H
harshraghav718
STREAK
24/1462
days
Longest streak/Global longest streak
Language Used
C++, C, Java
Coding Score
1792
Problem Solved
574
Contest Rating
__
697 points
Contributor
697 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
0 submissions in current year
SCHOOL (0)
BASIC (22)
EASY (203)
MEDIUM (324)
HARD (25)
- Pairwise swap elements of a linked list
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Split a Linked List into two halves
- Reverse a Doubly Linked List
- Check for BST
- Right View of Binary Tree
- Maximum Width of Tree
- Height of Binary Tree
- Balanced Tree Check
- Kth from End of Linked List
- Check If Circular Linked List
- Left View of Binary Tree
- 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
- Square Root
- Nodes without a Sibling
- Lowest Common Ancestor in a BST
- BST Keys in a Range
- Binary Tree to BST
- Leaves at Same Level or Not
- Multiply two linked lists
- Josephus problem
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Special Stack
- Three way partitioning
- Level order traversal
- Inorder Successor in BST
- Insert in a Sorted List
- Sum of leaf nodes in BST
- More than n/k Occurrences
- Max and min element in Binary Tree
- Reverse Using Stack
- Symmetric Tree
- Next Right Node
- Find length of Loop
- Median of BST
- Queue Reversal
- Reverse first K of a Queue
- Closest Neighbour in BST
- Brothers From Different Roots
- Tilt of Binary Tree
- Move all zeros to the front of the linked list
- Delete Mid of a Stack
- Rotate doubly Linked List
- Swap the array elements
- Predict the Column
- Frequency in Queue
- Get min at pop
- Frequency Game
- Check K-th Bit
- Power of 2
- Frequencies in a Limited Array
- Roof Top
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Matrix Boundary Traversal
- String Rotated by 2 Places
- Strings Rotations of Each Other
- Isomorphic Strings
- Reverse Words
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Minimum Cost of ropes
- Union of Arrays with Duplicates
- Product array puzzle
- Roman Number to Integer
- Missing And Repeating
- Find Kth Rotation
- Sort by Set Bit Count
- Adding Ones
- Common in 3 Sorted Arrays
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- String Duplicates Removal
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- Punish the Students
- Find Pair Given Difference
- Alternate Positive Negative
- Convert a sentence into its equivalent mobile numeric keypad sequence
- Rearrange a string
- Remove Duplicates
- Add two numbers represented by two arrays
- Facing the sun
- Second most repeated string in a sequence
- Number of occurrence
- Reversing the equation
- Does array represent Heap
- Convert an array to reduced form
- String's Count
- Min Number of Flips
- Counts Zeros Xor Pairs
- Hungry Pizza Lovers
- At Least K Occurrences
- Ishaan and Sticks
- Find the closest pair from two arrays
- Maximum sum of increasing order elements from n arrays
- Merge two binary Max heaps
- Palindrome String
- Maximum average subarray
- Search array with adjacent diff at most k
- Smallest greater elements in whole array
- Fitting The Array
- Number of 1 Bits
- Max Sum Subarray of size K
- Copy Set Bits in Range
- Shortest path from 1 to n
- The Bit Game
- Minimum number of Coins
- Number Of Open Doors
- Least Prime Factor
- Sum of First N Natural Numbers
- Tom and Jerry
- Maximum Diamonds
- Arithmetic Number
- Make Zeroes
- Sequence Fun
- Letters Collection
- Print Pattern
- Primes sum
- Print the pattern
- Chicks in a Zoo
- Maximum Sum LCM
- Earthquake and the Paint Shop
- Sum of dependencies in a graph
- Ball coloring
- Rearrange Geek and his Classmates
- Modified Numbers and Queries
- Sum of k smallest elements in BST
- Print Diagonally
- Largest value in each level
- Maximum number of 2X2 squares
- License Key Formatting
- Count the Substrings
- Smallest Subset with Greater Sum
- 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
- Can Make Triangle
- Matrix Operations
- Find pairs with given sum in doubly linked list
- Triangle and Square
- Same characters
- Sorted array
- Assign Tasks
- Fibonacci series up to Nth term
- Maximum Depth Of Binary Tree
- 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
- Type it!
- Min operations
- Last cell in a Matrix
- Balloon Everywhere
- 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
- Geekina loves order
- Maximize The Number
- Binary Modulo
- Bit Magic
- Array Operations
- Dominant Pairs
- Total Traversal Time
- Special Array
- Count the Substrings
- Wave Array
- Ticket Counter
- Find Bots on Geeklandster
- Sorting Elements of an Array by Frequency
- Reverse alternate nodes in Link 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
- Detect Loop in linked list
- Quick Sort
- Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- 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
- Flattening a Linked List
- Diagonal Tree Traversal
- 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
- Binary Heap Operations
- The Celebrity Problem
- Topological sort
- Vertical Tree Traversal
- Merge K sorted linked lists
- Find the number of islands
- Serialize and deserialize a binary tree
- Gas Station
- Linked List to Binary Tree
- Generate IP Addresses
- Check if subtree
- Kth smallest element in a Matrix
- Is Binary Tree Heap
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Largest BST
- Sorted subsequence of size 3
- Multiply two strings
- Minimum Swaps to Sort
- Palindrome Linked List
- Rat in a Maze Problem - I
- Bipartite Graph
- Closest in BST
- BST with Dead End
- Merge k Sorted Arrays
- Bridge edge in a graph
- Sort a stack
- Duplicate Subtree
- Top View of Binary Tree
- k-th Smallest in BST
- Find Common Nodes in two BSTs
- Peak element
- Delete nodes greater than k
- Merge Sort for Linked List
- Union of Two Linked Lists
- Euler circuit and Path
- Binary Tree to CDLL
- Pair Sum in BST
- Root to Leaf Paths
- Complete Binary Tree
- Populate Inorder Successor for all nodes
- Counting elements in two arrays
- Construct expression tree
- K Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Construct Tree from Inorder & Preorder
- 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
- Deletion and Reverse in Circular Linked List
- Normal BST to Balanced BST
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- ZigZag Tree Traversal
- Swap Kth nodes from ends
- Maximum sum of Non-adjacent nodes
- Mother Vertex
- Count set bits
- Smallest Positive Missing
- Wave Array
- Rearrange an array with O(1) extra space
- Maximum Index
- Kadane's Algorithm
- Majority Element
- Binary Array Sorting
- Count Inversions
- Union of 2 Sorted Arrays
- Count the number of possible triangles
- Triplet Sum in Array
- Merge Without Extra Space
- Level of Nodes
- Boolean Matrix
- Spirally traversing a matrix
- Determinant of a Matrix
- Distance of nearest cell having 1
- Subarray with 0 sum
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Activity Selection
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- Combination Sum
- Unique Subsets
- Minimum Jumps
- Detect Cycle using DSU
- Stickler Thief
- Allocate Minimum Pages
- Preorder to BST
- Zero Sum Subarrays
- Kth Smallest
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Top K Frequent in Array
- Stock Buy and Sell – Multiple Transaction Allowed
- Word Search
- Prerequisite Tasks
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Sort 0s, 1s and 2s
- Maximum Sub Array
- Pascal Triangle
- Flip Bits
- Equivalent Sub-Arrays
- Pythagorean Triplet
- Search in Rotated Sorted Array
- Marks of PCM
- Add Binary Strings
- Maximum Product Subarray
- Row with max 1s
- Column name from a given column number
- Substrings with K Distinct
- Longest Subarray with Sum K
- Transform String
- Count the Reversals
- Number of positive integral solutions
- Sum of two large numbers
- Factorials of large numbers
- Length of the longest substring
- Remove leading zeros from an IP address
- k largest elements
- Smallest distinct window
- Longest Substring with K Uniques
- Longest Palindrome in a String
- K-th element of two Arrays
- Arranging the array
- Triplets with Smaller Sum
- 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
- First negative in every window of size k
- Minimum sum
- First and Last Occurrences
- Smaller on Left
- Maximum Product of Increasing Subsequence of Size 3
- Nine Divisors
- Valid Substring
- Find patterns
- Minimum Swaps for Bracket Balancing
- Permutations of a String
- CamelCase Pattern Matching
- Lexicographically smallest string
- Unique Number II
- Santa Banta
- Power Of 2 and Subsequences
- Power Set
- Partition Equal Subset Sum
- Magic Triplets
- Matchsticks game
- Killing Spree
- Unique partitions
- N Digit numbers with digits in increasing order
- Akku and Binary Numbers
- LCM Triplet
- Return two prime numbers
- A Game of LCM
- Game with String
- Count even length
- Grouping Of Numbers
- Find the Safe Position
- Next Permutation
- Missing number in matrix
- Smaller on Left
- Exit Point in a Matrix
- Decode the string
- Stream First Non-repeating
- Maximum Sub-String after at most K changes
- Segregate even and odd nodes in a Linked List
- Print leaf nodes from preorder traversal of BST
- Geek and Strings
- The Smurfs
- Transitive closure of a Graph
- Replace O's with X's
- Two odd Occuring
- Queries on a Matrix
- Express as sum of power of natural numbers
- Floyd Warshall
- Flood fill Algorithm
- Shortest Source to Destination Path
- Base Equivalence
- Height Using Parent Array
- Reverse Spiral Form of Matrix
- Geek and Number String
- Save Your Life
- Transfiguration
- Iterative Postorder
- Search Pattern (Z-algorithm)
- Search Pattern (Rabin-Karp Algorithm)
- All Palindromic Partitions
- Bellman-Ford
- Rearrange characters
- Substrings of length k with k-1 distinct elements
- Count pairs in array divisible by K
- Prefix match with other strings
- Single valued subtree
- Find rectangle with corners as 1
- Cousins of a given node
- Division without using multiplication, division and mod operator
- Sort for Singly Linked List
- Subsets
- Flatten binary tree to linked list
- Anti Diagonal Traversal of Matrix
- IPL 2021 - Match Day 2
- Unique Number III
- Course Schedule
- Find k-th smallest element in given n ranges
- Even Swap
- Reverse a Stack
- Robots
- Maximum Meetings in One Room
- Enemy
- Max Equal sum of 3 Stacks
- Buy Maximum Stocks
- Exactly one swap
- Maximum Winning score
- Smallest sum contiguous subarray
- Minimum Cost to cut a board into squares
- Stack Permutations
- Largest subtree sum in a tree
- Replace every element with the least greater element on its right
- LCP
- Next element with greater frequency
- Minimum Swaps
- 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
- Eventual Safe States
- Number Of Islands
- Number of Ways to Arrive at Destination
- Shortest Path in Undirected Graph
- Shortest path in Directed Acyclic Graph
- Sum of Beauty of All Substrings
- Asteroid Collision
- Aggressive Cows
- Shortest Path in Weighted undirected graph
- Hands of Straights
- Lemonade Change
- Maximum Sum Combination
- Floor in BST
- GCD Array
- Maximum Value
- Flattening a Linked List
- Absolute difference divisible by K
- Make array elements unique
- Next Greater Element in Circular Array
- Minimum X (xor) A
- Find minimum number of Laptops required
- Geeks And The String
- Find the longest string
- Intersection Point in Y Shaped Linked Lists
- BST Downward Traversal
- Length of the longest subarray with positive product
- Count number of free cell
- Minimum Days
- Prime List
- Walls Coloring
- Apple Sequences
- Valid Compressed String
- Knight in Geekland
- Shy Geek
- Count Special Numbers
- Minimum Steps Required
- Maximum Triplet product
- Second smallest number
- Distinct Difference
- Anagrams in Linked List
- Yet another query problem
- Geek hates too many 1s
- Maximum Length
- Remove the balls
- Unequal Arrays
- Bheem Wants Ladoos
- Prefix Suffix String
- Smaller Sum
- Nearest smaller tower
- Geek's Village and Wells
- Powerful Integer
- Max Coins
- Good Subtrees
- Subtree In N-ary Tree
- Palindrome with minimum sum
- Count Total Setbits
- Tree Transformation
- Construct a Full Binary Tree
- Modify Linked List-1
- Find Kth permutation
- Flatten BST to sorted list
- Rotate Array
- Search a node in BST
- Palindromic Array
- Minimum element in BST
- Anagram of String
- Bit Difference
- Reverse a String
- Find second largest element
- Immediate Smaller Element
- Elements in the Range
- Rotate Array by One
- Game with nos
- One odd Occuring
- Array Subset
- Min and Max in Array
- Find position of set bit
- Median of an Array
- Binary number to decimal number
- Count Squares
- Max Min
- Naughty Geek
- Who has the majority?
- Linked List Group Reverse
- Binary Tree to DLL
- Partition array to k subsets
- Alien Dictionary
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Trapping Rain Water
- Histogram Max Rectangular Area
- Burning Tree
- Merge Without Extra Space
- The Painter's Partition Problem-II
- Search Pattern (KMP-Algorithm)
- Count Smaller elements
- Median in a row-wise sorted Matrix
- Possible Paths in a Tree
- Word Break - 2
- Reverse a sublist of a linked list
- Min Chars to Add for Palindrome
- Largest rectangular sub-matrix whose sum is 0
- Minimum time to fulfil all orders
- Expression Add Operators
- Fixing Two swapped nodes of a BST
- Median of the Subarrays
- Special Digits
- Game Of Subsets
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