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1755
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254 submissions in current year
SCHOOL (2)
BASIC (77)
EASY (381)
MEDIUM (616)
HARD (138)
- Sorting Elements of an Array by Frequency
- 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
- 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
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Heap Sort
- Merge two sorted linked lists
- Diagonal Tree Traversal
- Stack using Queue
- Directed Graph Cycle
- Undirected Graph Cycle
- Absolute List Sorting
- Two Stacks in an Array
- Binary Heap Operations
- 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
- Generate IP Addresses
- Kth element in Matrix
- Is Binary Tree Heap
- Remove loop in Linked List
- Dijkstra Algorithm
- Largest BST
- Interleaved Strings
- Sum of subset differences
- Count Palindromic Subsequences
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze
- Bipartite Graph
- Closest in BST
- BST with Dead End
- Pots of Gold Game
- Merge two BST 's
- Count distinct elements in every window
- 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
- Find Common Nodes in two BSTs
- Level order traversal
- Polynomial Addition
- Delete nodes greater than k
- Merge Sort for Linked List
- Union of Two Linked Lists
- Euler circuit and Path
- Binary Tree to CDLL
- Root to Leaf Paths
- Complete Binary Tree
- XOR Linked List
- Counting elements in two arrays
- K Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Arrange Consonants and Vowels
- Vertical sum
- Insert in Sorted way in a Sorted DLL
- Isomorphic Trees
- Maximum path sum
- Predecessor and Successor
- Find length of Loop
- Deletion and Reverse in Circular Linked List
- Median of BST
- Normal BST to Balanced BST
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- ZigZag Tree Traversal
- Doge
- Swap Kth nodes from ends
- Maximum Non-Adjacent Nodes Sum
- Mother Vertex
- Ceil in BST
- Tower Of Hanoi
- Smallest Positive Missing
- Power Of Numbers
- Possible Words From Phone Digits
- Rotate and delete
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Stock buy and sell
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Union of 2 Sorted with Duplicates
- Indexes of Subarray Sum
- Count the number of possible triangles
- Sort by Absolute Difference
- 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
- 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
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Minimum Cost of ropes
- Nearly sorted
- Fractional Knapsack
- Minimum Platforms
- Largest number in K swaps
- Black and White
- M-Coloring Problem
- Minimum Jumps
- Detect Cycle using DSU
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Sort according to an Array
- Allocate Minimum Pages
- Preorder to BST
- X Total Shapes
- Zero Sum Subarrays
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Nth Catalan Number
- Rotten Oranges
- Count subsequences of type a^i, b^j, c^k
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Top K Frequent in Array
- Stock Buy and Sell – Multiple Transaction Allowed
- Generate Parentheses
- Word Search
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Complement
- Maximum Sub Array
- Pascal Triangle
- Maximum Index
- Number of subarrays with maximum values in given range
- Flip Bits
- Sum of Subarrays
- Longest Span in two Binary Arrays
- 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
- Pair Sum Closest to 0
- Search in Rotated Sorted Array
- Smallest factorial number
- Count Full Binary Trees
- Maximize The Array
- Max Score from Subarray Mins
- Form the Largest Number
- Alternate Vowel and Consonant String
- Add Binary Strings
- Super Primes
- Maximum Product Subarray
- 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
- Longest Subarray with Sum K
- Count the Reversals
- Number of positive integral solutions
- Cutting Binary String
- Sum of two large numbers
- Max Sum without Adjacents
- Factorials of large numbers
- Shuffle integers
- 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
- Look and Say Pattern
- K-th element of two Arrays
- Arranging the array
- String formation from substring
- Rod Cutting
- K closest elements
- Missing element of AP
- 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
- Longest Common Increasing Subsequence
- First negative in every window of size k
- Equalize the Towers
- Minimum sum
- Not a subset sum
- Build the smallest
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Reaching the heights
- Smaller on Left
- Minimum Deletions
- A difference of values and indexes
- Maximum Product of Increasing Subsequence of Size 3
- Nine Divisors
- Find patterns
- Shop in Candy Store
- Permutations of a String
- Number following a pattern
- Previous number in one swap
- Friends Pairing Problem
- CamelCase Pattern Matching
- Lexicographically smallest string
- Subarrays Product Less than K
- Unique Number II
- Bleak Numbers
- Game of XOR
- Largest prime factor
- 3 Divisors
- Modified Game of Nim
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Santa Banta
- Ways To Tile A Floor
- Mobile numeric keypad
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Dice throw
- Perfect Sum Problem
- Trail of ones
- Power Of 2 and Subsequences
- Firing employees
- Shreyansh and his bits
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Knapsack with Duplicate Items
- nCr
- Number of ways
- Subsets with XOR value
- Partition Equal Subset Sum
- Longest Bitonic subsequence
- Min Coin
- Get Minimum Squares
- Count possible ways to construct buildings
- Count digit groupings of a number
- 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
- Number of paths in a matrix with k coins
- Choose and Swap
- LCM Triplet
- Sum of Query II
- Fact Digit Sum
- Jumping Numbers
- A Game of LCM
- Party in Town
- Game with String
- Count even length
- Fraction to Repeating Decimal
- Grouping Of Numbers
- Find the Safe Position
- Smith Number
- Next Permutation
- Missing number in matrix
- Smaller on Left
- Geek and knots
- Filling Bucket
- How Many X's?
- Power of k in factorial of n
- Matrix Exponentiation
- Longest Repeating Subsequence
- Composite and Prime
- Finding Profession
- Decode the string
- Preorder Traversal and BST
- Total Decoding Messages
- Stream First Non-repeating
- Maximum Sub-String after at most K changes
- 2D Hopscotch
- Villain Con
- Segregate even and odd nodes in a Linked List
- Print leaf nodes from preorder traversal of BST
- Tricky Subset Problem
- Longest Perfect Piece
- Rat Maze With Multiple Jumps
- 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 numbers with odd occurrences
- Find all distinct subset (or subsequence) sums
- Queries on Strings
- Queries on a Matrix
- Express as sum of power of natural numbers
- Find the string in grid
- Shortest Uncommon Subsequence
- Nodes at even distance
- Help a Thief!!!
- Count the paths
- Floyd Warshall
- Negative weight cycle
- Flood fill Algorithm
- Form coils in a matrix
- Shortest Source to Destination Path
- Base Equivalence
- Maximum sum Rectangle
- Shortest Path between Cities
- Moving on grid
- Reverse Spiral Form of Matrix
- Police and Thieves
- Geek and Number String
- Save Your Life
- Hamiltonian Path
- Recursively Remove Adjacent Duplicates
- Theft at World Bank
- Spiral Matrix
- Dam of Candies
- Jump Game
- Subset Sum Problem
- Form a palindrome
- Search Pattern (Rabin-Karp Algorithm)
- Find all possible palindromic partitions of a String
- 3 Sum Closest
- Bellman-Ford
- Subarrays with sum K
- Remove BST keys outside given range
- Partition a Linked List around a given value
- Coin Piles
- Substrings of length k with k-1 distinct elements
- Maximum XOR of two numbers in an array
- Count pairs in array divisible by K
- Number of Provinces
- Prefix match with other strings
- Binary Matrix with at most K 1s
- Maximum sum leaf to root path
- Maximum GCD of siblings of a binary tree
- Single valued subtree
- BST to max heap
- Maximum sum of elements not part of LIS
- BST to greater sum tree
- Find rectangle with corners as 1
- Minimize the Heights I
- Flatten binary tree to linked list
- Anti Diagonal Traversal of Matrix
- Add Minimum Characters
- IPL 2021 - Match Day 2
- Unique Number III
- All Unique Permutations of an array
- Find the first node of loop in linked list
- Length of the longest subarray with positive product
- Course Schedule II
- Clone an Undirected Graph
- Maximum Value
- Find a pair with given target in BST
- Min Cost Climbing Stairs
- Minimum times A has to be repeated such that B is a substring of it
- Can Make Triangle
- Distinct Elements
- Overlapping Intervals
- Remove and Reverse
- Total Decoding Messages
- Longest Possible Route in a Matrix with Hurdles
- Find k-th smallest element in given n ranges
- Even Swap
- Reverse a Stack
- Farthest number
- K-th Largest Sum Contiguous Subarray
- Maximum Meetings in One Room
- Enemy
- Max Equal sum of 3 Stacks
- Buy Maximum Stocks
- Exactly one swap
- Levels Of Game
- Smallest sum contiguous subarray
- Array Removals
- Minimum Cost to cut a board into squares
- Stack Permutations
- Largest subtree sum in a tree
- Wine Buying and Selling
- Replace every element with the least greater element on its right
- Maximum selections
- LCP
- Next element with greater frequency
- Sum of nodes within k distance from target
- Minimum increment/decrement to make array non-Increasing
- Sort a k sorted doubly linked list
- Minimum Swaps
- Construct Binary Tree from String with bracket representation
- 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
- Safe States
- Alex Travelling
- Number Of Islands
- Merging Details
- Number of Ways to Arrive at Destination
- Path With Minimum Effort
- Shortest path in Directed Acyclic Graph
- Majority Element II
- Sum of Beauty of All Substrings
- Koko Eating Bananas
- Longest subarray with Atmost two distinct integers
- Sum of subarray minimum
- Frog Jump
- Asteroid Collision
- Stock Buy and Sell with Cooldown
- Aggressive Cows
- Smallest Divisor
- Minimum days to make M bouquets
- Generate all binary strings
- Task Scheduler
- Hands of Straights
- Lemonade Change
- Maximum Sum Combination
- Non-overlapping Intervals
- Insert Interval
- Longest String Chain
- Floor in BST
- Largest Divisible Subset
- 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
- 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
- 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
- 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
- Powerful Integer
- 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
- Minimum Waiting Time
- Happy Subarrays
- GFG's new Game
- Count beautiful strings
- Modify Linked List-1
- Find Kth permutation
- Remove the balls
- Fraction pairs with sum 1
- Minimize Top Speed
- New Year Resolution
- Kth Missing Positive Number in a Sorted Array
- Count Subarrays with given XOR
- Longest Non-Decreasing Subarray - I
- Longest Common Palindromic Substring
- Set Matrix Zeros
- Minimum cost to connect all houses in a city
- Find All Triplets with Zero Sum
- Split array in three equal sum subarrays
- Last Moment Before All Ants Fall Out
- 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
- Balancing Consonants and Vowels Ratio
- Subarrays With At Most K Distinct Integers
- K Closest Points to Origin
- Longest Bounded-Difference Subarray
- The Knight's tour problem
- Divisible by 13
- Lexicographically Largest String After K Deletions
- Group Balls by Sequence
- Count Unique Vowel Strings
- Count Numbers Containing Specific Digits
- ASCII Range Sum
- 2D Difference Array
- Difference Check
- Farthest Smaller Right
- Maximize median after doing k addition operation
- Maximize the minimum difference between k elements
- Search in fully rotated sorted 2D matrix
- Minimum Steps to Halve Sum
- Min Add to Make Parentheses Valid
- String stack
- Longest Subarray Length
- Design MinMax Queue
- Unique K-Number Sum
- Sum of Nodes in BST Range
- Construct Tree from Preorder & Postorder
- K closest Values
- Split Array Subsequences
- Find K Smallest Sum Pairs
- Max DAG Edges
- Graph Diameter
- Weighted Job Scheduling
- Make Strings Equal
- Second Best Minimum Spanning Tree
- 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
- AVL Tree Insertion
- Partition array to k subsets
- Maximum subset XOR
- 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
- Minimum Cost Path
- Word Ladder I
- Median of 2 Sorted Arrays of Different Sizes
- Burning Tree
- Next Smallest Palindrome
- Count Pairs in an Array
- The Painter's Partition Problem-II
- 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
- Print all LCS sequences
- Sub-arrays with equal number of occurences
- Edit Distance
- Doctor Strange
- Minimum sum partition
- Number Formation
- Palindromic Partitioning
- Next Happy Number
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Strictly Increasing Array
- Bit Difference
- Median in a row-wise sorted Matrix
- Kill Captain America
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Bike Racing
- Word Break - 2
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Phone directory
- Adventure in a Maze
- Closest Palindrome
- Articulation Point - II
- Assignment Problem
- Longest Path in a matrix
- Word Wrap
- Huffman Encoding
- Find the Maximum Flow
- Smallest Positive Integer that can not be represented as Sum
- Maximum XOR subarray
- Longest substring to form a Palindrome
- Minimum X (xor) A
- Sorted Linked List to BST
- Palindrome Pairs
- Array Partition
- Count occurrences of a given word in a 2-d array
- Reverse a sublist of a linked list
- Distribute Candies
- 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
- Palindrome Pairs
- 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
- Minimum time to fulfil all orders
- Geek in a Maze
- Expression Add Operators
- MaxSkill
- Minimum Cost to Merge Stones
- Minimize Max Distance to Gas Station
- Count Reverse Pairs
- 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
- 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
- Cut The Edge
- Making A Large Island
- Meeting Rooms III
- Minimum K Consecutive Bit Flips
- Minimum Weight Cycle
- Count the Coprimes
- Longest Periodic Proper Prefix
- Maximum Non-Overlapping Odd Palindrome Sum
- Maximum subarray sum 2
- Sum of Mode
- Number of BST From Array
- Shortest Cycle
- Chocolate Pickup II
- Minimum Cost to Cut a Stick of length N
- Geek and his Marks
- Class Test
- Reverse a linked list
- Frequency in a Linked List
- Pairwise swap elements 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
- 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
- Left View of Binary Tree
- Intersection Sorted Linked Lists
- Find Transition Point
- Remove Duplicates from a Sorted Linked List
- Postorder Traversal
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Stack using Linked List
- Insert a node in a BST
- BFS of graph
- Identical Trees
- 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
- Remove duplicates in array
- Binary Tree to BST
- Unique rows in boolean matrix
- Remove every k'th node
- Third largest element
- Multiply two linked lists
- Josephus problem
- 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
- Index of an Extra Element
- Operating an array
- Insert in a Sorted List
- Split Linked List Alternatingly
- More than n/k Occurrences
- Symmetric Tree
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List
- Next Right Node
- Find length of Loop
- Leaf under budget
- Linked List Matrix
- Maximum Pairwise Computed Value
- Queue Reversal
- Closest Neighbour in BST
- Brothers From Different Roots
- Move all zeros to the front of the linked list
- Delete Mid of a Stack
- Product of an Array
- While loop- printTable - Java
- Count the Specials
- Predict the Column
- Count Odd Even - Java
- Find the Frequency
- Reverse an Array
- Frequency in Queue
- Get min at pop
- Frequency Game
- If conditional statement- Python
- Check the status - Python
- Mark Even and Odd - Python
- For loop - Python
- For Loop 2- Python
- While loop in Python
- Jumping through While - Python
- Mean Finder
- Neighbour of 10
- Dictionary in Python - II
- First Set Bit
- Rightmost different bit
- K-th Bit is Set or Not
- Longest Consecutive 1's
- Modular Inverse
- Power of 2
- Swap odd and even bits
- Wave Array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Floor in a Sorted Array
- 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
- Minimum indexed character
- Non Repeating Character
- Parenthesis Checker
- Generate Binary Numbers
- Minimum Cost of ropes
- N meetings in one room
- Union-Find
- Count number of hops
- Pattern searching
- Rotate Deque By K
- 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
- Missing And Repeating
- Non-Repeating Element
- Find Kth Rotation
- Adding Ones
- 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
- Min sum formed by digits
- Minimize the sum of product
- Missing number
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- 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
- Common Subsequence
- Convert a sentence into its equivalent mobile numeric keypad sequence
- Kth distance
- Palindrome Sentence
- Remove Duplicates
- Nearest multiple of 10
- Reorganize The Array
- Facing the sun
- Second Largest
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Rotate Bits
- Find all pairs with a given sum
- Number of occurrence
- Reversing the equation
- 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
- First Repeated Character
- Counts Zeros Xor Pairs
- Substrings with same first and last characters
- Two sum -Pairs with 0 Sum
- Segregate 0s and 1s
- Hungry Pizza Lovers
- Tywin's War Strategy
- At Least K Occurrences
- Find the closest pair from two arrays
- Count the Zeros
- Palindrome String
- Maximum average subarray
- Total count
- Smallest greater elements in whole array
- Fitting The Array
- Pair with given sum in a sorted array
- Balanced string
- Shop in Candy Store
- Largest number in one swap
- Partition a number into two divisible parts
- Is Binary Number Multiple of 3
- Minimum Operations
- Adding Array Elements
- Number of 1 Bits
- Armstrong Numbers
- Pairs with Positive Negative values
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Change Bits
- Ceil The Floor
- Count digits in a factorial
- Copy Set Bits in Range
- Count Digits
- Palindrome
- Party of Couples
- Shortest path from 1 to n
- Sum 1 to n Divisors
- Compute (a*b)%c
- Assign Mice Holes
- The Bit Game
- Swap bits
- Reach the Nth point
- Minimum number of Coins
- Number Of Open Doors
- Break a number
- Perfect Numbers
- Nth item through sum
- Maximum height of the staircase
- Smallest number with sum of digits as N and divisible by 10^N
- Factorials Less than or Equal to n
- Maximize Toys
- Largest number possible
- Good Numbers
- Trailing zeroes in factorial
- Form a number divisible by 3 using array digits
- Series GP
- Least Prime Factor
- Sum of First N Natural Numbers
- Find nth root of m
- Prime Factors
- Tom and Jerry
- Summed Matrix
- Maximum Diamonds
- Arithmetic Number
- Make Zeroes
- Surround the 1's
- Farthest number
- Help Ishaan
- Trace Path
- Inorder Traversal and BST
- Sequence Fun
- Letters Collection
- Help the Old Man!!!
- Inverted triangle of stars
- 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
- Count the paths
- Sum of dependencies in a graph
- Count all possible paths from top left to bottom right
- Ball coloring
- Modified Numbers and Queries
- Fraction Trouble
- PF - Decimal to Binary
- PF - Count Occurrence of a Substring
- PF - Negative Indexing
- Sum of k smallest elements in BST
- PF - Remove Duplicates
- PF - Round
- PF - Factorial
- PF - Mean
- CPH - Count Set Bit
- Print Diagonally
- CPH - Count Digits
- CPH - Count Distinct Elements
- CPH - Find GCD
- Plus One
- Sum of two numbers without using arithmetic operators
- Even and Odd
- Search insert position of K in a sorted array
- Check if a String is Subsequence of Other
- Maximum number of 2X2 squares
- First and last occurrences of x
- Construction of a string
- Minimum cost of ropes
- Transform to Sum Tree
- License Key Formatting
- Wave Array
- Count the Substrings
- Max Sum without Adjacents
- Count the Subarrays
- Count pairs with given sum
- Find all possible paths from top to bottom
- Smallest Subset with Greater Sum
- Minimum Sum of Absolute Differences of Pairs
- Move Last Element to Front of a Linked List
- Matrix Operations
- Find pairs with given sum in doubly linked list
- Triangle and Square
- Same characters
- Even subarray sum
- Police Station
- Farthest number
- Make sum even
- Largest odd number in string
- Maximum Nesting Depth of the Parentheses
- Stock Buy and Sell – Max one Transaction Allowed
- Maximum Depth Of Binary Tree
- Search in Linked List
- Geek left with No Food
- Array to Linked List
- Introduction to Doubly Linked List
- 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
- 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
- Maximum Identical Bowls
- Bus Conductor
- Wifi Range
- Minimum Number
- Minimum Integer
- Seating Arrangement
- String Mirror
- Powerfull Integer
- Make Palindrome
- Geekina loves order
- Binary Modulo
- Total Cuts
- Bit Magic
- Array Operations
- Dominant Pairs
- Total Traversal Time
- Special Array
- How Many Meets
- Binary Array
- Geekina and Log
- Strong Students in School
- Density of a Tree
- Ticket Counter
- Happy Friends
- Weight Problem
- Magic and toy shop
- Unique Number of Occurrences
- Separate Stone
- Unique Positions
- What Mean do you Mean?
- Two Smallests in Every Subarray
- Largest Pair Sum
- Distribute Balls
- Two Swaps
- 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
- Search in a row-wise sorted matrix
- Find Only Repetitive Element from 1 to n-1
- Unique Number I
- Maximum Value
- Sort String
- Count Linked List Nodes
- Size of Binary Tree
- Implement stack using array
- Doubly linked list Insertion at given position
- Replace all 0's with 5
- Sum Except First and Last
- Palindromic Array
- Peak element
- Linked List Insertion At End
- Is Linked List Length Even?
- Triplet Family
- Count Odd and Even
- Zero Converter - Python
- Welcome aboard - Python
- Regex - Python
- Two digit Sum
- AweSum
- Bit Difference
- Print 1 To N Without Loop
- Reverse array in groups
- Array Search
- Sorted Array Search
- Binary Array Sorting
- Check if a string is Isogram or not
- Binary String
- Reverse a String
- Keypad typing
- First n Fibonacci
- C++ Hello World
- Sum of Array
- Searching in an Array
- Print Elements of Array
- At least two greater elements
- Sort The Array
- Alternative Sorting
- Value equal to index value
- Fighting the darkness
- Immediate Smaller Element
- Uncommon characters
- Quick Left Rotation
- Repeated Character
- Elements in the Range
- Last index of One
- Largest Element in Array
- Rotate Array by One
- Game with nos
- Exceptionally odd
- Ishaan Loves Chocolates
- Array Subset
- Rotating an Array
- Min and Max in Array
- Addition of Two Numbers
- Decision Making in Java
- Java Hello World
- LCM And GCD
- Small Factorial
- Leap Year
- Strong Numbers
- Median of an Array
- Sum Of Digits
- Factorial
- Prime Number
- Sum of first n terms
- The dice problem
- Print 1 to n without using loops
- Count Squares
- Middle of Three
- Mind Game
- Swap two numbers
- Unique Numbers
- Minimum difference pair
- Finding Position
- Java Switch Case statement
- PF - Swap The Numbers
- Max Min
- Naughty Geek