Dashboard Questions Topics Companies Sheets

Hash Table

Topic

645 coding problems covering Hash Table concepts. Master this topic and improve your problem-solving skills.

645

Problems

158

Easy

383

Medium

104

Hard

Difficulty

All645 Easy158 Medium383 Hard104

Title	Solve	Difficulty	Companies	Topics
2168. Unique Substrings With Equal Digit Frequency	Solve	Medium	Expedia	Counting Hash Function+3
2170. Minimum Operations to Make the Array Alternating	Solve	Medium	-	Array Counting+2
2182. Construct String With Repeat Limit	Solve	Medium	Arista Networks	Counting Greedy+3
2186. Minimum Number of Steps to Make Two Strings Anagram II	Solve	Medium	Wealthfront	Counting Hash Table+1
2190. Most Frequent Number Following Key In an Array	Solve	Easy	Google	Array Counting+1
2196. Create Binary Tree From Descriptions	Solve	Medium	Clari+3	Array Binary Tree+2
2201. Count Artifacts That Can Be Extracted	Solve	Medium	IMC	Array Hash Table+1
2206. Divide Array Into Equal Pairs	Solve	Easy	Microsoft	Array Bit Manipulation+2
2215. Find the Difference of Two Arrays	Solve	Easy	Google	Array Hash Table
2225. Find Players With Zero or One Losses	Solve	Medium	Amazon+2	Array Counting+2
2227. Encrypt and Decrypt Strings	Solve	Hard	Duolingo	Array Design+3
2229. Check if an Array Is Consecutive	Solve	Easy	Turbot	Array Hash Table+1
2244. Minimum Rounds to Complete All Tasks	Solve	Medium	Amazon	Array Counting+2
2248. Intersection of Multiple Arrays	Solve	Easy	Uber	Array Counting+2
2249. Count Lattice Points Inside a Circle	Solve	Medium	Google+1	Array Enumeration+3
2251. Number of Flowers in Full Bloom	Solve	Hard	Google	Array Binary Search+4
2254. Design Video Sharing Platform	Solve	Hard	Google	Design Hash Table+2
2260. Minimum Consecutive Cards to Pick Up	Solve	Medium	Google	Array Hash Table+1
2261. K Divisible Elements Subarrays	Solve	Medium	Amazon+1	Array Enumeration+4
2262. Total Appeal of A String	Solve	Hard	Amazon	Dynamic Programming Hash Table+1
2266. Count Number of Texts	Solve	Medium	Amazon+1	Dynamic Programming Hash Table+2
2268. Minimum Number of Keypresses	Solve	Medium	Amazon	Counting Greedy+3
2273. Find Resultant Array After Removing Anagrams	Solve	Easy	Amazon+2	Array Hash Table+2
2275. Largest Combination With Bitwise AND Greater Than Zero	Solve	Medium	Adobe+2	Array Bit Manipulation+2
2283. Check if Number Has Equal Digit Count and Digit Value	Solve	Easy	Google+1	Counting Hash Table+1
2284. Sender With Largest Word Count	Solve	Medium	Google	Array Counting+2
2287. Rearrange Characters to Make Target String	Solve	Easy	Amazon	Counting Hash Table+1
2295. Replace Elements in an Array	Solve	Medium	Amazon	Array Hash Table+1
2301. Match Substring After Replacement	Solve	Hard	Discord	Array Hash Table+2
2306. Naming a Company	Solve	Hard	-	Array Bit Manipulation+3
2309. Greatest English Letter in Upper and Lower Case	Solve	Easy	Microsoft	Enumeration Hash Table+1
2325. Decode the Message	Solve	Easy	Coinbase	Hash Table String
2336. Smallest Number in Infinite Set	Solve	Medium	Amazon+2	Design Hash Table+2
2341. Maximum Number of Pairs in Array	Solve	Easy	Altimetrik+1	Array Counting+1
2342. Max Sum of a Pair With Equal Sum of Digits	Solve	Medium	Amazon+2	Array Hash Table+2
2347. Best Poker Hand	Solve	Easy	Amazon+1	Array Counting+1
2349. Design a Number Container System	Solve	Medium	Google	Design Hash Table+2
2350. Shortest Impossible Sequence of Rolls	Solve	Hard	Amazon+1	Array Greedy+1
2351. First Letter to Appear Twice	Solve	Easy	Google	Bit Manipulation Counting+2
2352. Equal Row and Column Pairs	Solve	Medium	D.E. Shaw	Array Hash Table+2
2353. Design a Food Rating System	Solve	Medium	Amazon	Design Hash Table+2
2354. Number of Excellent Pairs	Solve	Hard	epiFi	Array Binary Search+2
2357. Make Array Zero by Subtracting Equal Amounts	Solve	Easy	Amazon	Array Greedy+4
2363. Merge Similar Items	Solve	Easy	Google	Array Hash Table+2
2364. Count Number of Bad Pairs	Solve	Medium	Google	Array Counting+2
2365. Task Scheduler II	Solve	Medium	Facebook+1	Array Hash Table+1
2367. Number of Arithmetic Triplets	Solve	Easy	-	Array Enumeration+2
2368. Reachable Nodes With Restrictions	Solve	Medium	MakeMyTrip	Array Breadth-First Search+5
2370. Longest Ideal Subsequence	Solve	Medium	MakeMyTrip	Dynamic Programming Hash Table+1
2374. Node With Highest Edge Score	Solve	Medium	Juspay	Graph Hash Table