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the_ravisingh
STREAK
06/1430
days
Longest streak/Global longest streak
329 points
Contributor
329 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
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Ace
50k Point
2 submissions in current year
SCHOOL (0)
BASIC (1)
EASY (46)
MEDIUM (325)
HARD (31)
- Reverse a linked list
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Kth from End of Linked List
- Left View of Binary Tree
- DFS of Graph
- BFS of graph
- Square Root
- Kth largest element in BST
- Sum of leaf nodes in BST
- Leaf under budget
- Frequency Game
- N meetings in one room
- Count ways to N'th Stair
- Missing And Repeating
- String Duplicates Removal
- Maximum Sum Bitonic Subsequence
- Reversing the equation
- Does array represent Heap
- Convert an array to reduced form
- Find missing in second array
- Play With OR
- Is Binary Number Multiple of 3
- Number of 1 Bits
- Max Sum Subarray of size K
- Minimum number of Coins
- Perfect Numbers
- Maximum Diamonds
- Balloon Everywhere
- Maximum Number
- Stock Buy and Sell – Max one Transaction Allowed
- Geek and OTP
- Geek & Geekina Purchasing Ice Cream
- High Frequency
- Toggle
- Min Jump
- Binary matrix having maximum number of 1s
- Maximum Identical Bowls
- Valuable String
- Minimum Thorns
- Geek's Plants
- Weight Problem
- GCD 1
- Weird Island
- Play of 3 Glasses!
- Max Splits
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Detect Loop in linked list
- Merge Sort
- Quick Sort
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Heap Sort
- Merge two sorted linked lists
- Tree Boundary Traversal
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- The Celebrity Problem
- Topological sort
- Vertical Tree Traversal
- Find the number of islands
- Find kth element of spiral matrix
- Max sum in the configuration
- Get Min from Stack
- Serialize and deserialize a binary tree
- Wildcard Pattern Matching
- Check if subtree
- Kth element in Matrix
- Validate an IP Address
- Dijkstra Algorithm
- Minimum Spanning Tree
- Sum of permutations
- Multiply two strings
- Implement Atoi
- Palindrome Linked List
- Rat in a Maze Problem - I
- Bipartite Graph
- Merge k Sorted Arrays
- Bridge edge in a graph
- Find triplets with zero sum
- Duplicate Subtree
- Top View of Binary Tree
- Complete Binary Tree
- Counting elements in two arrays
- Leftmost and rightmost nodes of binary tree
- Construct Tree from Inorder & Preorder
- Maximum path sum from any node
- Duplicate Subtrees
- C++ Generic sort
- Count set bits
- Smallest Positive Missing
- Possible Words From Phone Digits
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Index
- Stock buy and sell
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Count the number of possible triangles
- Triplet Sum in Array
- Merge Without Extra Space
- Boolean Matrix
- Spirally traversing a matrix
- Search in a sorted Matrix
- Distance of nearest cell having 1
- Unit Area of largest region of 1's
- Subarrays with equal 1s and 0s
- Sort Elements by Decreasing Frequency
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Nearly sorted
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- Black and White
- Combination Sum
- Unique Subsets
- Minimum Jumps
- Stickler Thief
- Ways to Reach the n'th Stair
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Sort according to an Array
- Allocate Minimum Pages
- X Total Shapes
- Zero Sum Subarrays
- Find whether path exist
- Kth Smallest
- Shortest Common Supersequence
- Rotten Oranges
- Most frequent word in an array of strings
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Word Break
- Stock Buy and Sell – Multiple Transaction Allowed
- Generate Parentheses
- Word Search
- Word Boggle
- Prerequisite Tasks
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Complement
- Maximum Index
- Number of subarrays with maximum values in given range
- Flip Bits
- Equal Sum
- Top k numbers in a stream
- Maximize Number of 1's
- Sum of Middle elements of two sorted arrays
- Equivalent Sub-Arrays
- Count Occurences of Anagrams
- Single Among Doubles
- Pythagorean Triplet
- Happiest Triplet
- Pair Sum Closest to 0
- Minimums in Array
- Form the Largest Number
- Add Binary Strings
- Maximum Product Subarray
- Row with max 1s
- Swapping pairs make sum equal
- Design a tiny URL or URL shortener
- Count of Palindromic substrings in an Index range
- Palindrome SubStrings
- Form a palindrome
- Nuts and Bolts Problem
- Rotate a Matrix
- Longest Subarray with Sum K
- Transform String
- Count the Reversals
- Cutting Binary String
- Beautiful SubSequence
- Maximum length Bitonic Subarray
- Reverse each word in a given string
- Length of the longest substring
- k largest elements
- Longest Common Substring
- Longest Substring with K Uniques
- Valid Expression
- K-th element of two Arrays
- Arranging the array
- Longest Arithmetic Subsequence
- Rod Cutting
- Greater tower sum
- Aditya and his building blocks
- K closest elements
- LCS of three strings
- Longest Palindromic Subsequence
- First negative in every window of size k
- Minimum sum
- Minimize the Heights II
- First and Last Occurrences
- A difference of values and indexes
- Valid Substring
- Minimum number of deletions
- Permutations of a String
- CamelCase Pattern Matching
- Subarrays Product Less than K
- Unique Number II
- Bleak Numbers
- Skip the work
- Modified Game of Nim
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- String Subsequence
- Coin Change (Minimum Coins)
- Number of subsequences in a string divisible by n
- Perfect Sum Problem
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Knapsack with Duplicate Items
- nCr
- Maximum path sum in matrix
- Partition Equal Subset Sum
- Longest Bitonic subsequence
- Min Coin
- Count distinct pairs with difference k
- Count digit groupings of a number
- Probability of Knight
- Subset Sums
- Unique partitions
- Number of paths
- Knight Walk
- Find Prime numbers in a range
- Game with String
- Next Permutation
- Smaller on Left
- Longest Repeating Subsequence
- Decode the string
- Total Decoding Messages
- Stream First Non-repeating
- Largest square formed in a matrix
- Kth Largest in a Stream
- Replace O's with X's
- Special Matrix
- Express as sum of power of natural numbers
- Find the string in grid
- Floyd Warshall
- Flood fill Algorithm
- Shortest Source to Destination Path
- Geek and Number String
- Save Your Life
- Recursively Remove Adjacent Duplicates
- Spiral Matrix
- Transfiguration
- Spidey Sense
- Jump Game
- Max Diff Elements and Indexes
- Iterative Inorder
- Preorder traversal (Iterative)
- Subset Sum Problem
- Form a palindrome
- Search Pattern (Z-algorithm)
- All Palindromic Partitions
- Covid Spread
- Bellman-Ford
- Subarrays with sum K
- Capacity To Ship Packages Within D Days
- Rearrange characters
- Distribute N candies among K people
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Number of Provinces
- Prefix match with other strings
- Maximum sum leaf to root path
- Subsets
- Design Browser History
- IPL 2021 - Match Day 2
- All Unique Permutations of an array
- Course Schedule
- Target Sum
- Minimum times A has to be repeated such that B is a substring of it
- Overlapping Intervals
- Find k-th smallest element in given n ranges
- Reverse a Stack
- Maximum Meetings in One Room
- Max Equal sum of 3 Stacks
- Maximum Winning score
- Interleave the First Half of the Queue with Second Half
- Smallest sum contiguous subarray
- Array Removals
- Wine Buying and Selling
- Replace every element with the least greater element on its right
- Next element with greater frequency
- Number of Distinct Islands
- Shortest Distance in a Binary Maze
- Minimum Multiplications to reach End
- Number Of Enclaves
- Eventual Safe States
- City With the Smallest Number of Neighbors at a Threshold Distance
- Number of Ways to Arrive at Destination
- Path With Minimum Effort
- Cheapest Flights Within K Stops
- Shortest Path in Undirected Graph
- Shortest path in Directed Acyclic Graph
- Koko Eating Bananas
- Find length of the longest subarray containing atmost two distinct integers
- Longest Repeating Character Replacement
- Count Substring
- Binary subarray with sum
- Asteroid Collision
- Minimal Cost
- Stock Buy and Sell – with Cooldown
- Combination Sum III
- Aggressive Cows
- Subset II
- Combination Sum II
- Next Greater Element 2
- Ugly Number II
- Combination Sum II
- Shortest Path in Weighted undirected graph
- Minimum days to make M bouquets
- Hands of Straights
- Buy Stock with Transaction Fee
- Number of Longest Increasing Subsequence
- Lemonade Change
- Non-overlapping Intervals
- Insert Interval
- Partition Array for Maximum Sum
- Longest String Chain
- Print Longest Increasing Subsequence
- Largest Divisible Subset
- Minimize number of Students to be removed
- Maximum Value
- Make array elements unique
- Next Greater Element in Circular Array
- Find minimum number of Laptops required
- Geeks And The String
- Find the longest string
- Minimum repeat to make substring
- Length of the longest subarray with positive product
- Maximum Bipartite Matching
- Minimum Days
- Walls Coloring
- Geeks Island
- Unique Paths in a Grid
- Valid Compressed String
- Fill the Matrix
- Optimal Array
- Good Stones
- Maximum Intersecting Lines
- String rp or pr
- Shy Geek
- Minimum Steps Required
- Maximum Triplet product
- Maximum Length
- Remove the balls
- Prefix Suffix String
- Smaller Sum
- Shortest XY distance in Grid
- Another Coin Change Problem
- Geek's Village and Wells
- Add Minimum Characters
- Maximum subset sum
- Count Total Setbits
- Find Kth permutation
- Possible Path
- Prime Sum Subtrees
- Geek's birthday party - II
- Linked List Group Reverse
- Min distance between two given nodes of a Binary Tree
- Max rectangle
- Distinct occurrences
- Alien Dictionary
- Trapping Rain Water
- Smallest window containing all characters of another string
- Histogram Max Rectangular Area
- Find median in a stream
- Minimum Cost Path
- Word Ladder I
- Median of 2 Sorted Arrays of Different Sizes
- Wildcard string matching
- Edit Distance
- Minimum sum partition
- Palindromic Partitioning
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Median in a row-wise sorted Matrix
- Boolean Parenthesization
- N-Queen Problem
- 132 Geeky Buildings
- Word Ladder II
- Find number of closed islands
- Stock Buy and Sell – Max 2 Transactions Allowed
- MaxSkill
- Count Reverse Pairs
- Largest Sum Cycle
- Fixing Two swapped nodes of a BST
- Walls Coloring II
- Making A Large Island
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