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181 submissions in current year
SCHOOL (1)
BASIC (74)
EASY (264)
MEDIUM (216)
HARD (40)
- Nearly Sorted Algorithm
- SP - Meld Game
- Increment and Move
- K<sup>th</sup> Maximum element of Max-Heap
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Detect Loop in linked list
- Count BST nodes that lie in a given range
- Merge Sort
- Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Add all greater values to every node in a BST
- Sum Tree
- Flattening a Linked List
- Tree Boundary Traversal
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Absolute List Sorting
- Two Stacks in an Array
- The Celebrity Problem
- Topological sort
- Merge K sorted linked lists
- Find the number of islands
- Find kth element of spiral matrix
- Get Min from Stack
- Gas Station
- Kth element in Matrix
- Validate an IP Address
- Remove loop in Linked List
- Largest BST
- Multiply two strings
- Implement Atoi
- Palindrome Linked List
- Bipartite Graph
- Delete keys in a Linked list
- Merge two BST 's
- Merge k Sorted Arrays
- Find triplets with zero sum
- Sort a stack
- Top View of Binary Tree
- k-th Smallest in BST
- Ancestors in Binary Tree
- Pair Sum in BST
- Construct Tree from Inorder & Preorder
- Maximum path sum from any node
- Check if two Nodes are Cousins
- ZigZag Tree Traversal
- Sum Pair
- Diagonal Sum
- Pattern Printer - CPP
- Cat and Hat
- Nearest Power
- Doge
- Unlucky Number
- Frequency of Speaking
- Count set bits
- Smallest Positive Missing
- Power Of Numbers
- Possible Words From Phone Digits
- Stock buy and sell
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Two Repeated Elements
- Unique BST's
- Indexes of Subarray Sum
- Triplet Sum in Array
- Merge Without Extra Space
- Spirally traversing a matrix
- Unit Area of largest region of 1's
- Longest Consecutive Subsequence
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Kth smallest element
- Fractional Knapsack
- Minimum Platforms
- Combination Sum
- Minimum Jumps
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Optimal Strategy For A Game
- Minimum number of jumps
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Equal Sum Partition
- Allocate Minimum Pages
- Zero Sum Subarrays
- Find whether path exist
- Kth Smallest
- Implement Trie
- Nth Catalan Number
- Rotten Oranges
- Steps by Knight
- Most frequent word in an array of strings
- 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
- Generate Parentheses
- Word Search
- Prerequisite Tasks
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Sort 0s, 1s and 2s
- Pascal Triangle
- Maximum Index
- Maximize Number of 1's
- Sum of Middle elements of two sorted arrays
- Single Among Doubles in a Sorted
- Pythagorean Triplet
- Pair Sum Closest to 0
- Search in Rotated Sorted Array
- Form the Largest Number
- Water Collection
- Maximum Product Subarray
- Column name from a given column number
- Substrings with K Distinct
- Form a palindrome
- Smallest subarray with all occurrences of a most frequent element
- Nuts and Bolts Problem
- Rotate a Matrix
- Max Sum without Adjacents
- Reverse each word in a given string
- Length of the longest substring
- k largest elements
- Magnet Array Problem
- Longest Common Substring
- Longest substring with distinct characters
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Integer to Words
- Longest Arithmetic Subsequence
- Rod Cutting
- K closest elements
- Longest Palindromic Subsequence
- Roll the characters of a String
- First and Last Occurrences
- Permutations of a String
- Subarrays Product Less than K
- Bleak Numbers
- Max possible amount
- Modular Exponentiation
- Coin Change (Count Ways)
- Sieve of Eratosthenes
- Perfect Sum Problem
- Count ways to N'th Stair(Order does not matter)
- Knapsack with Duplicate Items
- Number of ways
- Probability of Knight
- Number of paths
- Return two prime numbers
- Find the Safe Position
- Next Permutation
- Smaller on Left
- Longest Repeating Subsequence
- Decode the string
- Is Sudoku Valid
- Preorder Traversal and BST
- Total Decoding Messages
- Stream First Non-repeating
- Segregate even and odd nodes in a Linked List
- Kth Largest in a Stream
- Snake and Ladder Problem
- Satisfy the equation
- Replace O's with X's
- Check Mirror in N-ary tree
- Special Matrix
- Queries on a Matrix
- Count the paths
- Save Your Life
- Spiral Matrix
- Subset Sum Problem
- Form a palindrome
- Gray Code
- Capacity To Ship Packages Within D Days
- Remove K Digits
- Number of Provinces
- Find duplicate rows in a binary matrix
- Shortest Prime Path
- Remove all occurences of duplicates in a linked list
- Design Browser History
- IPL 2021 - Match Day 2
- Robots
- Course Schedule
- Clone an Undirected Graph
- Overlapping Intervals
- Stack Permutations
- Number Of Enclaves
- City With the Smallest Number of Neighbors at a Threshold Distance
- Shortest path in Directed Acyclic Graph
- Koko Eating Bananas
- Frog Jump
- Asteroid Collision
- Grid Path 2
- Stock Buy and Sell – with Cooldown
- Combination Sum II
- Minimum Absolute Difference In BST
- Non-overlapping Intervals
- Index of the First Occurrence of pattern in a text
- Paint N House
- Intersection Point in Y Shaped Linked Lists
- Unique Paths in a Grid
- Design Add and Search Words Data Structure
- Find H-Index
- K Closest Points to Origin
- Get Max from Stack
- Rotate Array
- Game of Function
- Pairing the brackets
- Queue using Linked List
- Search a node in BST
- Peak element
- Minimum element in BST
- Anagram of String
- Start Coding
- The Size of
- Logical Operators
- Count Odd and Even
- Filter the weeds
- Volume of Cuboid
- Vector Common Elements
- Sort and Reverse Vector
- Front to Back
- Stack and Queue Operations
- Stack designer
- Banish the Commons
- Queue Push & Pop
- Set Operations
- Map Operations
- Start Coding - Python
- Space Seperated - Python
- Concatenating Strings - Python
- Taking input and typecasting - Python
- Taking input - Python
- Comparison Operators - Python
- Zero Converter - Python
- Welcome aboard - Python
- Regex - Python
- Iterating through Lists - Python
- Functions - Python
- Variable Arguments - Python
- Anonymous Functions - Python
- Two digit Sum
- AweSum
- Copy the End
- KaBoom
- Lambda Sum
- Four and Four
- Decimal to binary
- Bit Difference
- Reverse array in groups
- Binary String
- First n Fibonacci
- Anagram Palindrome
- Value equal to index value
- Check for subsequence
- Immediate Smaller Element
- Last index of One
- Exceptionally odd
- Rotating an Array
- First and Second Smallests
- Betting game
- GCD of two numbers
- Odd or Even
- Check set bits
- Binary representation
- Find position of set bit
- LCM And GCD
- House Robber
- Longest Increasing Subarray
- Factorial
- Binary number to decimal number
- Prime Number
- Absolute Difference of 1
- Angle between hour and minute hand
- Ways To Tile A Floor
- GCD, LCM and Distributive Property
- Swap two numbers
- Unique Numbers
- Finding Position
- SP - Beautiful Pairs
- Catch The Nun
- Golden String
- SP - Golden String
- SP - Catch The Nun
- Geek String
- Same Count After Sorting
- Odd Couples
- Check XOR
- Count Max Sum Pair
- Sort Matrix Rows
- Check the Brackets
- Jumping the Subtree
- Maximum Integer Value
- Food Fest
- Reverse a linked list
- Delete N nodes after M nodes of a linked list
- Pairwise swap elements of a linked list
- Remove duplicates from an unsorted linked list
- Reverse a Doubly Linked List
- Check for BST
- Right View of Binary Tree
- Mirror Tree
- Two Mirror Trees
- Delete without head pointer
- Height of Binary Tree
- Kth from End of Linked List
- Middle of a Linked List
- Check If Circular Linked List
- Left View of Binary Tree
- Intersection Sorted Linked Lists
- Queue using two Stacks
- Remove Duplicates from a Sorted Linked List
- Stack using two queues
- 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
- BST Keys in a Range
- Equilibrium index of an array
- Remove every k'th node
- Leaves at Same Level or Not
- Josephus problem
- Find perimeter of shapes
- Delete in a Singly Linked List
- Array Duplicates
- Special Stack
- Level order traversal
- Inorder Successor in BST
- Intersection of Two Linked Lists
- Symmetric Tree
- Find length of Loop
- Tilt of Binary Tree
- The New Line
- Controlled_Printing
- Coding with Operators
- Bridge of Stones
- Data Types
- Taking input
- Learn to Comment
- GetLine and Ignore
- Learning to be precise
- Bitwise Operators
- Even Odd
- For Loop- primeCheck
- While loop- printTable
- Learning Macros
- Step by Step Condition
- Start Coding - Java
- The New Line - Java
- Data Types - Java
- Taking input - Java
- Learn to Comment - Java
- nextLine and next
- Precise Format - Java
- logical Operators - Java
- Bitwise Operators - Java
- Even Odd - Java
- For Loop- primeCheck - Java
- While loop- printTable - Java
- Step by Step Condition - Java
- Exists or Not?
- The Loner
- Swap the array elements
- Count the Specials
- Matrix Interchange
- Predict the Column
- Xoring and Clearing
- Consonants and Vowels check
- Even Subsets
- Almost Equal
- The Pattern Matcher
- Swap values using References
- Swap the objects
- Structs and Objects
- Two Dimensional World
- Learning Structs
- Delete Array
- Cover the distance
- Maximum Integer Value - Java
- Sum of Big Integers
- BigInteger Multiply
- BigInteger mod
- Play With Vectors
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Student of the Year
- Java ArrayList Operation
- Stack Operations
- Frequency in Queue
- Operations on PriorityQueue
- Get min at pop
- Deque Implementations
- Min Heap implementation
- Strings Frequency
- Multiset Operations
- Multimap Operations
- Repetitive Printing - Python
- Operators in Python
- Split the input - Python
- Comment in Python
- Logical Operators - Python
- Increment and Decrement - Python
- Bitwise Operators - Python
- 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
- Slicing in String - Python
- Repeat the Strings - Python
- Regular Expressions 2 - Python
- String Functions - II - Python
- String Functions I - Python
- Intro to Lists - Python
- Count Even Odd - Python
- Functions in Lists - Python
- Classes and Objects - Python
- Average_Min_Max - Python
- Sorting in Lists - Python
- Mean Finder
- Intro to Dictionary - Python
- Neighbour of 10
- Dictionary in Python - II
- Dictionary in Python - III
- Set in Python - I
- Deep Copy objects
- Set in Python - II
- List Average
- Unique number
- Is and In Operator
- sep and end in Print()
- Modules
- First Set Bit
- Power of 2
- Swap odd and even bits
- Wave Array
- Equilibrium Point
- Array Leaders
- Floor in a Sorted Array
- Rotate by 90 degree
- Anagram
- Winner of an election
- Reverse Words
- Non Repeating Character
- Parenthesis Checker
- Generate Binary Numbers
- Minimum Cost of ropes
- N meetings in one room
- Count number of hops
- Numbers containing 1, 2 and 3
- Missing in Array
- Product array puzzle
- Search an element in sorted and rotated array
- Missing And Repeating
- Non-Repeating Element
- Pairs of equals Sum
- Max value
- Maximum no of 1's row
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- String Duplicates Removal
- Minimize the sum of product
- Chocolate Distribution Problem
- Find Pair Given Difference
- Pairs with difference k
- Finding Number
- Drive the car
- Bitonic Point
- Amend The Sentence
- Closest Strings
- Single Number
- Remaining String
- Common Subsequence
- Remove b and ac from a given string
- Sort in specific order
- Toppers Of Class
- Facing the sun
- Count Substrings
- Two Sum - Pair with Given Sum
- Check if array contains contiguous integers
- Sort Unsorted Subarray
- Find all pairs with a given sum
- Number of occurrence
- Longest common prefix
- Longest Common Prefix of Strings
- Special array reversal
- Even and odd elements at even and odd positions
- Min Manipulations to make Strings Anagram
- Min Number of Flips
- Two sum -Pairs with 0 Sum
- Maximum number of zeroes
- Print an array in Pendulum Arrangement
- Three Great Candidates
- Element with left side smaller and right side greater
- Maximum sum of subarray less than or equal to x
- Four Elements
- Maximum number of partitions that can be sorted individually to make sorted
- Print Bracket Number
- Easy string
- Is Binary Number Multiple of 3
- Number of 1 Bits
- Check if a Integer is power of 8 or not
- Pairs with Positive Negative values
- Reverse Bits
- Nth Fibonacci Number
- Copy Set Bits in Range
- Element that appears once where every element occurs twice
- Maximum Product Cutting
- Count numbers containing 4
- Reach the Nth point
- Numbers with same first and last digit
- Maximum height of the staircase
- Adjacents are not allowed
- Final Destination
- Print this pattern!
- Rectangles in N*N Board
- Squares in N*N Chessboard
- Trailing zeroes in factorial
- Is Square
- Overlapping rectangles
- Inverted triangle of stars
- Print Pattern
- Count all possible paths from top left to bottom right
- Plus One
- Search insert position of K in a sorted array
- Design HashMap
- Apple Sequences
- Stock Buy and Sell – Max one Transaction Allowed
- Minimize the sum
- Find the first node of loop in linked list
- Check if array contains duplicates
- 2 Sum – Count distinct pairs with given sum
- Meeting Rooms
- Find the ODDs
- Order of Frequency
- Lower Upper ASCII
- All Primes
- Linked List Group Reverse
- Reorder List
- Clone List with Next and Random
- Min distance between two given nodes of a Binary Tree
- Max rectangle
- LRU Cache
- Points in Straight Line
- Alien Dictionary
- Make them One
- String Permutations
- Trapping Rain Water
- 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
- Merge Without Extra Space
- Distinct palindromic substrings
- Count Smaller elements
- Edit Distance
- Stock Buy and Sell – Max K Transactions Allowed
- Bit Difference
- Longest valid Parentheses
- Word Break - 2
- N-Queen Problem
- Phone directory
- Huffman Encoding
- 132 Geeky Buildings
- Longest Increasing Path in a Matrix
- Find number of closed islands
- Account Merge
- Pacific Atlantic Water Flow
- Word Search II
- Median of 2 Sorted Arrays of Same Size
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