S
sachinkumar04
STREAK
120/1465
days
Longest streak/Global longest streak
Language Used
C++, Java
Coding Score
2416
Problem Solved
652
Contest Rating
__
Campus Mantri
gokul_nandakumar294 points
Contributor
294 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
144 submissions in current year
SCHOOL (0)
BASIC (16)
EASY (176)
MEDIUM (385)
HARD (75)
- Reverse alternate nodes in Link List
- Sort a linked list of 0s, 1s and 2s
- Insert in Sorted Circular Linked List
- QuickSort on Doubly Linked List
- Count BST nodes that lie in a given range
- Quick Sort
- Heap Sort
- Diagonal Tree Traversal
- Directed Graph Cycle
- Undirected Graph Cycle
- Absolute List Sorting
- Two Stacks in an Array
- Topological sort
- Merge K sorted linked lists
- Find the number of islands
- Find kth element of spiral matrix
- Get Min from Stack
- Gas Station
- Generate IP Addresses
- Kth smallest element in a Matrix
- Is Binary Tree Heap
- Dijkstra Algorithm
- Largest BST
- Count Palindromic Subsequences
- Multiply two strings
- Bipartite Graph
- Closest in BST
- BST with Dead End
- Pots of Gold Game
- Longest Palindrome in Linked List
- Bridge edge in a graph
- Find triplets with zero sum
- Duplicate Subtree
- k-th Smallest in BST
- Find Common Nodes in two BSTs
- Polynomial Addition
- Delete nodes greater than k
- Union of Two Linked Lists
- Euler circuit and Path
- Binary Tree to CDLL
- Root to Leaf Paths
- Complete Binary Tree
- Counting elements in two arrays
- K Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Predecessor and Successor
- Normal BST to Balanced BST
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- Maximum sum of Non-adjacent nodes
- Mother Vertex
- Ceil in BST
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Majority Element
- Indexes of Subarray Sum
- Triplet Sum in Array
- Merge Without Extra Space
- Level of Nodes
- Make Matrix Beautiful
- Boolean Matrix
- Distance of nearest cell having 1
- Unit Area of largest region of 1's
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Nearly sorted
- Activity Selection
- Job Sequencing Problem
- 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
- Preorder to BST
- X Total Shapes
- Zero Sum Subarrays
- Implement Trie
- Shortest Common Supersequence
- Nth Catalan Number
- Rotten Oranges
- Count subsequences of type a^i, b^j, c^k
- Container With Most Water
- Top K Frequent in Array
- Word Break
- Word Search
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Complement
- Maximum Sub Array
- Pascal Triangle
- Maximum Index
- Flip Bits
- Longest Span in two Binary Arrays
- Equivalent Sub-Arrays
- Count of Subarrays
- Pythagorean Triplet
- Smallest number with at least n trailing zeroes in factorial
- Count Full Binary Trees
- Max Score from Subarray Mins
- Add Binary Strings
- Sort the given array after applying the given equation
- 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
- Number of positive integral solutions
- Cutting Binary String
- Sum of two large numbers
- Shuffle integers
- Sum of XOR of all pairs
- Magnet Array Problem
- Smallest distinct window
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Look and Say Pattern
- Arranging the array
- String formation from substring
- Rod Cutting
- K closest elements
- Missing element of AP
- Maximize the sum of selected numbers from a sorted array to make it empty
- LCS of three strings
- Longest Palindromic Subsequence
- Equalize the Towers
- Minimum sum
- Build the smallest
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Reaching the heights
- Minimum Deletions
- A difference of values and indexes
- Nine Divisors
- Find patterns
- Permutations of a String
- Number following a pattern
- Friends Pairing Problem
- CamelCase Pattern Matching
- Lexicographically smallest string
- Subarrays Product Less than K
- Unique Number II
- Bleak Numbers
- Largest prime factor
- 3 Divisors
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Santa Banta
- Mobile numeric keypad
- Coin Change (Minimum Coins)
- Dice throw
- Perfect Sum Problem
- Power Of 2 and Subsequences
- Firing employees
- Shreyansh and his bits
- Knapsack with Duplicate Items
- nCr
- Number of ways
- Partition Equal Subset Sum
- Longest Bitonic subsequence
- 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
- Unique partitions
- Fill the Tank
- Akku and Binary Numbers
- Number of paths
- Knight Walk
- Stepping Numbers
- LCM Triplet
- Fact Digit Sum
- Jumping Numbers
- A Game of LCM
- Game with String
- Count even length
- Grouping Of Numbers
- Find the Safe Position
- Smith Number
- Missing number in matrix
- Smaller on Left
- Geek and knots
- Filling Bucket
- How Many X's?
- 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
- Print leaf nodes from preorder traversal of BST
- Longest Perfect Piece
- Geek and Strings
- The Smurfs
- Satisfy the equation
- Transitive closure of a Graph
- Two odd Occuring
- Find all distinct subset (or subsequence) sums
- Queries on a Matrix
- Express as sum of power of natural numbers
- Find the string in grid
- Shortest Uncommon Subsequence
- Help a Thief!!!
- Count the paths
- Floyd Warshall
- Flood fill Algorithm
- Shortest Source to Destination Path
- Base Equivalence
- Police and Thieves
- Geek and Number String
- Save Your Life
- Hamiltonian Path
- Jump Game
- Subset Sum Problem
- Search Pattern (Rabin-Karp Algorithm)
- Bellman-Ford
- Coin Piles
- Substrings of length k with k-1 distinct elements
- Maximum XOR of two numbers in an array
- Number of Provinces
- Prefix match with other strings
- Binary Matrix with at most K 1s
- Maximum sum leaf to root path
- Single valued subtree
- BST to max heap
- BST to greater sum tree
- Find rectangle with corners as 1
- Flatten binary tree to linked list
- IPL 2021 - Match Day 2
- Unique Number III
- Clone an Undirected Graph
- Min Cost Climbing Stairs
- Remove and Reverse
- Longest Possible Route in a Matrix with Hurdles
- Find k-th smallest element in given n ranges
- Even Swap
- Reverse a Stack
- K-th Largest Sum Contiguous Subarray
- Enemy
- Max Equal sum of 3 Stacks
- 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
- Next element with greater frequency
- Minimum Swaps
- Construct Binary Tree from String with bracket representation
- Check if all levels of two trees are anagrams or not
- LCS
- Number of Distinct Islands
- Shortest Distance in a Binary Maze
- Number Of Enclaves
- Eventual Safe States
- Alex Travelling
- Number Of Islands
- Merging Details
- Number of Ways to Arrive at Destination
- Shortest path in Directed Acyclic Graph
- Sum of Beauty of All Substrings
- Koko Eating Bananas
- Longest subarray with Atmost two distinct integers
- Sum of subarray minimum
- Asteroid Collision
- Aggressive Cows
- Smallest Divisor
- Task Scheduler
- Hands of Straights
- Lemonade Change
- Maximum Sum Combination
- Stickler Thief II
- 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 Houses
- Max Sum without Adjacents
- Intersection Point in Y Shaped Linked Lists
- BST Downward Traversal
- Count number of free cell
- 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
- 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
- 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
- Modify Linked List-1
- Find Kth permutation
- Fraction pairs with sum 1
- Minimum cost to connect all houses in a city
- Search in an almost Sorted Array
- Longest Subarray with Majority Greater than K
- Subarrays With At Most K Distinct Integers
- K Closest Points to Origin
- Longest Bounded-Difference Subarray
- Lexicographically Largest String After K Deletions
- Group Balls by Sequence
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- AVL Tree Insertion
- Partition array to k subsets
- Alien Dictionary
- Smallest range in K lists
- AVL Tree Deletion
- Nodes at given distance in binary tree
- Number of Turns in Binary Tree
- String Permutations
- Histogram Max Rectangular Area
- Max of min for every window size
- Find median in a stream
- Solve the Sudoku
- Burning Tree
- Next Smallest Palindrome
- Count Smaller elements
- Number of distinct subsequences
- Sum-string
- Edit Distance
- Minimum sum partition
- Number Formation
- Palindromic Partitioning
- Next Happy Number
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Median in a row-wise sorted Matrix
- Boolean Parenthesization
- Longest valid Parentheses
- Word Break - 2
- Brackets in Matrix Chain Multiplication
- Phone directory
- Articulation Point - II
- Assignment Problem
- Minimum X (xor) A
- Count occurrences of a given word in a 2-d array
- Reverse a sublist of a linked list
- 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
- Kth Smallest Number in Multiplication Table
- Stock Buy and Sell – Max 2 Transactions Allowed
- Min Chars to Add for Palindrome
- Minimum time to fulfil all orders
- Expression Add Operators
- MaxSkill
- 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
- Making A Large Island
- Meeting Rooms III
- Minimum Weight Cycle
- Pairwise swap elements of a linked list
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Reverse a Doubly Linked List
- Right View of Binary Tree
- K distance from root
- Height of Binary Tree
- Balanced Tree Check
- Kth from End of Linked List
- Left View of Binary Tree
- Intersection Sorted Linked Lists
- Find Transition Point
- Remove Duplicates from a Sorted Linked List
- Level Order in spiral form
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Lowest Common Ancestor in a BST
- Binary Tree to BST
- Unique rows in boolean matrix
- Third largest element
- Josephus problem
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Inorder Successor in BST
- Insert in a Sorted List
- Sum of leaf nodes in BST
- Symmetric Tree
- Next Right Node
- Find length of Loop
- Median of BST
- Leaf under budget
- Queue Reversal
- Closest Neighbour in BST
- Brothers From Different Roots
- Delete Mid of a Stack
- Predict the Column
- Frequency in Queue
- Get min at pop
- Frequency Game
- First Set Bit
- Check K-th Bit
- Power of 2
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Transpose of Matrix
- Matrix Boundary Traversal
- String Rotated by 2 Places
- Strings Rotations of Each Other
- Isomorphic Strings
- Non Repeating Character
- Parenthesis Checker
- Minimum Cost of ropes
- Union-Find
- Count number of hops
- Missing in Array
- Roman Number to Integer
- Adding Ones
- Sum of elements between k1'th and k2'th smallest elements
- Move All Zeroes to End
- Min sum formed by digits
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- Bitonic Point
- Alternate Positive Negative
- Rotate Bits
- Number of occurrence
- Reversing the equation
- Convert an array to reduced form
- Substrings with same first and last characters
- Find the closest pair from two arrays
- Palindrome String
- Fitting The Array
- Balanced string
- Is Binary Number Multiple of 3
- Minimum Operations
- Adding Array Elements
- Number of 1 Bits
- Nth Fibonacci Number
- Change Bits
- Copy Set Bits in Range
- Shortest path from 1 to n
- Sum 1 to n Divisors
- The Bit Game
- Reach the Nth point
- Minimum number of Coins
- Number Of Open Doors
- Break a number
- Perfect Numbers
- Smallest number with sum of digits as N and divisible by 10^N
- Largest number possible
- Form a number divisible by 3 using array digits
- Least Prime Factor
- Sum of First N Natural Numbers
- Tom and Jerry
- Arithmetic Number
- Surround the 1's
- Help Ishaan
- Trace Path
- Inorder Traversal and BST
- Sequence Fun
- Letters Collection
- Print Pattern
- Primes sum
- Print the pattern
- Chicks in a Zoo
- Maximum Sum LCM
- Check if it is possible to convert one string into another with given constraints
- Minimum Exchange
- Earthquake and the Paint Shop
- Sum of dependencies in a graph
- Count all possible paths from top left to bottom right
- Ball coloring
- Modified Numbers and Queries
- Sum of k smallest elements in BST
- Print Diagonally
- Maximum number of 2X2 squares
- License Key Formatting
- 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
- Find pairs with given sum in doubly linked list
- Same characters
- 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
- Maximum Weight Node
- Type it!
- Min operations
- Geek & Geekina Purchasing Ice Cream
- Toggle
- Last cell in a Matrix
- Jump over Array - 1
- Balloon Everywhere
- String Operations
- 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
- Make Palindrome
- Binary Modulo
- Total Cuts
- Bit Magic
- Array Operations
- Dominant Pairs
- Total Traversal Time
- Unique Number of Occurrences
- Maximize partitions in a String
- Find Only Repetitive Element from 1 to n-1
- Unique Number I
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