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6 submissions in current year
SCHOOL (1)
BASIC (68)
EASY (239)
MEDIUM (263)
HARD (32)
- Print Linked List
- Find Length of Linked List
- Check for Binary String
- Size of Binary Tree
- Count Leaves in Binary Tree
- Preorder Traversal
- First Occurence
- Search a node in BST
- Linked List Insertion At End
- Minimum element in BST
- Anagram of String
- Is Linked List Length Even?
- Identical Linked Lists
- Triplet Family
- Insert in Middle of Linked List
- Count Non-Leaf Nodes in Tree
- Count Odd and Even
- Bit Difference
- Number is sparse or not
- Print 1 To N Without Loop
- Array Search
- Sorted Array Search
- Reverse a String
- First n Fibonacci
- C++ Hello World
- Sum of Natural Numbers
- Searching in an Array
- Count pair sum
- Print Elements of Array
- Alternative Sorting
- Lower case to upper case
- Last index of One
- Largest Element in Array
- Rotate Array by One
- Ishaan Loves Chocolates
- Array Subset
- Rotating an Array
- C++ Strings
- Min and Max in Array
- Multiply left and right array sum
- Convert String to LowerCase
- GCD of two numbers
- Odd or Even
- Number of Diagonals
- Java Hello World
- LCM And GCD
- Find n-th term of series 1, 3, 6, 10, 15, 21
- Leap Year
- Check perfect square
- Product Sum
- Factorial
- Series AP
- Count Squares
- Middle of Three
- Swap two numbers
- nPr
- Squares in a Matrix
- Diagonal sum
- Sorted matrix
- Max Min
- Add numbers in array
- Pattern 1
- Pattern 5
- Pattern 10
- Naughty Geek
- Who has the majority?
- Disk Placement
- Difference Sum
- Reverse a linked list
- Pairwise swap elements of a linked list
- Linked list of strings forms a palindrome
- Remove duplicates from an unsorted linked list
- Split a Linked List into two halves
- Delete in a Doubly Linked List
- Inorder Traversal
- Reverse a Doubly Linked List
- Bubble Sort
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Maximum Width of 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
- Transform to Sum 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
- 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
- Remove Duplicates Sorted Array
- Level Order Line by Line
- Minimum Depth of a Binary Tree
- Binary Tree to BST
- Equilibrium index of an array
- Toeplitz matrix
- Leaves at Same Level or Not
- 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
- Insert in a Sorted List
- Split Linked List Alternatingly
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Max and min element in Binary Tree
- Reverse Using Stack
- Full Binary Tree
- Symmetric Tree
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List
- Count Pairs whose sum is equal to X
- Queue Reversal
- Reverse first K of a Queue
- Remove Half Nodes
- Sum of Leaf Nodes
- Closest Neighbour in BST
- Brothers From Different Roots
- Delete Mid of a Stack
- Product of an Array
- Taking input
- Learn to Comment
- While loop- printTable
- Learn to Comment - Java
- Swap the array elements
- Predict the Column
- Find the Frequency
- Reverse an Array
- Frequency Game
- First Set Bit
- Check K-th Bit
- Power of 2
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Floor in a Sorted Array
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Transpose of Matrix
- Matrix Boundary Traversal
- Anagram
- String Rotated by 2 Places
- Isomorphic Strings
- Most Frequent Character
- Non Repeating Character
- Parenthesis Checker
- 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
- Search an element in sorted and rotated array
- Intersection of Arrays with Distinct
- Missing And Repeating
- Non-Repeating Element
- Find Kth Rotation
- Common in 3 Sorted Arrays
- Sorted and Rotated Minimum
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- String Duplicates Removal
- Minimize the sum of product
- Move all negative elements to end
- Chocolate Distribution Problem
- Count the triplets
- Find Pair Given Difference
- Pairs with difference k
- Swap and Maximize
- Bitonic Point
- Sort Array II
- Single Number
- Alternate Positive Negative
- Kth distance
- 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
- K-Pangrams
- Does array represent Heap
- Modify the Array
- Convert an array to reduced form
- Check if array is sorted
- Find missing in second array
- String's Count
- Longest Common Prefix of Strings
- Two sum -Pairs with 0 Sum
- Segregate 0s and 1s
- Play With OR
- At Least K Occurrences
- Find the closest pair from two arrays
- Count the Zeros
- Palindrome String
- Fitting The Array
- Pair with given sum in a sorted array
- Shop in Candy Store
- Minimum Operations
- Divisibility by 8
- Number of 1 Bits
- Find the Highest number
- Check if a Integer is power of 8 or not
- Armstrong Numbers
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Count Digits
- Sum Of Digits
- Prime Number
- Maximum Sum Problem
- Party of Couples
- Shortest path from 1 to n
- Sum 1 to n Divisors
- Minimum number of Coins
- Break a number
- Perfect Numbers
- Maximize Toys
- Check if it is possible to survive on Island
- Squares in N*N Chessboard
- Form a number divisible by 3 using array digits
- Least Prime Factor
- Prime Factors
- Recursive sequence
- Maximum Diamonds
- Arithmetic Number
- Inorder Traversal and BST
- Letters Collection
- Print Pattern
- Chicks in a Zoo
- Array to BST
- Sum of dependencies in a graph
- Largest value in each level
- First and last occurrences of x
- Move Last Element to Front of a Linked List
- Insert an Element at the Bottom of a Stack
- Number of Triangles
- Pattern 2
- Pattern 3
- Print N to 1 without loop
- Print GFG n times
- Fibonacci series up to Nth term
- Stock Buy and Sell – Max one Transaction Allowed
- Search in Linked List
- Total Cuts
- Type it!
- Min operations
- Last cell in a Matrix
- Balloon Everywhere
- Reverse both parts
- Cutting Rectangles
- Make Array Elements Equal
- Equal Left and Right Subarray Sum
- Make the array beautiful
- Is it Fibonacci
- Max Level Sum in Binary Tree
- Binary matrix having maximum number of 1s
- Bus Conductor
- Wifi Range
- Minimum Number
- Seating Arrangement
- Array Operations
- Dominant Pairs
- Total Traversal Time
- Ticket Counter
- Geek's Plants
- Same characters
- Strong Students in School
- Antique Collections
- Minimum Distance
- Count Indices
- Two Smallests in Every Subarray
- Split an array into two equal Sum subarrays
- Distribute Balls
- Two Swaps
- Find Minimum Cost
- Union of Two Sorted Arrays with Distinct Elements
- Intersection of Two arrays with Duplicate Elements
- Search in a row-wise sorted matrix
- Max x
- 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
- Count BST nodes that lie in a given range
- Check for BST
- Quick Sort
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Heap Sort
- Merge two sorted linked lists
- Sum Tree
- Connect Nodes of Levels
- Flattening a Linked List
- Diagonal Tree Traversal
- Stack using Queue
- Tree Boundary Traversal
- Delete a node from BST
- LCA in Binary Tree
- Two Stacks in an Array
- The Celebrity Problem
- Topological sort
- Vertical Tree Traversal
- Find the number of islands
- Get Min from Stack
- Gas Station
- Wildcard Pattern Matching
- Kth smallest element in a Matrix
- Remove loop in Linked List
- Dijkstra Algorithm
- Interleaved Strings
- Multiply two strings
- Implement Atoi
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze
- Bipartite Graph
- Closest in BST
- BST with Dead End
- Merge two BST 's
- Count distinct elements in every window
- Trie | (Delete)
- 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
- Peak element
- Merge Sort for Linked List
- Euler circuit and Path
- Ancestors in Binary Tree
- Binary Tree to CDLL
- K Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Vertical sum
- Isomorphic Trees
- Maximum path sum
- Predecessor and Successor
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Find length of Loop
- Normal BST to Balanced BST
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- ZigZag Tree Traversal
- Maximum Non-Adjacent Nodes Sum
- Ceil in BST
- Gray to Binary Conversion
- Tower Of Hanoi
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Rotate and delete
- Rearrange an array with O(1) extra space
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Binary Array Sorting
- Two Repeated Elements
- Union of 2 Sorted Arrays
- Indexes of Subarray Sum
- Triplet Sum in Array
- Merge Without Extra Space
- Level of Nodes
- Boolean Matrix
- Spirally traversing a matrix
- Search in a sorted Matrix
- Rotate by 90 degree
- Determinant of a Matrix
- Subarray with 0 sum
- Subarray range with given sum
- Strings Rotations of Each Other
- Case-specific Sorting of Strings
- Postfix Evaluation
- Next Greater Element
- K Sized Subarray Maximum
- Minimum Cost of ropes
- Job Sequencing Problem
- Minimum Platforms
- Target Sum Combinations
- Detect Cycle using DSU
- Ways to write n as sum
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Preorder to BST
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Rotten Oranges
- Most frequent word in an array of strings
- Rotate by 90 degree
- Top K Frequent in Array
- Stock Buy and Sell – Multiple Transaction Allowed
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Pascal Triangle
- Number of subarrays with maximum values in given range
- Single Among Doubles in a Sorted
- Split the Array
- Pythagorean Triplet
- Painting the Fence
- Search in Rotated Sorted Array
- Smallest number with at least n trailing zeroes in factorial
- Form the Largest Number
- Water Collection
- Add Binary Strings
- Maximum Product Subarray
- Row with max 1s
- Check if frequencies can be equal
- Column name from a given column number
- Substrings with K Distinct
- Form a palindrome
- Next Smaller Element
- Max Sum without Adjacents
- Factorials of large numbers
- Shuffle integers
- Find the N-th character
- k largest elements
- Sum of XOR of all pairs
- Look and Say Pattern
- K-th element of two Arrays
- Arranging the array
- Longest Arithmetic Subsequence
- Rod Cutting
- Missing element of AP
- Longest Palindromic Subsequence
- First negative in every window of size k
- Transform to prime
- First and Last Occurrences
- Minimum Deletions
- Permutations of a String
- Number following a pattern
- Subarrays Product Less than K
- Bleak Numbers
- Game of XOR
- Largest prime factor
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Sieve of Eratosthenes
- Gold Mine Problem
- Find distinct elements
- Knapsack with Duplicate Items
- nCr
- Get Minimum Squares
- Subset Sums
- Number of paths
- Nth Natural Number
- Find the Safe Position
- Next Permutation
- Missing number in matrix
- Is Sudoku Valid
- Total Decoding Messages
- Stream First Non-repeating
- Segregate even and odd nodes in a Linked List
- Transitive closure of a Graph
- Traverse All Edges And Vertices
- Floyd Warshall
- Negative weight cycle
- Flood fill Algorithm
- Iterative Inorder
- Preorder traversal (Iterative)
- Iterative Postorder
- Subset Sum Problem
- All Palindromic Partitions
- Bellman-Ford
- Minimize the Heights I
- Clone an Undirected Graph
- Min Cost Climbing Stairs
- Overlapping Intervals
- Find Kth permutation
- Expression contains redundant bracket or not
- Sort a k sorted doubly linked list
- Number Of Enclaves
- Eventual Safe States
- Majority Element - More Than n/3
- Aggressive Cows
- Minimum Absolute Difference In BST
- Maximum Sum Combination
- Non-overlapping Intervals
- Replace elements by its rank in the array
- Convert Min Heap to Max Heap
- Count Number of Nodes in a Binary Tree
- Index of the First Occurrence of pattern in a text
- Floor in BST
- Absolute difference divisible by K
- Find the first node of loop in linked list
- Carpet into Box
- Geeks And The String
- 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
- Geeks Island
- Connect Nodes at Same Level
- Unique Paths in a Grid
- Valid Compressed String
- Number of Good Components
- Optimal Array
- Best Node
- Update Queries
- Good Stones
- Maximum Intersecting Lines
- Count Cyclic Paths
- Maximum Triplet product
- Second smallest number
- Special Palindrome Substrings
- Maximum Possible Value
- Anagrams in Linked List
- Geek hates too many 1s
- Maximum Length
- Remove the balls
- Unequal Arrays
- Job Sequencing Problem
- Bheem Wants Ladoos
- Prefix Suffix String
- Smaller Sum
- Nearest smaller tower
- Find Number
- Count Total Setbits
- Modify Linked List-1
- Find Kth permutation
- Last Fairy Standing
- Count pairs with given sum
- Find All Triplets with Zero Sum
- Find H-Index
- Linked List Group Reverse
- 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
- AVL Tree Insertion
- Nodes at given distance in binary tree
- Trapping Rain Water
- Max Circular Subarray Sum
- Median of 2 Sorted Arrays of Different Sizes
- Burning Tree
- Number of distinct subsequences
- Sum-string
- Edit Distance
- Palindromic Partitioning
- Longest valid Parentheses
- N-Queen Problem
- Huffman Encoding
- Find all Critical Connections in the Graph
- Scrambled String
- Find the String
- Better String
- Select Nodes
- Fixing Two swapped nodes of a BST
- Avoid Explosion
- Walls Coloring II
- Partition the Array
- Max min Height
- Maximum Number of coins
- Minimum BST Sum Subtree
- Special Digits
- Making A Large Island