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prajwalkandekar123
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106 submissions in current year
SCHOOL (1)
BASIC (54)
EASY (348)
MEDIUM (613)
HARD (116)
- Reverse alternate nodes in Link List
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Add 1 to a Linked List Number
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Quick Sort on Linked List
- Insert in Sorted Circular Linked List
- QuickSort on Doubly Linked List
- Count BST nodes that lie in a given range
- Merge Sort
- Quick Sort
- Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Delete without head pointer
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Heap Sort
- Merge two sorted linked lists
- Sum Tree
- Construct Binary Tree from Parent Array
- Connect Nodes of Levels
- Flattening a Linked List
- Diagonal Tree Traversal
- 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
- Absolute List Sorting
- Two Stacks in an Array
- Binary Heap Operations
- Max sum path in two arrays
- 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
- Max sum in the configuration
- Get Min from Stack
- Gas Station
- Wildcard Pattern Matching
- Linked List to Binary Tree
- Generate IP Addresses
- Check if subtree
- Kth smallest element in a Matrix
- Is Binary Tree Heap
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Additive sequence
- Largest BST
- Count Palindromic Subsequences
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Strongly Connected
- Print matrix in diagonal pattern
- Rat in a Maze Problem - I
- Bipartite Graph
- Closest in BST
- BST with Dead End
- Pots of Gold Game
- Merge two BST 's
- Count distinct elements in every window
- Merge k Sorted Arrays
- Root to leaf paths sum
- Longest Palindrome in Linked List
- Bridge edge in a graph
- Find triplets with zero sum
- Sort a stack
- Duplicate Subtree
- Top View of Binary Tree
- k-th Smallest in BST
- Level order traversal
- Peak element
- Polynomial Addition
- Delete nodes greater than k
- Merge Sort for Linked List
- Union of Two Linked Lists
- Euler Circuit in an Undirected Graph
- Euler circuit and Path
- Ancestors in Binary Tree
- Binary Tree to CDLL
- Pair Sum in BST
- Root to Leaf Paths
- Complete Binary Tree
- Populate Inorder Successor for all nodes
- XOR Linked List
- Counting elements in two arrays
- Linked List that is Sorted Alternatingly
- K Sum Paths
- Foldable Binary Tree
- 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
- Isomorphic Trees
- Maximum path sum from any node
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Normal BST to Balanced BST
- Duplicate Subtrees
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- ZigZag Tree Traversal
- Vertical Width of a Binary Tree
- Maximum sum of Non-adjacent nodes
- Mother Vertex
- Ceil in BST
- Count set bits
- Gray to Binary Conversion
- Tower Of Hanoi
- Reverse array in groups
- Smallest Positive Missing
- Maximum occured integer
- Wave Array
- Possible Words From Phone Digits
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Index
- Stock buy and sell
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Binary Array Sorting
- Count Inversions
- Two Repeated Elements
- Union of 2 Sorted Arrays
- Indexes of Subarray Sum
- Count the number of possible triangles
- Triplet Sum in Array
- Number of pairs
- Merge Without Extra Space
- Level of Nodes
- Make Matrix Beautiful
- Boolean Matrix
- Spirally traversing a matrix
- Search in a sorted Matrix
- Rotate by 90 degree
- Determinant of a Matrix
- Distance of nearest cell having 1
- Unit Area of largest region of 1's
- Subarray with 0 sum
- Subarray range with given sum
- Sort Elements by Decreasing Frequency
- Longest Consecutive Subsequence
- Strings Rotations of Each Other
- Case-specific Sorting of Strings
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Nearly sorted
- Activity Selection
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Black and White
- Unique Subsets
- M-Coloring Problem
- Minimum Jumps
- Detect Cycle using DSU
- Stickler Thief
- Ways to Reach the n'th Stair
- Optimal Strategy For A Game
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Number of Unique Paths
- Sort according to an Array
- Allocate Minimum Pages
- Preorder to BST
- X Total Shapes
- Zero Sum Subarrays
- Find whether path exist
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Nth Catalan Number
- Rotten Oranges
- Count subsequences of type a^i, b^j, c^k
- Maximize The Cut Segments
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Top K Frequent in Array
- Closest Three Sum
- Word Break
- Stock Buy and Sell – Multiple Transaction Allowed
- Word Search
- Prerequisite Tasks
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Paths to reach origin
- Complement
- Maximum Sub Array
- Pascal Triangle
- Maximum Index
- Number of subarrays with maximum values in given range
- Flip Bits
- Top k numbers in a stream
- Maximize Number of 1's
- Sum of Middle elements of two sorted arrays
- Equivalent Sub-Arrays
- Single Among Doubles in a Sorted
- Consecutive 1's not allowed
- Split the Array
- Count Occurences of Anagrams
- Count of Subarrays
- Single Among Doubles
- Pythagorean Triplet
- Painting the Fence
- Search in Rotated Sorted Array
- Smallest number with at least n trailing zeroes in factorial
- Count pairs Sum in matrices
- Sum of bit differences
- Count Full Binary Trees
- Maximize The Array
- Form the Largest Number
- Alternate Vowel and Consonant String
- Add Binary Strings
- Super Primes
- Maximum Product Subarray
- Longest subarray with sum divisible by K
- Check if a string is repetition of its substring of k-length
- 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
- Form a palindrome
- Nuts and Bolts Problem
- Longest Subarray with Sum K
- Transform String
- Number of positive integral solutions
- Sum of two large numbers
- Max Sum without Adjacents
- Shuffle integers
- Find the N-th character
- k largest elements
- Sum of XOR of all pairs
- Magnet Array Problem
- Longest Common Substring
- Smallest distinct window
- Longest substring with distinct characters
- Longest Substring with K Uniques
- Longest Palindrome in a String
- K-th element of two Arrays
- Arranging the array
- String formation from substring
- Rod Cutting
- K closest elements
- Minimum swaps and K together
- Maximize the sum of selected numbers from a sorted array to make it empty
- LCS of three strings
- Longest Palindromic Subsequence
- Largest Sum Subarray of Size at least K
- First negative in every window of size k
- Minimum sum
- Not a subset sum
- Build the smallest
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Reaching the heights
- Minimum Deletions
- A difference of values and indexes
- Print N-bit binary numbers having more 1s than 0s
- Nine Divisors
- Valid Substring
- Find patterns
- Permutations of a String
- Number following a pattern
- Previous number in one swap
- Friends Pairing Problem
- Lexicographically smallest string
- Sum of Products
- Subarrays Product Less than K
- Unique Number II
- Modular Exponentiation
- Game of XOR
- Largest prime factor
- 3 Divisors
- Maximum Tip Calculator
- Modified Game of Nim
- Minimum number of deletions and insertions
- Maximize dot product
- Max Sum Increasing Subsequence
- Minimum cost to fill given weight in a bag
- Coin Change (Count Ways)
- Sequence of Sequence
- Sieve of Eratosthenes
- String Subsequence
- Mobile numeric keypad
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Perfect Sum Problem
- Smallest number
- Trail of ones
- Power Of 2 and Subsequences
- Firing employees
- Shreyansh and his bits
- K-Palindrome
- Longest subsequence-1
- Power Set
- Minimum Cost To Make Two Strings Identical
- Knapsack with Duplicate Items
- nCr
- Number of ways
- Subsets with XOR value
- Geek and its Game of Coins
- Maximum path sum in matrix
- Minimum steps to destination
- Partition Equal Subset Sum
- Longest Bitonic subsequence
- Min Coin
- Count possible ways to construct buildings
- Count digit groupings of a number
- Probability of Knight
- Array Pair Sum Divisibility Problem
- Magic Triplets
- Brain Game
- Fill up buckets
- Matchsticks game
- Killing Spree
- Subset Sums
- Unique partitions
- Fill the Tank
- Akku and Binary Numbers
- Number of paths
- Nth Natural Number
- Knight Walk
- Stepping Numbers
- Permutation with Spaces
- Number of paths in a matrix with k coins
- LCM Triplet
- Return two prime numbers
- Fact Digit Sum
- Jumping Numbers
- A Game of LCM
- Party in Town
- Game with String
- Count even length
- Grouping Of Numbers
- Find the Safe Position
- Smith Number
- Next Permutation
- Missing number in matrix
- Smaller on Left
- Rotate matrix elements clockwise
- Maximum sum of hour glass
- Geek and knots
- Filling Bucket
- How Many X's?
- Exit Point in a Matrix
- Matrix Exponentiation
- Longest Repeating Subsequence
- Longest alternating subsequence
- Composite and Prime
- Finding Profession
- Rotate Each Row of Matrix K Times
- Decode the string
- Total Decoding Messages
- Stream First Non-repeating
- Maximum Sub-String after at most K changes
- Check If two Line segments Intersect
- 2D Hopscotch
- Villain Con
- Print leaf nodes from preorder traversal of BST
- Largest square formed in a matrix
- Tricky Subset Problem
- Longest Perfect Piece
- Rat Maze With Multiple Jumps
- Integral Points Inside Triangle
- Kth Largest in a Stream
- Geek and Strings
- Pairs of Non Coinciding Points
- The Smurfs
- Satisfy the equation
- Product of Primes
- Eulerian Path in an Undirected Graph
- Transitive closure of a Graph
- Replace O's with X's
- nCr mod M | Part 2
- Two odd Occuring
- Find all distinct subset (or subsequence) sums
- Rohan's Love for Matrix
- Queries on Strings
- Queries on a Matrix
- Broken blocks
- Traverse All Edges And Vertices
- Find the string in grid
- Shortest Uncommon Subsequence
- Help a Thief!!!
- Count the paths
- Floyd Warshall
- Negative weight cycle
- Flood fill Algorithm
- Form coils in a matrix
- Techfest and the Queue
- Largest subsquare surrounded by X
- Divisibility tree
- Base Equivalence
- Shortest Path between Cities
- Moving on grid
- Reverse Spiral Form of Matrix
- Geek and Number String
- Save Your Life
- Hamiltonian Path
- Recursively Remove Adjacent Duplicates
- Theft at World Bank
- Jump Game
- Subset Sum Problem
- Longest Palindromic Substring
- All Palindromic Partitions
- Bellman-Ford
- Subarrays with sum K
- Partition a Linked List around a given value
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Count pairs in array divisible by K
- Construct list using given q XOR queries
- 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
- Maximum GCD of siblings of a binary tree
- Single valued subtree
- BST to max heap
- BST to greater sum tree
- Paths from root with a specified sum
- Shortest Prime Path
- Division without using multiplication, division and mod operator
- 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
- Find and Replace in String
- Clone an Undirected Graph
- Min Cost Climbing Stairs
- Target Sum
- Overlapping Intervals
- Remove and Reverse
- Longest Possible Route in a Matrix with Hurdles
- Even Swap
- Reverse a Stack
- Farthest number
- K-th Largest Sum Contiguous Subarray
- Maximum Meetings in One Room
- Enemy
- Buy Maximum Stocks
- Concatenate Equal to Target
- Levels Of Game
- Smallest sum contiguous subarray
- Array Removals
- Find shortest safe route in a matrix
- Minimum Cost to cut a board into squares
- Stack Permutations
- Largest subtree sum in a tree
- Wine Buying and Selling
- Graph is Tree or Not
- Replace every element with the least greater element on its right
- Special Keyboard 2
- Maximum selections
- Minimum increment/decrement to make array non-Increasing
- Sort a k sorted doubly linked list
- Minimum Swaps
- Check if all levels of two trees are anagrams or not
- Number of Distinct Islands
- Shortest Distance in a Binary Maze
- Minimum Multiplications to reach End
- Number Of Enclaves
- Eventual Safe States
- City With the Smallest Number of Neighbors at a Threshold Distance
- Alex Travelling
- Number Of Islands
- Merging Details
- Number of Ways to Arrive at Destination
- Pattern
- Path With Minimum Effort
- Cheapest Flights Within K Stops
- Connecting the graph
- Shortest Path in Undirected Graph
- Maximum Stone Removal
- Shortest path in Directed Acyclic Graph
- Majority Element - More Than n/3
- Sum of Beauty of All Substrings
- Longest subarray with Atmost two distinct integers
- Frog Jump
- Asteroid Collision
- Aggressive Cows
- Combination Sum II
- Shortest Path in Weighted undirected graph
- Task Scheduler
- Minimum Absolute Difference In BST
- Number of Longest Increasing Subsequence
- Lemonade Change
- Maximum Sum Combination
- Non-overlapping Intervals
- Insert Interval
- Partition Array for Maximum Sum
- Longest String Chain
- Print Longest Increasing Subsequence
- Partitions with Given Difference
- GCD Array
- Minimize number of Students to be removed
- Maximum Value
- 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
- Find minimum number of Laptops required
- Geeks And The String
- Maximum Points Covered
- Find the longest string
- Maximum Profit By Choosing A Subset Of Intervals
- Minimum repeat to make substring
- Paint N Houses
- 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
- 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
- Distinct Difference
- 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
- Easy Task
- Maximum subset sum
- Palindrome with minimum sum
- Find Kth permutation
- Fraction pairs with sum 1
- Maximum Score of Array
- New Year Resolution
- Grinding Geek
- Flatten BST to sorted list
- Minimize the Difference
- Pairs violating the BST property
- Kth common ancestor in BST
- Kth Missing Positive Number in a Sorted Array
- Count Subarrays with given XOR
- Set Matrix Zeros
- Minimum cost to connect all houses in a city
- Count pairs with given sum
- Find All Triplets with Zero Sum
- Split array in three equal sum subarrays
- Find H-Index
- Count all triplets with given sum in sorted array
- Implement Pow
- K Closest Points to Origin
- Longest Bounded-Difference Subarray
- Reverse a linked list
- Frequency in 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
- Delete in a 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
- 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
- Decimal Equivalent of Binary Linked List
- Intersection Sorted Linked Lists
- Find Transition Point
- Queue using two Stacks
- Remove Duplicates from a Sorted Linked List
- Stack using two queues
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Stack using Linked List
- Implement stack using array
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Root to leaf path sum
- Square Root
- Nodes without a Sibling
- Lowest Common Ancestor in a BST
- Binary Search
- Largest subarray of 0's and 1's
- Remove Duplicates Sorted Array
- Level Order Line by Line
- Minimum Depth of a Binary Tree
- Remove Duplicates from an array
- Unique rows in boolean matrix
- Toeplitz matrix
- Remove every k'th node
- Leaves at Same Level or Not
- Third largest element
- Josephus problem
- You and your books
- Max distance between same elements
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Three way partitioning
- Inorder Successor in BST
- Index of an Extra Element
- Intersection of Two Linked Lists
- Insert in a Sorted List
- Split Linked List Alternatingly
- Sum of leaf nodes in BST
- More than n/k Occurrences
- Reverse Using Stack
- Symmetric Tree
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List
- Huffman Decoding-1
- Next Right Node
- Count Pairs whose sum is equal to X
- Find length of Loop
- Median of BST
- Leaf under budget
- Linked List Matrix
- Queue Reversal
- Reverse first K of a Queue
- Remove Half Nodes
- Closest Neighbour in BST
- Brothers From Different Roots
- Delete Mid of a Stack
- Product of an Array
- Swap the array elements
- Predict the Column
- Xoring and Clearing
- Reverse an Array
- Get min at pop
- Frequency Game
- First Set Bit
- Rightmost different bit
- Check K-th Bit
- Longest Consecutive 1's
- Power of 2
- Swap odd and even bits
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Floor in a Sorted Array
- Minimum Number in a sorted rotated array
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Transpose of Matrix
- Matrix Boundary Traversal
- Anagram
- Winner of an election
- String Rotated by 2 Places
- Isomorphic Strings
- Reverse Words
- Minimum indexed character
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Minimum Cost of ropes
- N meetings in one room
- Largest number with given sum
- Reach a given score
- Union-Find
- Count ways to N'th Stair
- Count number of hops
- First Repeating Element
- Union of Arrays with Duplicates
- Common Elements
- Check Equal Arrays
- Missing in Array
- Product array puzzle
- Roman Number to Integer
- Intersection of Arrays with Distinct
- Max Value Permutation
- Missing And Repeating
- Count the elements
- Find the closest number
- Common in 3 Sorted Arrays
- Sorted and Rotated Minimum
- Maximum no of 1's row
- Sum of elements between k1'th and k2'th smallest elements
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- String Duplicates Removal
- Min sum formed by digits
- Minimize the sum of product
- Missing number
- Chocolate Distribution Problem
- Count the triplets
- Find Pair Given Difference
- Pairs with difference k
- Swap and Maximize
- Bitonic Point
- Smallest subarray with sum greater than x
- Single Number
- Alternate Positive Negative
- Remaining String
- Convert a sentence into its equivalent mobile numeric keypad sequence
- Kth distance
- Remove Duplicates
- Nearest multiple of 10
- Reorganize The Array
- Second Largest
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Rotate Bits
- Sort Unsorted Subarray
- Find all pairs with a given sum
- Number of occurrence
- Maximum repeating number
- 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
- Find missing in second array
- String's Count
- Longest Common Prefix of Strings
- First Repeated Character
- Palindromic Subsequences
- 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
- Count the Zeros
- Merge two binary Max heaps
- Palindrome String
- Fitting The Array
- Pair with given sum in a sorted array
- Print Bracket Number
- Balanced string
- Shop in Candy Store
- Odd Even Problem
- Binary representation of next number
- Partition a number into two divisible parts
- Is Binary Number Multiple of 3
- Padovan Sequence
- Extract the Number from the String
- Minimum Operations
- Divisibility by 8
- Adding Array Elements
- Number of 1 Bits
- Armstrong Numbers
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Change Bits
- Swap two nibbles in a byte
- Copy Set Bits in Range
- Toggle bits in the given range
- Prime Number
- Party of Couples
- Shortest path from 1 to n
- Sum 1 to n Divisors
- Count numbers containing 4
- The Bit Game
- Reach the Nth point
- Minimum number of Coins
- Number Of Open Doors
- Break a number
- Perfect Numbers
- Nth item through sum
- Smallest number with sum of digits as N and divisible by 10^N
- Maximize Toys
- Largest number possible
- Recamans sequence
- The Palindrome Pattern
- Compare two fractions
- Form a number divisible by 3 using array digits
- Least Prime Factor
- Sum of First N Natural Numbers
- Recursive sequence
- Juggler Sequence
- Tom and Jerry
- Maximum Height Tree
- Summed Matrix
- Arithmetic Number
- Row with Minimum 1s
- Make Zeroes
- Surround the 1's
- Coverage of all Zeros in a Binary Matrix
- Help Ishaan
- Trace Path
- Inorder Traversal and BST
- Sequence Fun
- Letters Collection
- Help the Old Man!!!
- Print Pattern
- Primes sum
- Print the pattern
- Chicks in a Zoo
- Maximum Sum LCM
- K-Ary Tree
- Check if it is possible to convert one string into another with given constraints
- Minimum Exchange
- Earthquake and the Paint Shop
- Array to BST
- Sum of dependencies in a graph
- Count all possible paths from top left to bottom right
- Ball coloring
- Modified Numbers and Queries
- Fraction Trouble
- Sum of k smallest elements in BST
- Print Diagonally
- Find maximum volume of a cuboid
- Sum of two numbers without using arithmetic operators
- Even and Odd
- Search insert position of K in a sorted array
- Maximum number of 2X2 squares
- License Key Formatting
- Count the Substrings
- Find all possible paths from top to bottom
- Smallest Subset with Greater Sum
- Minimum Sum of Absolute Differences of Pairs
- Smallest window containing 0, 1 and 2
- Move Last Element to Front of a Linked List
- Insert an Element at the Bottom of a Stack
- Find pairs with given sum in doubly linked list
- Pattern 2
- Pattern 3
- Pattern 4
- Pattern 14
- Pattern 15
- Pattern 16
- Pattern 17
- Pattern 18
- Pattern 19
- Pattern 20
- Pattern 21
- Fibonacci series up to Nth term
- Pattern 12
- Pattern 22
- Stock Buy and Sell – Max one Transaction Allowed
- Maximum Depth Of Binary Tree
- Divisor Game
- 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
- Geek & Geekina Purchasing Ice Cream
- Toggle
- Last cell in a Matrix
- Balloon Everywhere
- 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
- Wifi Range
- Minimum Number
- Minimum Integer
- Seating Arrangement
- String Mirror
- Make Palindrome
- Binary Modulo
- Total Cuts
- Bit Magic
- Array Operations
- Dominant Pairs
- Total Traversal Time
- Ticket Counter
- Unique Number of Occurrences
- Unleashing the Array's Potential
- Two Smallests in Every Subarray
- Split an array into two equal Sum subarrays
- Largest Pair Sum
- Two Swaps
- Meeting Rooms
- 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
- Find Only Repetitive Element from 1 to n-1
- Unique Number I
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Min distance between two given nodes of a Binary Tree
- Serialize and deserialize a binary tree
- Max rectangle
- Subtraction in Linked List
- Distinct occurrences
- LRU Cache
- AVL Tree Insertion
- Partition array to k subsets
- Maximum subset XOR
- Alien Dictionary
- Smallest range in K lists
- AVL Tree Deletion
- Merge Sort on Doubly Linked List
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Max Path Sum 2 Special Nodes
- Number of Turns 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
- Find median in a stream
- Solve the Sudoku
- Word Ladder I
- Median of 2 Sorted Arrays of Different Sizes
- Burning Tree
- Merge Without Extra Space
- Next Smallest Palindrome
- Count Pairs in an Array
- Palindrome SubStrings
- Search Pattern
- Count Smaller elements
- Longest Prefix Suffix
- Number of distinct subsequences
- Wildcard string matching
- Longest repeating and non-overlapping substring
- Sum-string
- Edit Distance
- Minimum Points To Reach Destination
- Minimum sum partition
- Number Formation
- Palindromic Partitioning
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Strictly Increasing Array
- Median in a row-wise sorted Matrix
- Kill Captain America
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Bike Racing
- Possible Paths in a Tree
- Word Break - 2
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Phone directory
- Closest Palindrome
- Articulation Point - II
- Assignment Problem
- Longest Path in a matrix
- Word Wrap
- Maximum sum Rectangle
- Smallest Positive Integer that can not be represented as Sum
- 132 Geeky Buildings
- Search Pattern (Rabin-Karp Algorithm)
- Minimum X (xor) A
- Find all Critical Connections in the Graph
- Sorted Linked List to BST
- Array Partition
- Count occurrences of a given word in a 2-d array
- Reverse a sublist of a linked list
- Word Ladder II
- Distribute candies in a binary tree
- Split Array Largest Sum
- Find number of closed islands
- Scrambled String
- Shortest Path by Removing K walls
- Maximum Number of Toys
- Articulation Point - I
- Rearrange the array
- Stock Buy and Sell – Max 2 Transactions Allowed
- Min Chars to Add for Palindrome
- Largest rectangular sub-matrix whose sum is 0
- Minimum time to fulfil all orders
- Geek in a Maze
- Vertex Cover
- Maximum Connected group
- MaxSkill
- Minimize Max Distance to Gas Station
- Candy
- 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
- Walls Coloring II
- Redundant Parenthesis
- Partition the Array
- Max min Height
- Maximum Number of coins
- Median of the Subarrays
- Minimum BST Sum Subtree
- Special Digits
- Cake Distribution Problem
- Game Of Subsets
- Geekina Hate 1s
- Making A Large Island
- Print Linked List
- Find Length of Linked List
- Size of Binary Tree
- Count Leaves in Binary Tree
- Postorder Traversal
- Queue using Linked List
- Queue Using Array
- Replace all 0's with 5
- Preorder Traversal
- First Occurence
- Sum Except First and Last
- Search a node in BST
- Linked List Insertion At End
- Minimum element in BST
- Is Linked List Length Even?
- Identical Linked Lists
- Triplet Family
- Insert in Middle of Linked List
- Count Odd and Even
- Bit Difference
- Number is sparse or not
- Array Search
- Sorted Array Search
- Reverse a String
- First n Fibonacci
- Alternative Sorting
- Immediate Smaller Element
- Uncommon characters
- Quick Left Rotation
- Repeated Character
- Elements in the Range
- Largest Element in Array
- Rotate Array by One
- Game with nos
- One odd Occuring
- Ishaan Loves Chocolates
- Array Subset
- Rotating an Array
- Min and Max in Array
- Set kth bit
- LCM And GCD
- Factorial
- Count Squares
- Middle of Three
- Pattern Jumping
- Max Min
- Pattern 1
- Pattern 5
- Pattern 6
- Pattern 7
- Pattern 8
- Pattern 10
- Pattern 11
- Pattern 13
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