30-Days-6-Companies

30 Days 6 Companies Challenge Question's Doc

Index

• ⬜ : Unsolved
• ✔️ : Solved

Microsoft

Day 01 - 05

Day 1

Problem No.	Check	Problem	Solution
1	✔️	Evaluate Reverse Polish Notation	Solution
2	✔️	Combination Sum III	Solution
3	✔️	Bulls and Cows	Solution

Day 2

Problem No.	Check	Problem	Solution
1	✔️	Rotate Function	Solution
2	✔️	Largest Divisible Subset	Solution
3	✔️	Perfect Rectangle	Solution

Day 3

Problem No.	Check	Problem	Solution
1	✔️	Course Schedule	Solution
2	✔️	Most Profitable Path in a Tree	Solution
3	✔️	Number of Pairs Satisfying Inequality	Solution

Day 4

Problem No.	Check	Problem	Solution
1	✔️	Shortest Unsorted Continuous Subarray	Solution
2	✔️	Number Of Ways To Arrive At Destination	Solution
3	✔️	Longest Happy Prefix	Solution

Day 5

Problem No.	Check	Problem	Solution
1	✔️	Airplane Seat Assignment Probability	Solution
2	✔️	Minimum Deletions to Make Array Divisible	Solution
3	✔️	Number of Substrings Containing All Three Characters	Solution

Goldman Sachs

Day 06 - 10

Day 6

Problem No.	Check	Problem	Solution
1	✔️	Max Points on a Line	Solution
2	✔️	Valid Square	Solution
3	✔️	Factor Trailing Zeroes	Solution

Day 7

Problem No.	Check	Problem	Solution
1	✔️	Number Of Boomerangs	Solution
2	✔️	Split Array Into Consecutive Subsequence	Solution
3	✔️	Minimum Consecutive Cards To Pick Up	Solution

Day 8

Problem No.	Check	Problem	Solution
1	✔️	Count Good Triplets in an Array	Solution
2	✔️	Maximum Points in an Archery Competition	Solution
3	✔️	IPO	Solution

Day 9

Problem No.	Check	Problem	Solution
1	✔️	Number of People Aware of a Secret	Solution
2	✔️	Invalid Transactions	Solution
3	✔️	All Elements in Two Binary Search Trees	Solution

Day 10

Problem No.	Check	Problem	Solution
1	⬜	Get Biggest Three Rhombus Sums in a Grid	Solution
2	⬜	Count Nice Pairs in an Array	Solution
3	⬜	Maximum Good People Based on Statements	Solution

Adobe

Day 11 - 15

Day 11

Problem No.	Check	Problem	Solution
1	⬜	Fraction to Recurring Decimal	Solution
2	⬜	Increasing Triplet Subsequence	Solution
3	⬜	K-th Smallest in Lexicographical Order	Solution

Day 12

Problem No.	Check	Problem	Solution
1	⬜	Magical String	Solution
2	⬜	Non-negative Integers without Consecutive Ones	Solution
3	⬜	Knight Probability in Chessboard	Solution

Day 13

Problem No.	Check	Problem	Solution
1	⬜	Number of Matching Subsequences	Solution
2	⬜	Minimum Genetic Mutation	Solution
3	⬜	Count Nodes Equal to Average of Subtree	Solution

Day 14

Problem No.	Check	Problem	Solution
1	⬜	Maximum Matrix Sum	Solution
2	⬜	Stock Price Fluctuation	Solution
3	⬜	Shortest Unsorted Continuous Subarray	Solution

Day 15

Problem No.	Check	Problem	Solution
1	⬜	Dungeon Game	Solution
2	⬜	Number of people aware of a secret	Solution
3	⬜	Query Kth Smallest Trimmed Numbder	Solution

Flipkart

Day 16 - 20

Day 16

Problem No.	Check	Problem	Solution
1	⬜	Partition to K Equal Sum Subsets	Solution
2	⬜	Shopping Offers	Solution
3	⬜	Remove Zero Sum Consecutive Nodes from Linked List	Solution

Day 17

Problem No.	Check	Problem	Solution
1	⬜	Find the Winner of the Circular Game	Solution
2	⬜	Find in Mountain Array	Solution
3	⬜	Number of Ways to Separate Numbers	Solution

Day 18

Problem No.	Check	Problem	Solution
1	⬜	City With the Smallest Number of Neighbors at a Threshold Distance	Solution
2	⬜	Closest Primes in Range	Solution
3	⬜	Top K frequent Words	Solution

Day 19

Problem No.	Check	Problem	Solution
1	⬜	Distant Barcodes	Solution
2	⬜	New 21 Game	Solution
3	⬜	Check If a String Contains All Binary Codes of Size K	Solution

Day 20

Problem No.	Check	Problem	Solution
1	⬜	Maximum Area of Island	Solution
2	⬜	Customer Sort String	Solution
3	⬜	House Robber III	Solution

Google

Day 21 - 25

Day 21

Problem No.	Check	Problem	Solution
1	⬜	Maximum Consecutive Floors Without Special Floors	Solution
2	⬜	Maximum Good People Based on Statements	Solution
3	⬜	Sort an Array	Solution

Day 22

Problem No.	Check	Problem	Solution
1	⬜	Fruit Into Baskets	Solution
2	⬜	Number of Closed Islands	Solution
3	⬜	Distinct Echo Substrings	Solution

Day 23

Problem No.	Check	Problem	Solution
1	⬜	K Divisible Elements Subarrays	Solution
2	⬜	Random Pick with Weight	Solution
3	⬜	Maximum Number of Coins You Can Get	Solution

Day 24

Problem No.	Check	Problem	Solution
1	⬜	Network Delay Time	Solution
2	⬜	Matrix Block Sum	Solution
3	⬜	Restore IP Addresses	Solution

Day 25

Problem No.	Check	Problem	Solution
1	⬜	Swim in Rising Water	Solution
2	⬜	Strictly Palindromic Number	Solution
3	⬜	Maximum Compatibility Score Sum	Solution

Amazon

Day 26 - 30

Day 26

Problem No.	Check	Problem	Solution
1	⬜	Shuffle an Array	Solution
2	⬜	Cheapest Flights Within K Stops	Solution
3	⬜	Split a String Into The Max Number Of Unique Substrings	Solution

Day 27

Problem No.	Check	Problem	Solution
1	⬜	Tweet Counts Per Frequency	Solution
2	⬜	Maximum Sum of an Hourglass	Solution
3	⬜	Maximum Subarray Min-Product	Solution

Day 28

Problem No.	Check	Problem	Solution
1	⬜	Dota2 Senate	Solution
2	⬜	Destroying Asteroids	Solution
3	⬜	Most Popular Video Creator	Solution

Day 29

Problem No.	Check	Problem	Solution
1	⬜	Number of matching Subsequences	Solution
2	⬜	Number of Ways to Reach a Position After Exactly k Steps	Solution
3	⬜	Maximum Length of Repeated Subarray	Solution

Day 30

Problem No.	Check	Problem	Solution
1	⬜	Top K Frequent Words	Solution
2	⬜	Last Moment Before All Ants Fall Out of a Plank	Solution
3	⬜	Generate Random Point in a Circle	Solution