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
1938. Maximum Genetic Difference Query	Solve	Hard	Media.Net	Array Bit Manipulation+3
1948. Delete Duplicate Folders in System	Solve	Hard	Booking.com+1	Array Hash Function+3
2009. Minimum Number of Operations to Make Array Continuous	Solve	Hard	Amazon+3	Array Binary Search+2
2025. Maximum Number of Ways to Partition an Array	Solve	Hard	Google	Array Counting+3
2122. Recover the Original Array	Solve	Hard	Google	Array Enumeration+3
2227. Encrypt and Decrypt Strings	Solve	Hard	Duolingo	Array Design+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
2262. Total Appeal of A String	Solve	Hard	Amazon	Dynamic Programming 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
2350. Shortest Impossible Sequence of Rolls	Solve	Hard	Amazon+1	Array Greedy+1
2354. Number of Excellent Pairs	Solve	Hard	epiFi	Array Binary Search+2
2402. Meeting Rooms III	Solve	Hard	Amazon+4	Array Hash Table+3
2421. Number of Good Paths	Solve	Hard	Google	Array Graph+4
2488. Count Subarrays With Median K	Solve	Hard	Google+1	Array Hash Table+1
2499. Minimum Total Cost to Make Arrays Unequal	Solve	Hard	Flipkart+1	Array Counting+2
2508. Add Edges to Make Degrees of All Nodes Even	Solve	Hard	HRT	Graph Hash Table
2514. Count Anagrams	Solve	Hard	Mathworks	Combinatorics Counting+3
2524. Maximum Frequency Score of a Subarray	Solve	Hard	PayPal	Array Hash Table+3
2547. Minimum Cost to Split an Array	Solve	Hard	Indeed	Array Counting+2
2561. Rearranging Fruits	Solve	Hard	Oracle	Array Greedy+1
2581. Count Number of Possible Root Nodes	Solve	Hard	-	Array Depth-First Search+3
2584. Split the Array to Make Coprime Products	Solve	Hard	Zomato	Array Hash Table+2
2713. Maximum Strictly Increasing Cells in a Matrix	Solve	Hard	Amazon+1	Array Binary Search+6
2732. Find a Good Subset of the Matrix	Solve	Hard	-	Array Bit Manipulation+2
2763. Sum of Imbalance Numbers of All Subarrays	Solve	Hard	Adobe+1	Array Hash Table+1
2781. Length of the Longest Valid Substring	Solve	Hard	Amazon	Array Hash Table+2
2813. Maximum Elegance of a K-Length Subsequence	Solve	Hard	-	Array Greedy+4
2842. Count K-Subsequences of a String With Maximum Beauty	Solve	Hard	Google	Combinatorics Greedy+3
2897. Apply Operations on Array to Maximize Sum of Squares	Solve	Hard	Sprinklr	Array Bit Manipulation+2
2902. Count of Sub-Multisets With Bounded Sum	Solve	Hard	-	Array Dynamic Programming+2
2935. Maximum Strong Pair XOR II	Solve	Hard	ZScaler	Array Bit Manipulation+3
2949. Count Beautiful Substrings II	Solve	Hard	Amazon	Hash Table Math+3
2953. Count Complete Substrings	Solve	Hard	Meesho	Hash Table Sliding Window+1
2963. Count the Number of Good Partitions	Solve	Hard	Google	Array Combinatorics+2
2983. Palindrome Rearrangement Queries	Solve	Hard	-	Hash Table Prefix Sum+1
3013. Divide an Array Into Subarrays With Minimum Cost II	Solve	Hard	-	Array Hash Table+2
3104. Find Longest Self-Contained Substring	Solve	Hard	-	Binary Search Hash Table+2
3134. Find the Median of the Uniqueness Array	Solve	Hard	-	Array Binary Search+2
3177. Find the Maximum Length of a Good Subsequence II	Solve	Hard	-	Array Dynamic Programming+1
3267. Count Almost Equal Pairs II	Solve	Hard	-	Array Counting+3
3272. Find the Count of Good Integers	Solve	Hard	-	Combinatorics Enumeration+2
3279. Maximum Total Area Occupied by Pistons	Solve	Hard	-	Array Counting+4
3298. Count Substrings That Can Be Rearranged to Contain a String II	Solve	Hard	-	Hash Table Sliding Window+1
3299. Sum of Consecutive Subsequences	Solve	Hard	-	Array Dynamic Programming+1
3311. Construct 2D Grid Matching Graph Layout	Solve	Hard	-	Array Graph+2
3312. Sorted GCD Pair Queries	Solve	Hard	-	Array Binary Search+6
3321. Find X-Sum of All K-Long Subarrays II	Solve	Hard	-	Array Hash Table+2
3327. Check if DFS Strings Are Palindromes	Solve	Hard	-	Array Depth-First Search+4