowed
- Generate Parentheses
- Word Search
- Prerequisite Tasks
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Sort 0s, 1s and 2s
- Pascal Triangle
- Number of subarrays with maximum values in given range
- Equal Sum
- Large Factorial
- Maximize Number of 1's
- Sum of Middle elements of two sorted arrays
- Consecutive 1's not allowed
- Count Occurences of Anagrams
- Single Among Doubles
- Pythagorean Triplet
- Painting the Fence
- Pair Sum Closest to 0
- Super Primes
- Maximum Product Subarray
- Longest subarray with sum divisible by K
- Row with max 1s
- Column name from a given column number
- Concatenation of Zig-Zag String in n Rows
- Form a palindrome
- Nuts and Bolts Problem
- Rotate a Matrix
- Longest Subarray with Sum K
- Next Smaller Element
- Transform String
- Count the Reversals
- Sum of two large numbers
- Max Sum without Adjacents
- Factorials of large numbers
- Reverse each word in a given string
- Length of the longest substring
- Remove leading zeros from an IP address
- k largest elements
- Longest Common Substring
- Smallest distinct window
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Integer to Words
- K-th element of two Arrays
- Possible groups
- Triplets with Smaller Sum
- Rod Cutting
- Minimum swaps and K together
- LCS of three strings
- Longest Palindromic Subsequence
- First negative in every window of size k
- Maximum difference of zeros and ones in binary string
- Number of palindromic strings
- Minimum sum
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Reaching the heights
- Palindrome in Alphanumeric String
- Minimum Deletions
- Valid Substring
- Minimum number of deletions
- Permutations of a String
- CamelCase Pattern Matching
- Subarrays Product Less than K
- Unique Number II
- Game of XOR
- Largest prime factor
- Modified Game of Nim
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Sieve of Eratosthenes
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Dice throw
- Perfect Sum Problem
- Power Of 2 and Subsequences
- Kth Smallest Factor
- K-Palindrome
- Power Set
- Knapsack with Duplicate Items
- nCr
- Count of sum of consecutives
- Subsets with XOR value
- Maximum path sum in matrix
- Partition Equal Subset Sum
- XOR Game
- Longest Bitonic subsequence
- Min Coin
- Count possible ways to construct buildings
- Array Pair Sum Divisibility Problem
- Money Distributions
- Find Last Digit Of a^b for Large Numbers
- Matchsticks game
- Killing Spree
- Subset Sums
- N Digit numbers with digits in increasing order
- Yes XOR No
- Number of paths
- Knight Walk
- Permutation with Spaces
- Choose and Swap
- Return two prime numbers
- Find nth root of m
- Sum of Query II
- Fact Digit Sum
- Find Prime numbers in a range
- Fraction to Repeating Decimal
- Dudeney's Cow Problem
- Rank The Permutations
- Smaller on Left
- Filling Bucket
- How Many X's?
- Longest Repeating Subsequence
- Composite and Prime
- Is Sudoku Valid
- Stream First Non-repeating
- Villain Con
- Possible paths
- Segregate even and odd nodes in a Linked List
- Kth Largest in a Stream
- Product of Primes
- Transitive closure of a Graph
- Find all distinct subset (or subsequence) sums
- Queries on Strings
- Special Matrix
- Number of Palindromic paths in a Matrix
- Help a Thief!!!
- Count the paths
- Floyd Warshall
- Negative weight cycle
- Flood fill Algorithm
- Array to BST
- Form coils in a matrix
- Techfest and the Queue
- Shortest Source to Destination Path
- Base Equivalence
- Shortest Path between Cities
- Height Using Parent Array
- Geek and Number String
- Number of minimum picks to get 'k' pairs of socks from a drawer
- Spiral Matrix
- Coins of Geekland
- Valid Pair Sum
- Dam of Candies
- Transfiguration
- Repeated String Match
- Ruling Pair
- Triplets in Sorted Linked List
- Restrictive Candy Crush
- Help Classmates
- Restricted Pacman
- Lucy's Neighbours
- Spidey Sense
- Project Manager
- Escape the Forbidden Forest
- Jump Game
- Max Diff Elements and Indexes
- Iterative Inorder
- Triplets with sum with given range
- Iterative Postorder
- Subset Sum Problem
- Longest Palindromic Substring
- Form a palindrome
- All Palindromic Partitions
- Bellman-Ford
- Capacity To Ship Packages Within D Days
- Sort a 2D vector diagonally
- Rearrange characters
- Distribute N candies among K people
- Count pairs in array divisible by K
- Number of Provinces
- Prefix match with other strings
- Maximum sum leaf to root path
- Find duplicate rows in a binary matrix
- Maximum GCD of siblings of a binary tree
- BST to greater sum tree
- Find rectangle with corners as 1
- Cousins of a given node
- Division without using multiplication, division and mod operator
- Sort for Singly Linked List
- Minimize the Heights I
- Subsets
- Flatten binary tree to linked list
- Rank The Permutations
- Anti Diagonal Traversal of Matrix
- IPL 2021 - Match Day 2
- Compute Before Matrix
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- Min Cost Climbing Stairs
- Overlapping Intervals
- Bitwise AND of the Array
- Longest Possible Route in a Matrix with Hurdles
- Reverse a Stack
- Robots
- Hit most Balloons
- Maximum Meetings in One Room
- Enemy
- Buy Maximum Stocks
- Exactly one swap
- Maximum Winning score
- Compute Before Matrix
- Levels Of Game
- Validate Stack Operations
- Special Keyboard 2
- Maximum selections
- Next element with greater frequency
- Calculate the average Waiting Time and Turnaround Time using Shortest Job First
- Number of Distinct Islands
- Number Of Enclaves
- Eventual Safe States
- Shortest path in Directed Acyclic Graph
- Geek's Training
- Task Scheduler
- Number of Longest Increasing Subsequence
- Print Longest Increasing Subsequence
- Floor in BST
- Max Sum without Adjacents
- Count beautiful strings
- Fraction pairs with sum 1
- New Year Resolution
- Count Subarrays with given XOR
- Sahil love good scorer
- Geek and his Marks
- Geek-onacci Number
- Geek and Code
- Geek and Pens
- The Hiring Contest
- Geek-onacci Number ||
- Ticket Counter
- Minimum XOR
- 3 - Numbers
- Reverse a linked list
- Frequency in a Linked List
- Pairwise swap elements of a linked list
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Inorder Traversal
- Reverse a Doubly Linked List
- Bubble Sort
- Selection Sort
- Insertion Sort
- Right View of Binary Tree
- Mirror Tree
- Two Mirror Trees
- 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
- Find Transition Point
- Queue using two Stacks
- Remove Duplicates from a Sorted Linked List
- Postorder Traversal
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Square Root
- Nodes without a Sibling
- Binary Search
- Remove Duplicates Sorted Array
- BST Keys in a Range
- K-Palindrome
- Unique rows in boolean matrix
- You and your books
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Inorder Successor in BST
- Index of an Extra Element
- Disjoint set (Union-Find)
- Insert in a Sorted List
- Minimum element in BST
- More than n/k Occurrences
- Reverse Using Stack
- Symmetric Tree
- Next Right Node
- Find n/k th node in Linked list
- Queue Reversal
- Reverse first K of a Queue
- Find Sum Pairs Across Two BSTs
- Move all zeros to the front of the linked list
- Delete Mid of a Stack
- The New Line
- Data Types
- Taking input
- Learn to Comment
- GetLine and Ignore
- Learning to be precise
- Bitwise Operators
- Even Odd
- For Loop- primeCheck
- While loop- printTable
- Learning Macros
- Step by Step Condition
- Start Coding - Java
- Learn to Comment - Java
- Swap the array elements
- Count the Specials
- Matrix Interchange
- Predict the Column
- Xoring and Clearing
- Consonants and Vowels check
- Almost Equal
- The Pattern Matcher
- Swap values using References
- Swap the objects
- Structs and Objects
- Two Dimensional World
- Learning Structs
- Delete Array
- Maximum Area Rectangle
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Frequency in Queue
- Get min at pop
- First Set Bit
- Rightmost different bit
- Check K-th Bit
- Primality Test
- Longest Consecutive 1's
- Power of 2
- Swap odd and even bits
- Equilibrium Point
- Array Leaders
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Transpose of Matrix
- Matrix Boundary Traversal
- Anagram
- Winner of an election
- Isomorphic Strings
- Reverse Words
- Minimum indexed character
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Generate Binary Numbers
- N meetings in one room
- Largest number with given sum
- Count ways to N'th Stair
- Count number of hops
- Union of Arrays with Duplicates
- Check Equal Arrays
- Positive Negative Pair
- Missing in Array
- Product array puzzle
- Roman Number to Integer
- Mean of range in array
- Max Value Permutation
- Missing And Repeating
- Max value
- Find the closest number
- Sort by Set Bit Count
- k sorted array
- Maximize sum after K negations
- Adding Ones
- Pairs with certain difference
- Common in 3 Sorted Arrays
- Sorted and Rotated Minimum
- Sum of elements between k1'th and k2'th smallest elements
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- Min sum formed by digits
- Minimize the sum of product
- Chocolate Distribution Problem
- Swap and Maximize
- Bitonic Point
- Left most and right most index
- Sort Array II
- Alternate Positive Negative
- Maximum Possible Sum of Products
- Remove b and ac from a given string
- Addition of submatrix
- Rearrange a string
- Facing the sun
- Second Largest
- Convert array into Zig-Zag fashion
- Number of occurrence
- Find missing in second array
- String's Count
- Longest Common Prefix of Strings
- Counts Zeros Xor Pairs
- Two sum -Pairs with 0 Sum
- Segregate 0s and 1s
- Play With OR
- Hungry Pizza Lovers
- At Least K Occurrences
- Find the closest pair from two arrays
- Maximum sum of increasing order elements from n arrays
- Count the Zeros
- Length of longest subarray
- Four Elements
- Palindrome String
- Maximum average subarray
- The Optimal Selection
- Smallest greater elements in whole array
- Fitting The Array
- Shop in Candy Store
- Encrypt the string - 2
- Kth LSB
- Minimum product pair
- Minimum Operations
- Adding Array Elements
- Number of 1 Bits
- Armstrong Numbers
- Midori and chocolates
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Change Bits
- Copy Set Bits in Range
- Count Digits
- Sum Of Digits
- Palindrome
- Shortest path from 1 to n
- Sum 1 to n Divisors
- Find sum of divisors
- Minimum steps to minimize n as per given condition
- Faithful Numbers
- Reach the Nth point
- Minimum number of Coins
- Right most non zero digit
- Perfect Numbers
- Nth item through sum
- Smallest number with sum of digits as N and divisible by 10^N
- Adjacents are not allowed
- Maximize Toys
- Largest number possible
- Check if it is possible to survive on Island
- Deficient Number
- Trailing zeroes in factorial
- Form a number divisible by 3 using array digits
- Sum of all prime numbers between 1 and n
- Least Prime Factor
- Subtraction and two numbers
- Sum of First N Natural Numbers
- Smallest number by rearranging digits of a given number
- Sharing is Caring
- Summing the Sum
- Circular Prime Number
- Maximum Diamonds
- Make Zeroes
- Surround the 1's
- Prime number of set bits
- Inorder Traversal and BST
- Sequence Fun
- Letters Collection
- Game of digits
- Rearrange Geek and his Classmates
- Print Pattern
- Print the pattern
- Sum of dependencies in a graph
- Count all possible paths from top left to bottom right
- Rearrange Geek and his Classmates
- Modified Numbers and Queries
- Sum of k smallest elements in BST
- Print Diagonally
- Gadgets of Doraland
- Plus One
- Reverse Bits
- Sum of two numbers without using arithmetic operators
- Even and Odd
- Search insert position of K in a sorted array
- Queue using stack
- Largest value in each level
- Maximum number of 2X2 squares
- First and last occurrences of x
- Checkmate
- Geek and Snow Fighting
- License Key Formatting
- Awesome Pairs
- Smallest Subset with Greater Sum
- Minimum Sum of Absolute Differences of Pairs
- Smallest window containing 0, 1 and 2
- Can Make Triangle
- Matrix Operations
- Find pairs with given sum in doubly linked list
- Invalid Parenthesis
- Maximum Frequency
- Triangle and Square
- Assign Tasks
- Police Station
- Maximum Depth Of Binary Tree
- Bus Ticket Change
- Refueling
- Toggle
- Ticket Counter
- Magic and toy shop
- Unique Number of Occurrences
- Linked List Group Reverse
- Binary Tree to DLL
- Max rectangle
- LRU Cache
- Partition array to k subsets
- Maximum subset XOR
- Alien Dictionary
- Nodes at given distance in binary tree
- String Permutations
- Trapping Rain Water
- Max Circular Subarray Sum
- Smallest window containing all characters
- Histogram Max Rectangular Area
- Max of min for every window size
- Solve the Sudoku
- Strongly connected component (Tarjans's Algo)
- Minimum Cost Path
- Median of 2 Sorted Arrays of Different Sizes
- Merge Without Extra Space
- The Painter's Partition Problem-II
- Ugly Numbers
- Search Pattern
- Wildcard string matching
- Edit Distance
- Minimum sum partition
- Palindromic Partitioning
- Stock Buy and Sell – Max K Transactions Allowed
- Check Tree Traversal
- Matrix Chain Multiplication
- Bit Difference
- Boolean Parenthesization
- N-Queen Problem
- Geek collects the balls
- Water Connection Problem
- 132 Geeky Buildings
- Shortest Range In BST
- Elixir of Life
- Search Pattern (Z-algorithm)
- Number of subsets with product less than k
- Minimum X (xor) A
- Minimum operations to convert array A to B
- Sorted Linked List to BST
- Palindrome Pairs
- Word Ladder II
- Split Array Largest Sum
- Count the number of subarrays
- Largest rectangular sub-matrix whose sum is 0
- Minimum time to fulfil all orders
- Candy
- Maximum good length
- Rotate Array
- Print Linked List
- Find Length of Linked List
- Size of Binary Tree
- Count Leaves in Binary Tree
- Queue Using Array
- Replace all 0's with 5
- Print number pattern
- Preorder Traversal
- Equal Sum and XOR
- Smallest divisible number
- Palindromic Array
- Anagram of String
- Is Linked List Length Even?
- Sum of Binary Tree
- Alternates in an Array
- Start Coding
- The Size of
- Logical Operators
- Count Odd and Even
- Sort and Reverse Vector
- Front to Back
- Queue Push & Pop
- Who has the majority?
- Sum of diagonals
- Absolute Value
- Convert Celsius To Fahrenheit
- Bit Difference
- Print 1 To N Without Loop
- Array Search
- Sorted Array Search
- Addition Under Modulo
- Reverse a String
- Keypad typing
- First n Fibonacci
- Binary Array Sorting
- C++ Hello World
- Sum of Array
- Searching in an Array
- Doubling the value
- Print Elements of Array
- Balanced Array
- At least two greater elements
- Sort a String
- Anagram Palindrome
- Change the string
- Value equal to index value
- Convert a list of characters into a String
- Count of camel case characters
- Remove vowels from string
- Uncommon characters
- Swap kth elements
- Lower case to upper case
- Repeated Character
- First 1 in a Sorted Binary Array
- Max and Min Product from 2 Arrays
- Elements in the Range
- Display longest name
- Find element at a given Index
- Last index of One
- Upper Case Conversion
- Sort the string in descending order
- Front-Back Transformation - copy
- Merge two strings
- Largest Element in Array
- Rotate Array by One
- Game with nos
- One odd Occuring
- Ishaan Loves Chocolates
- Array Subset
- Product is even or odd?
- Minimum number to form the sum even
- C++ Strings
- Count of smaller elements
- Min and Max in Array
- Multiply left and right array sum
- Positive and negative elements
- Print first letter of every word in the string
- Last index of a character in the string
- Remove character
- Delete alternate characters
- No of Carry Operations
- Magical String[Duplicate Problem]
- GCD of Array
- GCD of two numbers
- C++ if-else (Decision Making)
- Addition of Two Numbers
- C++ Input / Output
- 1s Complement
- Odd or Even
- Check set bits
- One's Complement
- XOR of all elements
- The OR Gate
- The AND Gate
- Find position of set bit
- Set kth bit
- Factor OR Multiple
- Vowel or Not
- The XOR Gate
- Java Hello World
- Change all even bits in a number to 0
- XOR Count Zero and One
- Strong Numbers
- Set all odd bits
- Check if divisible by 5
- set-bits and number
- LCM And GCD
- House Robber
- Maximum Area
- Message Spreading
- Find n-th term of series 1, 3, 6, 10, 15, 21
- Binary Shift to Divide
- Check perfect square
- Strong Numbers
- Median of an Array
- Find N-th term in the series
- Factorial
- Sum of Digit is Palindrome or not
- Reverse digits
- Special Odd Series Sum
- Special Series Sum
- Difference series
- Binary number to decimal number
- Series AP
- Floyd's triangle
- Sum of elements in a matrix
- Help Joey
- Jumpy Ball
- Multiplication Table
- Square Divisors
- The dice problem
- Remainder Evaluation
- Count Squares
- Matching Pair
- Check if the number is Fibonacci
- Middle of Three
- Anshuman's Favourite Number
- Mind Game
- Print the Kth Digit
- Swap two numbers
- Buy chocolates and save N rupees
- 12 hour clock Multiplication
- 12 hour clock subtraction
- Modulus of two double numbers
- Half N by M
- Sum of large numbers
- Make a Distinct Digit Array
- Sum of product of x and y with floor(n/x) = y
- Sum of primes