6Companies30Days Challenge

Challenge Company 1: Microsoft

1. Arithmetic expression in a Reverse Polish Notation.
2. Combination Sum with a twist.
3. Bulls and Cows
4. Return maximum length of Rotation Function from an integer array.
5. Largest Divisible Subset.
6. How to find a perfect Rectangle.
7. Scheduling a Course.
8. Profitable Path in a Tree.
9. Number of Pairs satisfying Inequality.
10. Shortest Unsorted continuous Subarray
11. Number of ways to arrive at a Destination.
12. Longest Happy Prefix
13. Seat Arrangement in a SpiceJet Problem - Online OA February ‘22
14. Deletions to make an array divisible.
15. Substrings containing all three Characters

Challenge Company 2: Goldman Sachs

1. Max Points on a Line
2. Valid Square
3. Factorial with Trailing Zeroes
4. Number of Boomerangs (Similar to peacocks question)
5. Split Array into Sequences
6. Minimum Consecutive Cards to pick up
7. Count Good Triplets in Array (Profits in a Startup Question)
8. Maximum Points in Archery Competition
9. Initial Public Offering
10. People and Secret
11. Invalid Transactions in an EMI
12. All elements of a binary Search Tree
13. Rhombus Sums in a GRID
14. Nice Pairs in Array (OTT Platforms and John)
15. Good People based on Statements

Challenge Company 3: Adobe

1. Fraction to a recurring Decimal
2. Increasing Triplet Sequence
3. Kth smallest in Lexographical Order
4. Magical String
5. Non Negative Integers without consecutive ones
6. Knight in a Chessboard
7. Matching Subsequences
8. Genetic Mutation
9. Count nodes equal to average of Subtree
10. Max matrix Sum
11. Stock Price Fluctuation
12. Shortest Unsorted Continuous Subarray
13. Game of Dungeon
14. People aware of secret
15. Kth smallest Trimmed number

Challenge Company 4: Flipkart

1. Partition to K Equal Sum Subsets
2. Sale and Offers at Flipkart BBD
3. Remove Zero Sum Consecutive Nodes
4. Winner of the Game
5. Finding the Mountain Array
6. Number of ways to separate Numbers
7. City With the Smallest Number of Neighbors at a Threshold Distance
8. Closest Primes in Range
9. Top K frequent Words
10. Distant Barcodes
11. The new game to Play
12. Check If a String Contains All Binary Codes of Size K
13. Max Area of Island
14. Custom String Sorting
15. House Robber - Very Imp.

Challenge Company 5: Google

1. Maximum Consecutive Floors Without Special Floors
2. Maximum Good People Based on Statements
3. Sort an array
4. Fruit into Baskets
5. Number of Closed Islands
6. Distinct Echo Substrings
7. K divisible Array Substrings
8. Random Pick with Weight (New Project at Google Play Services)
9. Maximum Numbers of Coins you can get
10. Network Delay Time
11. Matrix Block Sum
12. Restore IP Addresses
13. Swim in rising Water (Jeff and the rising hat)
14. Strictly Palindromic Number
15. Max Compatibility Score

Challenge Company 6: Amazon

1. Shuffle an array
2. Cheapest Flights with K stops (Flight system in Europe)
3. Split String into maximum number of Unique Substrings
4. Tweet Count per Frequency
5. Maximum sum of hourglass
6. Maximum Subarray Min Product (Amazon Fresh and the team)
7. Dota2 Senate
8. Destroying Asteroids
9. Most Popular Video Creator
10. Number of Matching Subsequences (The stewart and the puppy)
11. Number of ways to reach a position
12. Maximum Length of Repeated Subarray
13. Top K frequent words
14. Last Moment before all ants Fall out
15. Generate Random point in a circle