- Tutorials
- Courses
Data Structure
Java
Python
HTML
Interview Preparation
gaurav472
starstarstar
STREAK
910/1431
days
Longest streak/Global longest streak
Language Used
C++, Java, Python
Coding Score
3527
Problem Solved
1046
Contest Rating
1762
Campus Mantri
souvik23641091 points
Contributor
1091 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
188 submissions in current year
SCHOOL (28)
BASIC (71)
EASY (340)
MEDIUM (497)
HARD (110)
- Reverse a linked list
- Occurence of an integer in a Linked List
- Pairwise swap elements of a linked list
- Given a linked list of 0s, 1s and 2s, sort it.
- linked list of strings forms a palindrome
- Detect Loop in linked list
- Remove duplicates from an unsorted linked list
- Sorted insert for circular linked list
- Delete node in Doubly Linked List
- Inorder Traversal
- Reverse a Doubly Linked List
- Bubble Sort
- Selection Sort
- Insertion Sort
- Check for BST
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Delete without head pointer
- Height of Binary Tree
- Balanced Tree Check
- Nth node from end of linked list
- Middle of a Linked List
- Left View of Binary Tree
- Delete Middle of Linked List
- Decimal Equivalent of Binary Linked List
- Intersection of two sorted Linked lists
- Find Transition Point
- Queue using two Stacks
- Remove duplicate element from sorted Linked List
- Stack using two queues
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Root to leaf path sum
- Square root of a number
- Print all nodes that don't have sibling
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Largest subarray of 0's and 1's
- Remove duplicate elements from sorted Array
- Level order traversal Line by Line
- Minimum Depth of a Binary Tree
- Remove duplicates in array
- Binary Tree to BST
- Unique rows in boolean matrix
- Remove every kth node
- Check if all leaves are at same level
- Multiply two linked lists
- You and your books
- Max distance between same elements
- Print matrix in diagonal pattern
- Check whether BST contains Dead End
- Delete a Node in Single Linked List
- Kth largest element in BST
- Minimum distance between two numbers
- Find duplicates in an array
- Count distinct elements in every window
- Three way partitioning
- Find Common Nodes in two BSTs
- Level order traversal
- Peak element
- Inorder Successor in BST
- Index of an Extra Element
- Union of Two Linked Lists
- Disjoint set (Union-Find)
- Insert in a Sorted List
- Split Linked List Alternatingly
- Sum of leaf nodes in BST
- Count More than n/k Occurences
- Counting Sort
- Reverse a string using Stack
- XOR of a given range
- 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
- Normal BST to Balanced BST
- Leaf under budget
- Linked List Matrix
- Queue Reversal
- Reverse First K elements of Queue
- Remove Half Nodes
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Closest Neighbour in BST
- Brothers From Different Roots
- ZigZag Tree Traversal
- Delete middle element of a stack
- Swap the array elements
- Predict the Column
- Xoring and Clearing
- Find the Frequency
- Reverse an Array
- Queue Operations
- Deque Implementations
- Frequency Game
- Find first set bit
- Rightmost different bit
- Check whether K-th bit is set or not
- Wave Array
- Frequencies of Limited Range Array Elements
- Equilibrium Point
- Leaders in an array
- Rotate Array
- Two Repeated Elements
- Roof Top
- Subarray with given sum
- Intersection of two sorted arrays
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Transpose of Matrix
- Rotate by 90 degree
- Determinant of a Matrix
- Boundary traversal of matrix
- Anagram
- Winner of an election
- Check if string is rotated by two places
- Strings Rotations of Each Other
- Isomorphic Strings
- Reverse Words
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Minimum Cost of ropes
- Activity Selection
- N meetings in one room
- Reach a given score
- Count ways to N'th Stair
- Count number of hops
- Union of Arrays with Duplicates
- Missing in Array
- Product array puzzle
- Roman Number to Integer
- Top K Frequent Elements in Array - |
- Intersection of two arrays
- Sort 0s, 1s and 2s
- Maximize Array Value After Rearrangement
- Pascal Triangle
- Count the elements
- Find Kth Rotation
- Find the closest number
- Adding Ones
- Split the Array
- Sorted and Rotated Minimum
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- Remove all duplicates from a given string
- Move all negative elements to end
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- Find Pair Given Difference
- Minimum number of swaps needed
- Pairs with difference k
- Swap and Maximize
- Bitonic Point
- Left most and right most index
- Single Number
- Alternate positive and negative numbers
- Remaining String
- Kth distance
- Count Alphabets
- Remove Duplicates
- Nearest multiple of 10
- Add two numbers represented by two arrays
- Reorganize The Array
- Sum of two numbers represented as arrays
- Facing the sun
- Max Sum without Adjacents
- 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
- Sum Pair closest to target
- String's Count
- Longest Common Prefix of Strings
- Longest substring with distinct characters
- Substrings with same first and last characters
- Count pairs with given sum
- Segregate 0s and 1s
- Play With OR
- First element to occur k times
- Find the closest pair from two arrays
- Merging two unsorted arrays in sorted order
- First negative integer in every window of size k
- Merge two binary Max heaps
- Palindrome String
- Total count
- Pangram Strings
- Pair with given sum in a sorted array
- Print Bracket Number
- Balanced string
- Shop in Candy Store
- Minimum number of deletions.
- Odd Even Problem
- Binary representation of next number
- Is Binary Number Multiple of 3
- Padovan Sequence
- Extract the Number from the String
- Minimum Operations
- Check if a number is divisible by 8
- Number of 1 Bits
- Find the Highest number
- Armstrong Numbers
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Swap two nibbles in a byte
- Copy Set Bits in Range
- Maximum Sum Problem
- Party of Couples
- Maximize dot product
- Shortest path from 1 to n
- Sum of all divisors from 1 to n
- Count numbers containing 4
- Trail of ones
- K-Palindrome
- Happy Number
- Reach the Nth point
- Break a number
- Perfect Numbers
- Minimum Cost To Make Two Strings Identical
- Maximize Toys
- Largest number possible
- Check if it is possible to survive on Island
- Recamans sequence
- Compare two fractions
- Form a number divisible by 3 using array digits
- Least Prime Factor
- Reverse Coding
- Recursive sequence
- Juggler Sequence
- Summed Matrix
- Maximum Diamonds
- Arithmetic Number
- C++ Matrix Rotation by 180 degree
- Row with minimum number of 1's
- Surround the 1's
- Coverage of all Zeros in a Binary Matrix
- Exit Point in a Matrix
- Trace Path
- Inorder Traversal and BST
- Letters Collection
- Help the Old Man!!!
- Print Pattern
- Maximum Sum LCM
- Check if it is possible to convert one string into another with given constraints
- Array to BST
- Sum of dependencies in a graph
- Find maximum volume of a cuboid
- Search insert position of K in a sorted array
- Queue using stack
- Design HashMap
- Count the Substrings
- Smallest window containing 0, 1 and 2
- Insert an Element at the Bottom of a Stack
- Sort a k sorted doubly linked list
- Print N to 1 without loop
- Print GFG n times
- Fibonacci series up to Nth term
- Find XOR of numbers from L to R.
- Stock Buy and Sell – Max one Transaction Allowed
- Maximum Depth Of Binary Tree
- Divisor Game
- Count Number of Nodes in a Binary Tree
- Minimize the sum
- Absolute difference divisible by K
- Last modified ball
- Transform to Sum Tree
- Make array elements unique
- Find the Node with maximum GCD of the siblings of a Binary Tree
- Find the first node of loop in linked list
- Maximum Weight Node
- Type it!
- Min operations
- Last cell in a Matrix
- Max Sum without Adjacents
- Count number of free cell
- Balloon Everywhere
- Apple Sequences
- Reverse both parts
- Cutting Rectangles
- Frogs and Jumps
- Make Array Elements Equal
- Equal Left and Right Subarray Sum
- Make the array beautiful
- Remainder on dividing by 11
- Is it Fibonacci
- Taxi Booking
- Max Level Sum in Binary Tree
- Binary matrix having maximum number of 1s
- Number of Subarrays of 0's
- Distinct Difference
- Maximum Identical Bowls
- Bus Conductor
- Wifi Range
- Minimum Number
- Minimum Integer
- Seating Arrangement
- String Mirror
- Powerfull Integer
- Make Palindrome
- Binary Modulo
- Total Cuts
- Bit Magic
- Array Operations
- Dominant Pairs
- Total Traversal Time
- Ticket Counter
- Unique Number of Occurrences
- GCD 1
- Organic Tree
- Two Smallests in Every Subarray
- Split an array into two equal Sum subarrays
- Largest Pair Sum
- Maximum Sum
- Two Swaps
- Maximize partitions in a String
- Count pairs with given sum
- Count Pairs whose sum is less than target
- Union of Two Sorted Arrays with Distinct Elements
- Intersection of Two arrays with Duplicate Elements
- Find All Triplets with Zero Sum
- Search in a row-wise sorted matrix
- Find Only Repetitive Element from 1 to n-1
- Unique Number I
- Reverse alternate nodes in Link List
- Reverse a Linked List in groups of given size
- Rotate a Linked List
- Add Number Linked Lists
- Add 1 to a Linked List Number
- Merge 2 sorted linked list in reverse order
- Delete nodes having greater value on right
- Quick Sort on Linked List
- Merge Sort
- Quick Sort
- Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Intersection Point in Y Shaped Linked Lists
- Diameter of a Binary Tree
- Heap Sort
- Merge two sorted linked lists
- Sum Tree
- Construct Binary Tree from Parent Array
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Tree Boundary Traversal
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- Lowest Common Ancestor in a Binary Tree
- Min distance between two given nodes of a Binary Tree
- Absolute List Sorting
- Max sum path in two arrays
- The Celebrity Problem
- Topological sort
- Vertical Traversal of Binary Tree
- Merge K sorted linked lists
- Find the number of islands
- Find kth element of spiral matrix
- Max sum in the configuration
- Get Min from Stack
- Serialize and deserialize a binary tree
- Gas Station
- Make Binary Tree From Linked List
- Toeplitz matrix
- Kth element in Matrix
- Is Binary Tree Heap
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Distinct occurrences
- Minimum Spanning Tree
- Additive sequence
- Largest BST
- Sorted subsequence of size 3
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Strongly Connected Components (Kosaraju's Algo)
- Rat in a Maze Problem - I
- Bipartite Graph
- Find the Closest Element in BST
- Merge two BST 's
- Trie | (Delete)
- Merge k Sorted Arrays
- Root to leaf paths sum
- Bridge edge in a graph
- Find triplets with zero sum
- Sort a stack
- Duplicate subtree in Binary Tree
- Top View of Binary Tree
- k-th Smallest in BST
- Merge Sort for Linked List
- Euler Circuit in an Undirected Graph
- Euler circuit and Path
- Merge Sort on Doubly Linked List
- Ancestors in Binary Tree
- Binary Tree to CDLL
- Pair Sum in BST
- Root to Leaf Paths
- Populate Inorder Successor for all nodes
- XOR Linked List
- Counting elements in two arrays
- Linked List that is Sorted Alternatingly
- K Sum Paths
- Leftmost and rightmost nodes of binary tree
- Construct Tree from Inorder & Preorder
- Arrange Consonants and Vowels
- Count the nodes at distance K from leaf
- Vertical sum
- Insert in Sorted way in a Sorted DLL
- Check if Tree is Isomorphic
- Maximum path sum from any node
- Predecessor and Successor
- Check for Children Sum Property in a Binary Tree
- Diagonal sum in binary tree
- Deletion and Reverse in Circular Linked List
- Duplicate Subtrees
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- Vertical Width of a Binary Tree
- Maximum sum of Non-adjacent nodes
- Mother Vertex
- Count total set bits
- Gray to Binary equivalent
- Tower Of Hanoi
- Smallest Positive Missing Number
- Power Of Numbers
- Maximum occured integer
- Possible Words From Phone Digits
- Rotate and delete
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Index
- Trapping Rain Water
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Union of Two Sorted Arrays
- Count the number of possible triangles
- Triplet Sum in Array
- Number of pairs
- Possible paths between 2 vertices
- Level of Nodes
- Make Matrix Beautiful
- Boolean Matrix
- Spirally traversing a matrix
- Search in a sorted Matrix
- Distance of nearest cell having 1
- Subarray with 0 sum
- Subarray range with given sum
- Sorting Elements of an Array by Frequency
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Evaluation of Postfix Expression
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- K largest elements
- Nearly sorted
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- Black and White
- Minimum Jumps
- Detect Cycle using DSU
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Optimal Strategy For A Game
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Allocate Minimum Pages
- Zero Sum Subarrays
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Nth catalan number
- Rotten Oranges
- Maximize The Cut Segments
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Closest Three Sum
- Word Break
- Stock buy and sell II
- Word Search
- Prerequisite Tasks
- Find All Four Sum Numbers
- Paths to reach origin
- Missing And Repeating
- Complement
- Maximum Sub Array
- Maximum Index
- Number of subarrays with maximum values in given range
- Flip Bits
- Top k numbers in a stream
- Longest Span in two Binary Arrays
- Sum of Middle elements of two sorted arrays
- Consecutive 1's not allowed
- Count Occurences of Anagrams
- Pythagorean Triplet
- Painting the Fence
- Search in Rotated Sorted Array
- Sum of bit differences
- Count the Number of Full Binary Trees
- Largest Number formed from an Array
- Alternate Vowel and Consonant String
- Add Binary Strings
- Maximum Product Subarray
- Longest subarray with sum divisible by K
- Check if a string is repetition of its substring of k-length
- Sort the given array after applying the given equation
- Row with max 1s
- Swapping pairs make sum equal
- Check if frequencies can be equal
- Column name from a given column number
- Substrings with K Distinct
- Palindrome SubStrings
- Form a palindrome
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Longest Subarray with Sum K
- Cutting Binary String
- Search Pattern (KMP-Algorithm)
- Shuffle integers
- Find the N-th character
- Length of the longest substring
- k largest elements
- Sum of XOR of all pairs
- Find missing in second array
- Longest Common Substring
- Smallest distinct window
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Look and Say Pattern
- K-th element of two Arrays
- Arranging the array
- Longest Arithmetic Progression
- Rod Cutting
- K closest elements
- Missing element of AP
- LCS of three strings
- Longest Palindromic Subsequence
- Largest Sum Subarray of Size at least K
- Equalize the Towers
- Minimum sum
- Not a subset sum
- Build the smallest
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Minimum Deletions
- A difference of values and indexes
- Print N-bit binary numbers having more 1s than 0s
- Minimum Swaps for Bracket Balancing
- Permutations of a String
- Number following a pattern
- CamelCase Pattern Matching
- Sum of Products
- Count the subarrays having product less than k
- Unique Number II
- Bleak Numbers
- Modular Exponentiation for large numbers
- Game of XOR
- Largest prime factor
- 3 Divisors
- Maximum Tip Calculator
- Modified Game of Nim
- Minimum number of deletions and insertions
- Maximum sum increasing subsequence
- Minimum cost to fill given weight in a bag
- Coin Change (Count Ways)
- Sequence of Sequence
- Santa Banta
- String Subsequence
- Mobile numeric keypad
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Dice throw
- Perfect Sum Problem
- Smallest number
- Shreyansh and his bits
- Longest subsequence-1
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Knapsack with Duplicate Items
- nCr
- Geek and its Game of Coins
- Maximum path sum in matrix
- Minimum steps to destination
- Partition Equal Subset Sum
- Longest Bitonic subsequence
- Get Minimum Squares
- Count possible ways to construct buildings
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Magic Triplets
- Matchsticks game
- Prime Pair with Target Sum
- Number of paths
- Nth Natural Number
- Number of paths in a matrix with k coins
- A Game of LCM
- Game with String
- Smith Number
- Next Permutation
- Smallest number on left
- Maximum sum of hour glass
- How Many X's?
- Longest Repeating Subsequence
- Longest alternating subsequence
- Left Rotate Matrix K times
- Decode the string
- Total Decoding Messages
- First non-repeating character in a stream
- Check If two Line segments Intersect
- 2D Hopscotch
- Print leaf nodes from preorder traversal of BST
- Number of Rectangles in a Circle
- Largest square formed in a matrix
- Integral Points Inside Triangle
- Transitive closure of a Graph
- Replace O's with X's
- Express as sum of power of natural numbers
- Count all Possible Path
- Find the string in grid
- Count the paths
- Floyd Warshall
- Negative weight cycle
- Flood fill Algorithm
- Techfest and the Queue
- Largest subsquare surrounded by X
- Shortest Source to Destination Path
- Divisibility tree
- Police and Thieves
- Huffman Encoding
- Recursively remove all adjacent duplicates
- Help Classmates
- Subset Sum Problem
- Form a palindrome
- Search Pattern (Rabin-Karp Algorithm)
- All Palindromic Partitions
- 3 sum closest
- Bellman-Ford
- Subarrays with sum K
- Coin Piles
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Clone a stack without using extra space
- Maximum XOR of two numbers in an array
- Construct list using given q XOR queries
- Number of Provinces
- Prefix match with other strings
- Maximum sum leaf to root path
- Find duplicate rows in a binary matrix
- BST to max heap
- Find rectangle with corners as 1
- Paths from root with a specified sum
- Shortest Prime Path
- Division without using multiplication, division and mod operator
- Insertion Sort for Singly Linked List
- Remove all occurences of duplicates in a linked list
- Minimize the Heights I
- Subsets
- Flatten binary tree to linked list
- Anti Diagonal Traversal of Matrix
- IPL 2021 - Match Day 2
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- Clone an Undirected Graph
- Min Cost Climbing Stairs
- Target Sum
- Overlapping Intervals
- Remove and Reverse
- Buy and Sell a Share at most twice
- Find k-th smallest element in given n ranges
- Even Swap
- Reverse a Stack
- Maximum product subset of an array
- K-th Largest Sum Contiguous Subarray
- Maximum Meetings in One Room
- Find Maximum Equal sum of Three Stacks
- Buy Maximum Stocks if i stocks can be bought on i-th day
- Exactly one swap
- Interleave the First Half of the Queue with Second Half
- Find shortest safe route in a matrix
- Expression contains redundant bracket or not
- Wine Buying and Selling
- Is it a tree ?
- Minimize connections
- Construct Binary Tree from String with bracket representation
- Shortest Distance in a Binary Maze
- Minimum Multiplications to reach End
- Eventual Safe States
- City With the Smallest Number of Neighbors at a Threshold Distance
- Alex Travelling
- Path With Minimum Effort
- Shortest path in Undirected Graph
- Shortest path in Directed Acyclic Graph
- Majority Element II
- Koko Eating Bananas
- Longest subarray with Atmost two distinct integers
- Minimal Cost
- Aggressive Cows
- Smallest Divisor
- Next Greater Element 2
- Combination Sum II
- Shortest Path in Weighted undirected graph
- Task Scheduler
- Hands of Straights
- Minimum Absolute Difference In BST
- Lemonade Change
- Maximum Sum Combination
- Non-overlapping Intervals
- Stickler Thief II
- Insert Interval
- Longest String Chain
- Partitions with Given Difference
- Floor in BST
- Largest Divisible Subset
- GCD Array
- Minimize number of Students to be removed
- Maximum Value
- Shortest Prime Path
- Flattening a Linked List
- Next Greater Element
- Carpet into Box
- Minimum X (xor) A
- Find minimum number of Laptops required
- Geeks And The String
- Find the longest string
- Maximum Profit By Choosing A Subset Of Intervals
- Minimum repeat to make substring
- Distinct Coloring
- Intersection Point in Y Shaped Linked Lists
- BST Downward Traversal
- Length of the longest subarray with positive product
- Maximum Bipartite Matching
- Minimum Days
- Prime List
- Walls Coloring
- Water the plants
- Geeks Island
- 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
- Maximum Intersecting Lines
- String rp or pr
- Knight in Geekland
- Shy Geek
- Count Special Numbers
- Minimum Steps Required
- Count Cyclic Paths
- Maximum Triplet product
- Second smallest number
- Special Palindrome Substrings
- Maximum Possible Value
- Find anagrams in linked list
- Yet another query problem
- Geek hates too many 1s
- Maximum Length
- Remove the balls
- Unequal Arrays
- Job Sequencing Problem
- Bheem Wants Ladoos
- Prefix Suffix String
- Smaller Sum
- Shortest XY distance in Grid
- BST Maximum Difference
- Nearest smaller tower
- Another Coin Change Problem
- Geek's Village and Wells
- Find Number
- Max Coins
- Good Subtrees
- Subtree In N-ary Tree
- Easy Task
- Add Minimum Characters
- Maximum subset sum
- Palindrome with minimum sum
- Count Total Setbits
- Tree Transformation
- Construct a Full Binary Tree
- Modify Linked List-1
- 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
- Kth common ancestor in BST
- Get Count
- Kth Missing Positive Number in a Sorted Array
- Count Subarrays with given XOR
- Set Matrix Zeroes
- Minimum cost to connect all houses in a city
- Meeting Rooms
- Split array in three equal sum subarrays
- Search in an almost Sorted Array
- Find H-Index
- Longest Subarray with Majority Greater than K
- Count all triplets with given sum in sorted array
- Implement Pow
- K Closest Points to Origin
- Longest Bounded-Difference Subarray
- Lexicographically Largest String After K Deletions
- Group Balls by Sequence
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Wildcard Pattern Matching
- Max rectangle
- Subtraction in Linked List
- LRU Cache
- AVL Tree Insertion
- Merge two BST 's
- Alien Dictionary
- Smallest range in K lists
- AVL Tree Deletion
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Maximum Path Sum between 2 Special Nodes
- String Permutations
- Trapping Rain Water
- Max Circular Subarray Sum
- Merge Without Extra Space
- Smallest window in a string containing all the characters of another string
- Histogram Max Rectangular Area
- Maximum of minimum for every window size
- Find median in a stream
- Solve the Sudoku
- Strongly connected component (Tarjans's Algo)
- Allocate minimum number of pages
- Minimum Cost Path
- Stock Buy and Sell – Multiple Transaction Allowed
- Burning Tree
- Next Smallest Palindrome
- Count Pairs in an Array
- Count Smaller elements
- Longest Prefix Suffix
- Number of distinct subsequences
- Wildcard string matching
- Circle of strings
- Longest repeating and non-overlapping substring
- Sum-string
- Sub-arrays with equal number of occurences
- Edit Distance
- Minimum Points To Reach Destination
- Doctor Strange
- Minimum sum partition
- Palindromic Partitioning
- Next Happy Number
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Strictly Increasing Array
- The Palindrome Pattern
- Very Tough Problem
- Kill Captain America
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Possible Paths in a Tree
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Phone directory
- Rohan's Love for Matrix
- Articulation Point - II
- Find all Critical Connections in the Graph
- Sorted Link List to BST
- Distribute candies in a binary tree
- IPL 2021 - Final
- Split Array Largest Sum
- Find number of closed islands
- Scrambled String
- Shortest Path by Removing K walls
- Find the String
- Maximum Number of Toys
- Articulation Point - I
- Kth Smallest Number in Multiplication Table
- Stock Buy and Sell – Max 2 Transactions Allowed
- Min Chars to Add for Palindrome
- Largest rectangular sub-matrix whose sum is 0
- Vertex Cover
- Maximum Connected group
- Aggressive Cows
- Expression Add Operators
- Burst Balloons
- Minimize Max Distance to Gas Station
- Candy
- Minimum Window Subsequence
- Account Merge
- 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
- Redundant Parenthesis
- Partition the Array
- Count Binary Strings With No Consecutive 1s
- Divide in Incremental Groups
- Max min Height
- Maximum Number of coins
- Median of the Subarrays
- Minimum BST Sum Subtree
- Special Digits
- Cake Distribution Problem
- Min Time
- Game Of Subsets
- Geekina Hate 1s
- Making A Large Island
- Meeting Rooms III
- Minimum Weight Cycle
- Count Linked List Nodes
- Delete node in Doubly Linked List
- Inorder Traversal
- Count Leaves in Binary Tree
- Check If Circular Linked List
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Implement Queue using array
- Doubly linked list Insertion at given position
- Binary Search
- Replace all 0's with 5
- Largest product
- Third largest element
- Preorder Traversal
- C++ STL | Set 5 (queue)
- Search a node in BST
- Find Number of Numbers
- Operating an array
- Linked List Insertion
- Play with an array
- Minimum element in BST
- Is Linked List Length Even?
- Identical Linked Lists
- Maximum in Struct Array
- Queue Reversal
- Triplet Family
- Sum of Binary Tree
- Insert in Middle of Linked List
- Count Non-Leaf Nodes in Tree
- Product of array elements
- Start Coding
- Count Odd Even
- Decimal to binary
- Bit Difference
- Power of 2
- Reverse array in groups
- Search an Element in an array
- Searching an element in a sorted array
- Check if a string is Isogram or not
- Check if strings are rotations of each other or not
- Maximum Occuring Character
- Sum of numbers in string
- Reverse a String
- Union of two arrays
- Check if two arrays are equal or not
- Print first n Fibonacci Numbers
- C++ Hello World
- Find duplicates under given constraints
- Sort The Array
- Alternative Sorting
- Check for subsequence
- The problem of identical arrays
- Immediate Smaller Element
- Count the characters
- Largest Element in Array
- Cyclically rotate an array by one
- Find minimum and maximum element in an array
- GCD of Array
- Find unique element
- Check set bits
- Set kth bit
- LCM And GCD
- LCM of given array elements
- Leap Year
- Binary number to decimal number
- Prime Number
- Sieve of Eratosthenes
- Multiply 2 matrices
- Disk Placement
- Reverse an Array
- Palindromic Array
- Multiply Matrices
- Print alternate elements of an array
- Perfect Arrays
- Find Index
- Sum of Array
- Sum of Series
- Print Elements of Array
- At least two greater elements
- Fascinating Number
- Value equal to index value
- Compete the skills
- Swap kth elements
- Smaller and Larger
- Average in a stream
- Print the left element
- Display longest name
- Arrays (Sum of array)
- C++ Array (print an element) | Set 2
- Java Arrays | Set 1
- Count of smaller elements
- GCD of two numbers
- Armstrong Numbers
- Greatest of three numbers
- Reverse digits
- C++ 2-D Arrays | Set-1
- Swap two numbers
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