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9971jiyagarg
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162 submissions in current year
SCHOOL (2)
BASIC (23)
EASY (187)
MEDIUM (313)
HARD (40)
- 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
- Insert in Sorted Circular Linked List
- Count BST nodes that lie in a given range
- Quick Sort
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Merge two sorted linked lists
- Sum Tree
- Flattening a Linked List
- Diagonal Tree Traversal
- Tree Boundary Traversal
- Directed Graph Cycle
- Undirected Graph Cycle
- Two Stacks in an Array
- The Celebrity Problem
- Largest subarray with 0 sum
- Topological sort
- Merge K sorted linked lists
- Find the number of islands
- Find kth element of spiral matrix
- Get Min from Stack
- Serialize and deserialize a binary tree
- Gas Station
- Wildcard Pattern Matching
- Clone a Binary Tree
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Additive sequence
- Largest BST
- Sorted subsequence of size 3
- Multiply two strings
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze Problem - I
- Closest in BST
- BST with Dead End
- Merge two BST 's
- Count distinct elements in every window
- Merge k Sorted Arrays
- Root to leaf paths sum
- Bridge edge in a graph
- Find triplets with zero sum
- Sort a stack
- Top View of Binary Tree
- k-th Smallest in BST
- Polynomial Addition
- Union of Two Linked Lists
- Euler Circuit in an Undirected Graph
- Pair Sum in BST
- Root to Leaf Paths
- Counting elements in two arrays
- K Sum Paths
- Leftmost and rightmost nodes of binary tree
- Construct Tree from Inorder & Preorder
- Count the nodes at distance K from leaf
- Isomorphic Trees
- Maximum path sum from any node
- Predecessor and Successor
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- ZigZag Tree Traversal
- Mother Vertex
- Gray to Binary equivalent
- Smallest Positive Missing
- Power Of Numbers
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Rotate Array
- Kadane's Algorithm
- Count Inversions
- Two Repeated Elements
- Union of 2 Sorted with Duplicates
- 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
- Distance of nearest cell having 1
- Subarray with 0 sum
- Sort Elements by Decreasing Frequency
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Activity Selection
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- M-Coloring Problem
- Minimum Jumps
- Stickler Thief
- Optimal Strategy For A Game
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Allocate Minimum Pages
- 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
- Top K Frequent in Array
- Word Break
- Stock Buy and Sell – Multiple Transaction Allowed
- Word Search
- Paths to reach origin
- Maximum Index
- 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
- Pythagorean Triplet
- Painting the Fence
- Sum of bit differences
- Marks of PCM
- Maximum Product Subarray
- Remove minimum elements
- 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
- Check if frequencies can be equal
- Form a palindrome
- Longest Subarray with Sum K
- Cutting Binary String
- Max Sum without Adjacents
- k largest elements
- Sum of XOR of all pairs
- Longest Common Substring
- Longest substring with distinct characters
- Longest Substring with K Uniques
- Longest Palindrome in a String
- K-th element of two Arrays
- Arranging the array
- Rod Cutting
- K closest elements
- 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
- Equalize the Towers
- Minimum sum
- Minimize the Heights II
- Transform to prime
- Minimum Deletions
- Print N-bit binary numbers having more 1s than 0s
- Valid Substring
- Permutations of a String
- Number following a pattern
- Sum of Products
- Subarrays Product Less than K
- Unique Number II
- Bleak Numbers
- Game of XOR
- Largest prime factor
- Modified Game of Nim
- Maximize dot product
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Sequence of Sequence
- Mobile numeric keypad
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Dice throw
- Perfect Sum Problem
- K-Palindrome
- Power Set
- Knapsack with Duplicate Items
- nCr
- Partition Equal Subset Sum
- Longest Bitonic subsequence
- Count possible ways to construct buildings
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Brain Game
- Matchsticks game
- Subset Sums
- Number of paths
- Number of paths in a matrix with k coins
- Game with String
- Smith Number
- Next Permutation
- Longest Repeating Subsequence
- Stream First Non-repeating
- Segregate even and odd nodes in a Linked List
- Print leaf nodes from preorder traversal of BST
- Eulerian Path in an Undirected Graph
- Transitive closure of a Graph
- Replace O's with X's
- Two numbers with odd occurrences
- Traverse All Edges And Vertices
- Find the string in grid
- Count the paths
- Floyd Warshall
- Flood fill Algorithm
- Techfest and the Queue
- Shortest Source to Destination Path
- Base Equivalence
- Reverse Spiral Form of Matrix
- Police and Thieves
- Save Your Life
- Image Multiplication
- Hamiltonian Path
- Subset Sum Problem
- All Palindromic Partitions
- Bellman-Ford
- Subarrays with sum K
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Maximum XOR of two numbers in an array
- Number of Provinces
- Prefix match with other strings
- Find duplicate rows in a binary matrix
- Find rectangle with corners as 1
- Paths from root with a specified sum
- Shortest Prime Path
- Insertion Sort for Singly Linked List
- Anti Diagonal Traversal of Matrix
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- Clone an Undirected Graph
- Min Cost Climbing Stairs
- Find k-th smallest element in given n ranges
- Reverse a Stack
- Maximum Meetings in One Room
- Enemy
- Max Equal sum of 3 Stacks
- Buy Maximum Stocks
- Smallest sum contiguous subarray
- Find shortest safe route in a matrix
- Stack Permutations
- Graph is Tree or Not
- Replace every element with the least greater element on its right
- 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
- Number Of Islands
- Number of Ways to Arrive at Destination
- Shortest Path in Undirected Graph
- Shortest path in Directed Acyclic Graph
- Majority Element II
- Koko Eating Bananas
- Minimal Cost
- Aggressive Cows
- Smallest Divisor
- Task Scheduler
- Hands of Straights
- Minimum Absolute Difference In BST
- Lemonade Change
- Maximum Sum Combination
- Largest Divisible Subset
- Minimize number of Students to be removed
- Maximum Value
- Absolute difference divisible by K
- Make array elements unique
- Minimum repeat to make substring
- Length of the longest subarray with positive product
- Count number of free cell
- Walls Coloring
- Water the plants
- Geeks Island
- Apple Sequences
- Unique Paths in a Grid
- Maximum Intersecting Lines
- Remove the balls
- Prefix Suffix String
- Count Total Setbits
- Tree Transformation
- Find Kth permutation
- New Year Resolution
- Grinding Geek
- Flatten BST to sorted list
- Minimize the Difference
- Pairs violating the BST property
- Kth common ancestor in BST
- Sum Equals Length
- Count Subarrays with given XOR
- Minimum cost to connect all houses in a city
- Find All Triplets with Zero Sum
- Split array in three equal sum subarrays
- Count all triplets with given sum in sorted array
- Implement Pow
- K Closest Points to Origin
- Longest Valid Word with All Prefixes
- Lexicographically Largest String After K Deletions
- Group Balls by Sequence
- Reverse a linked list
- Frequency in a Linked List
- Delete N nodes after M nodes of a linked list
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Delete in a Doubly Linked List
- Inorder Traversal
- Check for BST
- Right View of Binary Tree
- Mirror Tree
- Delete without head pointer
- Height of Binary Tree
- Left View of Binary Tree
- Delete Middle of Linked List
- Decimal Equivalent of Binary Linked List
- Find Transition Point
- Remove Duplicates from a Sorted Linked List
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Square Root
- Lowest Common Ancestor in a BST
- Largest subarray of 0's and 1's
- 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
- Three way partitioning
- Level order traversal
- Inorder Successor in BST
- Disjoint set (Union-Find)
- Sum of leaf nodes in BST
- More than n/k Occurrences
- Symmetric Tree
- Delete Alternate Nodes
- 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
- Closest Neighbour in BST
- Delete Mid of a Stack
- Predict the Column
- Xoring and Clearing
- Reverse an Array
- Frequency in Queue
- Frequency Game
- First Set Bit
- Rightmost different bit
- K-th Bit is Set or Not
- Wave Array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Roof Top
- Print adjacency list
- Transpose of Matrix
- Winner of an election
- Reverse Words
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Minimum Cost of ropes
- N meetings in one room
- Reach a given score
- Count ways to N'th Stair
- Count number of hops
- Missing in Array
- Product array puzzle
- Max Value Permutation
- Missing And Repeating
- Count the elements
- Find the closest number
- Adding Ones
- Move All Zeroes to End
- Min sum formed by digits
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- Count the triplets
- Find Pair Given Difference
- Pairs with difference k
- Maximum Sum Bitonic Subsequence
- Permutations in array
- Swap and Maximize
- Alternate Positive Negative
- Kth distance
- Sorting Employees
- Toppers Of Class
- Facing the sun
- Second Largest
- Two Sum - Pair with Given Sum
- Rotate Bits
- Number of occurrence
- K-Pangrams
- Reversing the equation
- Does array represent Heap
- Sum Pair closest to target
- Find missing in second array
- String's Count
- Counts Zeros Xor Pairs
- Substrings with same first and last characters
- Segregate 0s and 1s
- Play With OR
- At Least K Occurrences
- Count the Zeros
- Distinct absolute array elements
- Palindrome String
- Total count
- Pair with given sum in a sorted array
- Easy string
- Minimum Operations
- Divisibility by 8
- Number of 1 Bits
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Copy Set Bits in Range
- Maximum Sum Problem
- Party of Couples
- Sum 1 to n Divisors
- Sieve of Eratosthenes
- Reach the Nth point
- Minimum number of Coins
- Smallest number with sum of digits as N and divisible by 10^N
- Recamans sequence
- Count ways to express N as the sum of 1,3 and 4
- Form a number divisible by 3 using array digits
- Least Prime Factor
- Sum of First N Natural Numbers
- BBT counter
- Find nth root of m
- Recursive sequence
- Maximum Diamonds
- Arithmetic Number
- Row with Minimum 1s
- Surround the 1's
- Trace Path
- Sequence Fun
- Letters Collection
- Print the pattern
- Check if it is possible to convert one string into another with given constraints
- Array to BST
- Sum of k smallest elements in BST
- Print Diagonally
- Find all possible paths from top to bottom
- 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
- Bus Conductor
- Fibonacci series up to Nth term
- Maximum Depth Of Binary Tree
- Graph and Vertices
- Maximum Frequency
- Minimize the sum
- Last modified ball
- Transform to Sum Tree
- Find the first node of loop in linked list
- Type it!
- Geek & Geekina Purchasing Ice Cream
- Toggle
- Virus Infection
- Reverse both parts
- Make the array beautiful
- Is it Fibonacci
- Maximum Identical Bowls
- Bus Conductor
- Minimum Number
- Ticket Counter
- Unique Number of Occurrences
- Split an array into two equal Sum subarrays
- First Word
- Maximize partitions in a String
- Count pairs with given sum
- 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
- Find Only Repetitive Element from 1 to n-1
- Unique Number I
- Linked List Group Reverse
- Clone List with Next and Random
- Min distance between two given nodes of a Binary Tree
- Subtraction in Linked List
- Distinct occurrences
- LRU Cache
- Alien Dictionary
- Fixing Two nodes of a BST
- String Permutations
- Trapping Rain Water
- Smallest window containing all characters of another string
- Histogram Max Rectangular Area
- Find median in a stream
- Solve the Sudoku
- Burning Tree
- The Painter's Partition Problem-II
- Search Pattern (KMP-Algorithm)
- Wildcard string matching
- Edit Distance
- Minimum Points To Reach Destination
- Minimum sum partition
- Palindromic Partitioning
- Next Happy Number
- Matrix Chain Multiplication
- Strictly Increasing Array
- Median in a row-wise sorted Matrix
- Boolean Parenthesization
- Longest valid Parentheses
- Word Break - 2
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Word Wrap
- Minimum X (xor) A
- Find all Critical Connections in the Graph
- Distribute candies in a binary tree
- Split Array Largest Sum
- Find number of closed islands
- Stock Buy and Sell – Max 2 Transactions Allowed
- Candy
- Account Merge
- Implement stack using array
- Queue Using Array
- Doubly linked list Insertion at given position
- Count zeros in a sorted matrix
- Peak element
- Minimum element in BST
- Is Linked List Length Even?
- Triplet Family
- Insert in Middle of Linked List
- Reverse a String
- First n Fibonacci
- Print Elements of Array
- Alternative Sorting
- Value equal to index value
- Immediate Smaller Element
- Display longest name
- Find element at a given Index
- Largest Element in Array
- Rotate Array by One
- Game with nos
- Tywin's War Strategy
- Min and Max in Array
- Max Min
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