- Courses
- Tutorials
- Practice
Data Structure
Java
Python
HTML
Interview Preparation
flutterfly
STREAK
144/1409
days
Longest streak/Global longest streak
Language Used
Java, C++, Python
Coding Score
2035
Problem Solved
598
Contest Rating
__
Campus Ambassador
adityatiwaahgz117 points
Contributor
117 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
6 submissions in current year
SCHOOL (1)
BASIC (29)
EASY (213)
MEDIUM (296)
HARD (59)
- Count Linked List Nodes
- Postorder Traversal
- Peak element
- Linked List Insertion At End
- Minimum element in BST
- Anagram of String
- Is Linked List Length Even?
- Identical Linked Lists
- Sum of Binary Tree
- Reverse array in groups
- Array Search
- Binary Array Sorting
- Most Frequent Character
- Reverse a String
- First n Fibonacci
- Sum of Array
- Sum of Natural Numbers
- Check for subsequence
- Uncommon characters
- Merge two strings
- Largest Element in Array
- Array Subset
- GCD of two numbers
- 1s Complement
- Check an Integer is power of 3 or not
- Sum Of Digits
- Binary number to decimal number
- Prime Number
- Swap The Numbers
- Reverse alternate nodes in Link List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Insert in Sorted Circular Linked List
- Count BST nodes that lie in a given range
- Quick Sort
- Binary Tree from Inorder and Postorder
- Intersection in Y Shaped Lists
- Heap Sort
- Merge two sorted linked lists
- Diagonal Tree Traversal
- Absolute List Sorting
- Two Stacks in an Array
- Largest subarray with 0 sum
- Find the number of islands
- Find kth element of spiral matrix
- Linked List to Binary Tree
- Validate an IP Address
- Additive sequence
- Largest BST
- Sorted subsequence of size 3
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Print matrix in diagonal pattern
- BST with Dead End
- Merge two BST 's
- Count distinct elements in every window
- Longest Palindrome in Linked List
- Find triplets with zero sum
- Duplicate Subtree
- Find Common Nodes in two BSTs
- Polynomial Addition
- Union of Two Linked Lists
- Euler Circuit in an Undirected Graph
- Euler circuit and Path
- Binary Tree to CDLL
- Linked List that is Sorted Alternatingly
- K Sum Paths
- Leftmost and rightmost nodes of binary tree
- Count the nodes at distance K from leaf
- Vertical sum
- Isomorphic Trees
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Normal BST to Balanced BST
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- ZigZag Tree Traversal
- Swap Kth nodes from ends
- Mother Vertex
- Ceil in BST
- Gray to Binary equivalent
- Smallest Positive Missing
- Power Of Numbers
- Rotate and delete
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Index
- Stock buy and sell
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Two Repeated Elements
- Indexes of Subarray Sum
- Number of pairs
- Merge Without Extra Space
- Level of Nodes
- Make Matrix Beautiful
- Boolean Matrix
- Search in a sorted Matrix
- Determinant of a Matrix
- Subarray with 0 sum
- Case-specific Sorting of Strings
- K Sized Subarray Maximum
- Nearly sorted
- Fractional Knapsack
- Minimum Jumps
- Stickler Thief
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- Lucky Numbers
- Zero Sum Subarrays
- Implement Trie
- Shortest Common Supersequence
- Nth Catalan Number
- Container With Most Water
- Rotate by 90 degree
- Top K Frequent in Array
- Word Break
- Stock Buy and Sell – Multiple Transaction Allowed
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Sort 0s, 1s and 2s
- Pascal Triangle
- Maximum Index
- Number of subarrays with maximum values in given range
- Flip Bits
- Consecutive 1's not allowed
- Pythagorean Triplet
- Painting the Fence
- Sum of bit differences
- Form the Largest Number
- Longest subarray with sum divisible by K
- Check if a string is repetition of its substring of k-length
- Row with max 1s
- Check if frequencies can be equal
- Column name from a given column number
- Substrings with K Distinct
- Form a palindrome
- Max Sum without Adjacents
- Factorials of large numbers
- Find the N-th character
- Remove leading zeros from an IP address
- Sum of XOR of all pairs
- Longest substring with distinct characters
- Longest Substring with K Uniques
- Integer to Words
- K-th element of two Arrays
- Smallest Absolute Difference
- Longest Palindromic Subsequence
- Largest Sum Subarray of Size at least K
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Reaching the heights
- Smaller on Left
- Minimum Deletions
- Print N-bit binary numbers having more 1s than 0s
- Sum of Products
- Subarrays Product Less than K
- Unique Number II
- Bleak Numbers
- Modular Exponentiation for large numbers
- Game of XOR
- Largest prime factor
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Sequence of Sequence
- Gold Mine Problem
- Perfect Sum Problem
- Fibonacci Sum
- Smallest number
- Kth Smallest Factor
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Knapsack with Duplicate Items
- nCr
- Subsets with XOR value
- Partition Equal Subset Sum
- XOR Game
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Brain Game
- Matchsticks game
- Killing Spree
- N Digit numbers with digits in increasing order
- Number of paths
- Nth Natural Number
- Number of paths in a matrix with k coins
- Choose and Swap
- Find Prime numbers in a range
- Party in Town
- Game with String
- Smith Number
- How Many X's?
- Longest Repeating Subsequence
- Rotate Each Row of Matrix K Times
- Total Decoding Messages
- Stream First Non-repeating
- Pairs of Non Coinciding Points
- 7 Segment Display
- Product of Primes
- Transitive closure of a Graph
- Replace O's with X's
- Rohan's Love for Matrix
- Check Mirror in N-ary tree
- Queries on Strings
- Special Matrix
- Traverse All Edges And Vertices
- Find the string in grid
- Shortest Uncommon Subsequence
- Biconnected Graph
- Techfest and the Queue
- Shortest Source to Destination Path
- Height Using Parent Array
- Save Your Life
- Transfiguration
- Iterative Postorder
- Subset Sum Problem
- Bellman-Ford
- Subarrays with sum K
- Coin Piles
- Remove K Digits
- Number of Provinces
- Prefix match with other strings
- Binary Matrix with at most K 1s
- Maximum sum leaf to root path
- Find duplicate rows in a binary matrix
- BST to greater sum tree
- Find rectangle with corners as 1
- Paths from root with a specified sum
- Insertion Sort for Singly Linked List
- Remove all occurences of duplicates in a linked list
- Anti Diagonal Traversal of Matrix
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- Clone an Undirected Graph
- Minimum times A has to be repeated such that B is a substring of it
- Bitwise AND of the Array
- Remove and Reverse
- Maximum number of events that can be attended
- Reverse a Stack
- Maximum product subset of an array
- Maximum Meetings in One Room
- Max Equal sum of 3 Stacks
- Buy Maximum Stocks
- Concatenate Equal to Target
- Exactly one swap
- Levels Of Game
- Find shortest safe route in a matrix
- Largest subtree sum in a tree
- Minimum Multiplications to reach End
- Number Of Enclaves
- Eventual Safe States
- City With the Smallest Number of Neighbors at a Threshold Distance
- Shortest path in Directed Acyclic Graph
- Asteroid Collision
- Minimal Cost
- Task Scheduler
- Lemonade Change
- Maximum Sum Combination
- Count Number of Nodes in a Binary Tree
- Floor in BST
- GCD Array
- Minimize number of Students to be removed
- Maximum Value
- Shortest Prime Path
- Flattening a Linked List
- Absolute difference divisible by K
- Make array elements unique
- Next Greater Element in Circular Array
- Carpet into Box
- Minimum X (xor) A
- Geeks And The String
- Find the longest string
- Maximum Profit By Choosing A Subset Of Intervals
- Minimum repeat to make substring
- Paint N House
- Max Sum without Adjacents
- Intersection Point in Y Shaped Linked Lists
- BST Downward Traversal
- Length of the longest subarray with positive product
- Count number of free cell
- Maximum Bipartite Matching
- Minimum Days
- Prime List
- Walls Coloring
- Water the plants
- Geeks Island
- Apple Sequences
- Connect Nodes at Same Level
- Unique Paths in a Grid
- Valid Compressed String
- Fill the Matrix
- Number of Good Components
- Optimal Array
- Best Node
- Update Queries
- Good Stones
- Count Cyclic Paths
- Maximum Triplet product
- Second smallest number
- Special Palindrome Substrings
- Maximum Possible Value
- Distinct Difference
- Anagrams in Linked List
- Yet another query problem
- Geek hates too many 1s
- Shortest XY distance in Grid
- BST Maximum Difference
- Nearest smaller tower
- Find Kth permutation
- Fraction pairs with sum 1
- New Year Resolution
- Grinding Geek
- Flatten BST to sorted list
- Minimize the Difference
- Pairs violating the BST property
- Count Subarrays with given XOR
- Reverse a linked list
- Pairwise swap elements of a linked list
- Node at a given index in linked list
- Linked list of strings forms a palindrome
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Reverse a Doubly Linked List
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Delete without head pointer
- Height of Binary Tree
- Balanced Tree Check
- Middle of a Linked List
- Left View of Binary Tree
- Decimal Equivalent of Binary Linked List
- Intersection Sorted Linked Lists
- Find Transition Point
- Queue using two Stacks
- Remove Duplicates from a Sorted Linked List
- Level Order in spiral form
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Lowest Common Ancestor in a BST
- Binary Search
- Remove Duplicates Sorted Array
- Remove duplicates in array
- Binary Tree to BST
- Unique rows in boolean matrix
- Leaves at Same Level or Not
- Multiply two linked lists
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Level order traversal
- Inorder Successor in BST
- Insert in a Sorted List
- Sum of leaf nodes in BST
- More than n/k Occurrences
- Reverse Using Stack
- Full Binary Tree
- Symmetric Tree
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List
- Count Pairs whose sum is equal to X
- Find length of Loop
- Median of BST
- Leaf under budget
- Queue Reversal
- Reverse first K of a Queue
- Remove Half Nodes
- Sum of Leaf Nodes
- Closest Neighbour in BST
- Brothers From Different Roots
- Delete Mid of a Stack
- Start Coding - Java
- Precise Format - Java
- logical Operators - Java
- Bitwise Operators - Java
- Swap the array elements
- Predict the Column
- Xoring and Clearing
- Get min at pop
- First Set Bit
- Rightmost different bit
- K-th Bit is Set or Not
- Power of 2
- Wave Array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Roof Top
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Transpose of Matrix
- Rotate by 90 degree
- Matrix Boundary Traversal
- Anagram
- Winner of an election
- String Rotated by 2 Places
- Strings Rotations of Each Other
- Isomorphic Strings
- Reverse Words
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Minimum Cost of ropes
- Reach a given score
- Count ways to N'th Stair
- Count number of hops
- Union of Arrays with Duplicates
- Check Equal Arrays
- Positive Negative Pair
- Missing in Array
- Roman Number to Integer
- Missing And Repeating
- Count the elements
- Find the closest number
- Sort by Set Bit Count
- Move All Zeroes to End
- String Duplicates Removal
- Min sum formed by digits
- Minimize the sum of product
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- Find Pair Given Difference
- Swap and Maximize
- Single Number
- Alternate Positive Negative
- Remove Consecutive Characters
- Remove Duplicates
- Facing the sun
- Second Largest
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Rotate Bits
- Number of occurrence
- K-Pangrams
- Reversing the equation
- Does array represent Heap
- Modify the Array
- Convert an array to reduced form
- Check if array is sorted
- Find missing in second array
- String's Count
- Min Manipulations to make Strings Anagram
- Segregate 0s and 1s
- Play With OR
- Hungry Pizza Lovers
- At Least K Occurrences
- Find the closest pair from two arrays
- Palindrome String
- Total count
- Shop in Candy Store
- Partition a number into two divisible parts
- Is Binary Number Multiple of 3
- Minimum Operations
- Divisibility by 8
- Number of 1 Bits
- Armstrong Numbers
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Swap two nibbles in a byte
- Copy Set Bits in Range
- Number of factors
- Maximum Sum Problem
- Party of Couples
- Count numbers
- Shortest path from 1 to n
- Sum 1 to n Divisors
- Sieve of Eratosthenes
- Reach the Nth point
- Nearest Perfect Square
- Perfect Numbers
- Nth item through sum
- Array's Game
- Non Fibonacci Number
- Maximize Toys
- Largest number possible
- Recamans sequence
- Number of Factors of N!
- Trailing zeroes in factorial
- Form a number divisible by 3 using array digits
- Least Prime Factor
- Sum of First N Natural Numbers
- Recursive sequence
- Summed Matrix
- Arithmetic Number
- Row with Minimum 1s
- Surround the 1's
- Inorder Traversal and BST
- Letters Collection
- Print Pattern
- Sum of dependencies in a graph
- Rearrange Geek and his Classmates
- Largest value in each level
- Find all possible paths from top to bottom
- Smallest window containing 0, 1 and 2
- Insert an Element at the Bottom of a Stack
- Can Make Triangle
- Matrix Operations
- Print N to 1 without loop
- Fibonacci series up to Nth term
- Maximum Depth Of Binary Tree
- Minimize the sum
- Last modified ball
- Transform to Sum Tree
- Parent of Max GCD Siblings in a Binary Tree
- Find the first node of loop in linked list
- Maximum Weight Node
- Type it!
- Min operations
- Last cell in a Matrix
- Balloon Everywhere
- Reverse both parts
- Cutting Rectangles
- Is it Fibonacci
- Taxi Booking
- Max Level Sum in Binary Tree
- Binary matrix having maximum number of 1s
- Minimum Number
- Unique Number of Occurrences
- Balloon Everywhere
- Array Game
- Count Pairs whose sum is less than target
- Union of Two Sorted Arrays with Distinct Elements
- Intersection of Two arrays with Duplicate Elements
- Search in a row-wise sorted matrix
- Linked List Group Reverse
- Binary Tree to DLL
- Clone List with Next and Random
- Min distance between two given nodes of a Binary Tree
- Subtraction in Linked List
- Distinct occurrences
- AVL Tree Insertion
- Partition array to k subsets
- AVL Tree Deletion
- Nodes at given distance in binary tree
- String Permutations
- Trapping Rain Water
- Smallest window containing all characters of another string
- Solve the Sudoku
- Next Smallest Palindrome
- Count Pairs in an Array
- Search Pattern (KMP-Algorithm)
- Count Smaller elements
- Longest Prefix Suffix
- Number of distinct subsequences
- Wildcard string matching
- Circle of strings
- Longest repeating and non-overlapping substring
- Sum-string
- Palindromic Partitioning
- Next Happy Number
- Strictly Increasing Array
- Kill Captain America
- Boolean Parenthesization
- Longest valid Parentheses
- Possible Paths in a Tree
- Word Break - 2
- Brackets in Matrix Chain Multiplication
- Assignment Problem
- Corona Vaccine
- Minimum X (xor) A
- Find all Critical Connections in the Graph
- Palindrome Pairs
- Number of distinct words with K maximum contiguous vowels
- Split Array Largest Sum
- Scrambled String
- Find the String
- Maximum Number of Toys
- Vertex Cover
- MaxSkill
- Candy
- Better String
- Count Lucky Permutations
- Count the Substring
- Select Nodes
- Largest Sum Cycle
- Fixing Two swapped nodes of a BST
- Shortest Path Using Atmost One Curved Edge
- Avoid Explosion
- Walls Coloring II
- Max min Height
- Maximum Number of coins
- Median of the Subarrays
- Making A Large Island
We use cookies to ensure you have the best browsing experience on our website. By using our site, you acknowledge that you have read and understood our Cookie Policy & Privacy Policy