jyoti369
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BASIC (28)
EASY (133)
MEDIUM (288)
HARD (165)
- Longest Even Length Substring
- Shivani hates Consecutive numbers
- Minimum Moves
- 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
- Linked List in Zig-Zag fashion
- Detect Loop in linked list
- Insert in Sorted Circular Linked List
- 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
- Merge two sorted linked lists
- Add all greater values to every node in a BST
- Sum Tree
- Construct Binary Tree from Parent Array
- Connect Nodes of Levels
- Flattening a Linked List
- Diagonal Tree Traversal
- Tree Boundary Traversal
- Reverse alternate levels of a perfect binary tree
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Maximum difference between node and its ancestor
- 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 kth element of spiral matrix
- Max sum in the configuration
- Get Min from Stack
- Serialize and deserialize a binary tree
- Gas Station
- Wildcard Pattern Matching
- Linked List to Binary Tree
- Generate IP Addresses
- Check if subtree
- Extreme nodes in alternate order
- Kth smallest element in a Matrix
- Clone a Binary Tree
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Largest BST
- Interleaved Strings
- Sorted subsequence of size 3
- Count Palindromic Subsequences
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Palindrome Linked List
- Strongly Connected
- Print matrix in diagonal pattern
- Rat in a Maze Problem - I
- Bipartite Graph
- Closest in BST
- Pots of Gold Game
- Delete keys in a Linked list
- Merge two BST 's
- Count distinct elements in every window
- Merge k Sorted Arrays
- Root to leaf paths sum
- Bridge edge in a graph
- Print Nodes having K leaves
- Find triplets with zero sum
- Sort a stack
- Top View of Binary Tree
- k-th Smallest in BST
- Find Common Nodes in two BSTs
- Peak element
- Polynomial Addition
- Merge Sort for Linked List
- Ancestors in Binary Tree
- Binary Tree to CDLL
- Mountain Subarray Problem
- Pair Sum in BST
- Root to Leaf Paths
- Counting elements in two arrays
- Linked List that is Sorted Alternatingly
- Leftmost and rightmost nodes of binary tree
- Construct Tree from Inorder & Preorder
- Vertical sum
- Isomorphic Trees
- Maximum path sum from any node
- Predecessor and Successor
- Leaves to DLL
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Construct Tree from Preorder Traversal
- Check if two Nodes are Cousins
- ZigZag Tree Traversal
- Count Number of SubTrees having given Sum
- Coin Change - Minimum number of coins
- Swap Kth nodes from ends
- Mother Vertex
- Ceil in BST
- Count set bits
- Tower Of Hanoi
- Smallest Positive Missing
- Power Of Numbers
- 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
- Count Inversions
- Smallest Positive missing number
- Unique BST's
- Union of 2 Sorted Arrays
- Indexes of Subarray Sum
- Triplet Sum in Array
- Merge Without Extra Space
- Possible paths between 2 vertices
- Spirally traversing a matrix
- Search in a sorted Matrix
- Rotate by 90 degree
- Distance of nearest cell having 1
- Unit Area of largest region of 1's
- Subarray with 0 sum
- Subarrays with equal 1s and 0s
- Longest Consecutive Subsequence
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Nearly sorted
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- M-Coloring Problem
- Minimum Jumps
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Optimal Strategy For A Game
- Minimum number of jumps
- nCr
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Number of Unique Paths
- Equal Sum Partition
- Sort according to an Array
- Allocate Minimum Pages
- Find whether path exist
- Kth Smallest
- Shortest Common Supersequence
- Rotten Oranges
- Steps by Knight
- Count subsequences of type a^i, b^j, c^k
- Longest Substring Without Repeating Characters
- Maximize The Cut Segments
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Most Frequent Non Bad word
- Convert Integer to English Word
- Top K Frequent in Array
- Maximum Subarray Sum
- Closest Three Sum
- Word Break
- Generate Parentheses
- Word Search
- Word Boggle
- Prerequisite Tasks
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Sort 0s, 1s and 2s
- Maximum Index
- Sum of Subarrays
- Large Factorial
- Pythagorean Triplet
- Painting the Fence
- Search in Rotated Sorted Array
- Maximum Intervals Overlap
- Form the Largest Number
- Maximum Product Subarray
- Row with max 1s
- Column name from a given column number
- Palindrome SubStrings
- Form a palindrome
- Nuts and Bolts Problem
- Numbers with one absolute difference
- Longest Subarray with Sum K
- Count the Reversals
- Factorials of large numbers
- k largest elements
- Longest Common Substring
- Longest Palindrome in a String
- K-th element of two Arrays
- Possible groups
- Longest Arithmetic Subsequence
- Rod Cutting
- Min Swaps to Group 1s
- Minimize the Heights II
- First and Last Occurrences
- Next higher palindromic number using the same set of digits
- Valid Substring
- Permutations of a String
- Number following a pattern
- Friends Pairing Problem
- Subarrays Product Less than K
- Unique Number II
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Minimum cost to fill given weight in a bag
- Coin Change (Count Ways)
- String Subsequence
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Perfect Sum Problem
- Longest subsequence-1
- Power Set
- Knapsack with Duplicate Items
- nCr
- Maximum path sum in matrix
- Minimum steps to destination
- Partition Equal Subset Sum
- Array Pair Sum Divisibility Problem
- Count the number of ways to tile the floor of size n x m using 1 x m size tiles
- Matchsticks game
- Subset Sums
- Nth Natural Number
- Permutation with Spaces
- Path of greater than equal to k length
- Return two prime numbers
- Find nth root of m
- Jumping Numbers
- Next Permutation
- Longest Repeating Subsequence
- Longest alternating subsequence
- Decode the string
- Is Sudoku Valid
- Total Decoding Messages
- Stream First Non-repeating
- Largest square formed in a matrix
- Rohan's Love for Matrix
- Queries on a Matrix
- Express as sum of power of natural numbers
- Floyd Warshall
- Recursively Remove Adjacent Duplicates
- Geek and His Pairs
- Make it One
- Subset Sum Problem
- Longest Palindromic Substring
- All Palindromic Partitions
- Bellman-Ford
- Subarrays with sum K
- Rearrange characters
- Maximum XOR of two numbers in an array
- Maximum sum leaf to root path
- Find duplicate rows in a binary matrix
- Minimize the Heights I
- IPL 2021 - Match Day 2
- Second smallest number
- Maximum Triplet product
- Distinct Coloring
- Smallest distinct window
- Maximum Weight Node
- Can Make Triangle
- Cities and Teleporters
- Buy Maximum Stocks
- Concatenate Equal to Target
- Replace every element with the least greater element on its right
- Next element with greater frequency
- Count number of substrings
- Check if all levels of two trees are anagrams or not
- Shortest Path in Undirected Graph
- Minimum Window Substring
- Minimum X (xor) A
- 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
- Max rectangle
- Subtraction in Linked List
- Distinct occurrences
- LRU Cache
- Box Stacking
- Points in Straight Line
- AVL Tree Insertion
- Partition array to k subsets
- Maximum subset XOR
- Longest Palindromic Substring in Linear Time
- Alien Dictionary
- Smallest range in K lists
- AVL Tree Deletion
- 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
- Strongly connected component (Tarjans's Algo)
- Minimum Cost Path
- Word Ladder I
- Median of 2 Sorted Arrays of Different Sizes
- Burning Tree
- Merge Without Extra Space
- Next Smallest Palindrome
- The Painter's Partition Problem-II
- Distinct palindromic substrings
- Ugly Numbers
- Count Smaller elements
- Largest rectangle of 1s with swapping of columns allowed
- Number of distinct subsequences
- Minimum number to make median X
- Wildcard string matching
- Print all LCS sequences
- Edit Distance
- Minimum number of elements
- Minimum Points To Reach Destination
- Doctor Strange
- Minimum sum partition
- Number Formation
- Palindromic Partitioning
- Next Happy Number
- Stock Buy and Sell – Max K Transactions Allowed
- Check Tree Traversal
- Matrix Chain Multiplication
- Strictly Increasing Array
- Bit Difference
- Median in a row-wise sorted Matrix
- Very Tough Problem
- Kill Captain America
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Longest Zig-Zag Sub Sequence
- Bike Racing
- Possible Paths in a Tree
- Word Break - 2
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Joey doesn't share food
- nCr mod M | Part 1
- Convex Hull
- Phone directory
- Next Optimal Move in Tic Tac Toe
- Adventure in a Maze
- Closest Palindrome
- Articulation Point - II
- Optimal binary search tree
- Find the pattern
- Assignment Problem
- Travelling Salesman Problem
- Longest Path in a matrix
- Akku and Arrays
- Interesting Queries
- Word Wrap
- Hexadecimal to decimal counter
- Create your own Calculator
- Let's Play!!!
- Nth digit of pi
- Find the Maximum Flow
- Find minimum s-t cut in a flow network
- Smallest Positive Integer that can not be represented as Sum
- Secret Cipher
- 132 Geeky Buildings
- Corona Vaccine
- Shortest Range In BST
- Elixir of Life
- Number of subsets with product less than k
- Maximum XOR subarray
- Longest substring to form a Palindrome
- Minimum X (xor) A
- Find all Critical Connections in the Graph
- Word Break (Trie)
- Minimum operations to convert array A to B
- Sorted Linked List to BST
- Longest Increasing Path in a Matrix
- Palindrome Pairs
- Array Partition
- Count occurrences of a given word in a 2-d array
- Number of distinct words with K maximum contiguous vowels
- Reverse a sublist of a linked list
- Word Ladder II
- Distribute candies in a binary tree
- Shortest Unique prefix for every word
- Search Query Auto Complete
- IPL 2021 - Match Day 6 - Semi Final
- IPL 2021 - Final
- Split Array Largest Sum
- Find number of closed islands
- Scrambled String
- Shortest Path by Removing K walls
- Count the number of subarrays
- Find the String
- Largest Sum Cycle
- Maximum Number of Toys
- Articulation Point - I
- Concatenate two numbers
- Palindrome Pairs
- Kth Smallest Number in Multiplication Table
- Rearrange the array
- Min Chars to Add for Palindrome
- Optimum location of point to minimize total distance
- Subset sums between the given range
- Maximum difference between pair in a matrix
- Largest rectangular sub-matrix whose sum is 0
- Minimum swap required to convert binary tree to binary search tree
- Minimum time to fulfil all orders
- Maximum number of overlapping Intervals
- Longest Path in a Directed Acyclic Graph
- Cut woods
- Geek in a Maze
- Partition a set into two subsets such that the difference of subset sums is minimum (Set-2)
- K Centers Problem
- Maximum Triple Product
- Maximum Connected group
- Expression Add Operators
- MaxSkill
- Minimum Cost to Merge Stones
- Minimize Max Distance to Gas Station
- LFU cache
- Count Reverse Pairs
- Candy
- Account Merge
- Maximum XOR With an Element From Array
- Chocolates Pickup
- Better String
- Count Lucky Permutations
- Count the Substring
- Minimum Number Of Sprinkler
- Select Nodes
- Largest Sum Cycle
- Greater or Less
- Fixing Two swapped nodes of a BST
- Sahil loves gfg
- Sahil love good scorer
- Reverse a linked list
- Frequency in a Linked List
- Delete N nodes after M nodes of a linked list
- Pairwise swap elements of a linked list
- Node at a given index in 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
- K distance from root
- Mirror Tree
- Two Mirror Trees
- Maximum Width of Tree
- Height of Binary Tree
- Balanced Tree Check
- Kth from End of Linked List
- Middle of a Linked List
- Left View of Binary Tree
- Delete Middle of Linked List
- Transform to Sum Tree
- 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
- 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
- Run Length Encoding
- Largest subarray of 0's and 1's
- Level Order Line by Line
- BST Keys in a Range
- Print all possible strings
- Minimum Depth of a Binary Tree
- Remove Duplicates from an array
- Odd even level difference
- Binary Tree to BST
- Unique rows in boolean matrix
- Leaves at Same Level or Not
- Convert to Roman No
- Match specific pattern
- Josephus problem
- Expression Tree
- Generate Grey Code Sequences
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Max Level Sum in Binary Tree
- String Modification
- Longest consecutive sequence in Binary tree
- Level order traversal
- Inorder Successor in BST
- Index of an Extra Element
- Intersection of Two Linked Lists
- Insert in a Sorted List
- Level of a Node in Binary Tree
- Full Binary Tree
- Symmetric Tree
- Delete Alternate Nodes
- Count Pairs whose sum is equal to X
- Maximum Node Level
- Find length of Loop
- Median of BST
- Queue Reversal
- Reverse first K of a Queue
- Remove Half Nodes
- Height of Spiral Tree
- Sum of Left Leaf Nodes
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Floor in a Sorted Array
- Matrix Boundary Traversal
- String Rotated by 2 Places
- Reverse Words
- Parenthesis Checker
- Generate Binary Numbers
- K largest elements
- Minimum Cost of ropes
- N meetings in one room
- Reach a given score
- Count ways to N'th Stair
- Count number of hops
- Union of Arrays with Duplicates
- Two Sum
- Missing in Array
- Needle in a Haystack
- Roman Number to Integer
- Compare Version Number
- Search an element in sorted and rotated array
- Excel Sheet | Part - 2
- Missing And Repeating
- Maximum Gap
- Find Kth Rotation
- Sorted and Rotated Minimum
- Min sum formed by digits
- Remove Consecutive Characters
- Distinct Substrings
- Two Sum - Pair with Given Sum
- Number of occurrence
- Convert an array to reduced form
- Check if array is sorted
- Palindrome String
- Number of 1 Bits
- Nth Fibonacci Number
- Palindrome
- Linear Diophantine Equations
- Discovering Atlantis
- Number that are not divisible
- Squares in N*N Chessboard
- BBT counter
- Maximum Height Tree
- Overlapping rectangles
- Count all possible paths from top left to bottom right
- Construction of a string
- Maximising score
- Max Sum without Adjacents
- Fair string
- Number of Subarrays of 0's
- Dominant Pairs
- Print Linked List
- Find Length of Linked List
- Replace all 0's with 5
- Preorder Traversal
- First Occurence
- Sum Except First and Last
- Linked List Insertion At End
- Minimum element in BST
- Anagram of String
- Identical Linked Lists
- Insert in Middle of Linked List
- Absolute Value
- Bit Difference
- Sorted Array Search
- Binary String
- Reverse a String
- Binary Array Sorting
- Sum of Array
- Check for subsequence
- Min and Max in Array
- LCM And GCD
- Factorial
- Binary number to decimal number
- Common Divisors
- The dice problem
- Ways To Tile A Floor
- Print 1 to n without using loops
- Find X and Y in Linear Equation
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