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
1128. Number of Equivalent Domino Pairs	Solve	Easy	Adobe+1	Array Counting+1
1133. Largest Unique Number	Solve	Easy	Amazon	Array Hash Table+1
1160. Find Words That Can Be Formed by Characters	Solve	Easy	Amazon+3	Array Counting+2
1165. Single-Row Keyboard	Solve	Easy	Google	Hash Table String
1189. Maximum Number of Balloons	Solve	Easy	Adobe	Counting Hash Table+1
1207. Unique Number of Occurrences	Solve	Easy	Adobe+5	Array Hash Table
1213. Intersection of Three Sorted Arrays	Solve	Easy	Facebook	Array Binary Search+2
1275. Find Winner on a Tic Tac Toe Game	Solve	Easy	Amazon+4	Array Hash Table+2
1331. Rank Transform of an Array	Solve	Easy	Facebook+1	Array Hash Table+1
1346. Check If N and Its Double Exist	Solve	Easy	Google	Array Binary Search+3
1365. How Many Numbers Are Smaller Than the Current Number	Solve	Easy	Amazon+1	Array Counting+2
1370. Increasing Decreasing String	Solve	Easy	Akuna Capital+1	Counting Hash Table+1
1394. Find Lucky Integer in an Array	Solve	Easy	Microsoft	Array Counting+1
1399. Count Largest Group	Solve	Easy	Mercari	Hash Table Math
1426. Counting Elements	Solve	Easy	DRW	Array Hash Table
1436. Destination City	Solve	Easy	Google+1	Array Hash Table+1
1460. Make Two Arrays Equal by Reversing Subarrays	Solve	Easy	Facebook	Array Hash Table+1
1496. Path Crossing	Solve	Easy	Google	Hash Table String
1512. Number of Good Pairs	Solve	Easy	Adobe+2	Array Counting+2
1624. Largest Substring Between Two Equal Characters	Solve	Easy	Google	Hash Table String
1636. Sort Array by Increasing Frequency	Solve	Easy	Amazon+4	Array Hash Table+1
1640. Check Array Formation Through Concatenation	Solve	Easy	Facebook	Array Hash Table
1656. Design an Ordered Stream	Solve	Easy	Bloomberg	Array Data Stream+2
1684. Count the Number of Consistent Strings	Solve	Easy	Amazon+1	Array Bit Manipulation+3
1742. Maximum Number of Balls in a Box	Solve	Easy	AppDynamics+1	Counting Hash Table+1
1748. Sum of Unique Elements	Solve	Easy	Facebook	Array Counting+1
1763. Longest Nice Substring	Solve	Easy	Microsoft	Bit Manipulation Divide and Conquer+3
1790. Check if One String Swap Can Make Strings Equal	Solve	Easy	Facebook	Counting Hash Table+1
1796. Second Largest Digit in a String	Solve	Easy	Softwire	Hash Table String
1805. Number of Different Integers in a String	Solve	Easy	Expedia	Hash Table String
1832. Check if the Sentence Is Pangram	Solve	Easy	Facebook+1	Hash Table String
1876. Substrings of Size Three with Distinct Characters	Solve	Easy	Quora	Counting Hash Table+2
1893. Check if All the Integers in a Range Are Covered	Solve	Easy	Bloomberg	Array Hash Table+1
1897. Redistribute Characters to Make All Strings Equal	Solve	Easy	Moengage	Counting Hash Table+1
1935. Maximum Number of Words You Can Type	Solve	Easy	Quora	Hash Table String
1941. Check if All Characters Have Equal Number of Occurrences	Solve	Easy	Bolt	Counting Hash Table+1
1995. Count Special Quadruplets	Solve	Easy	-	Array Enumeration+1
2006. Count Number of Pairs With Absolute Difference K	Solve	Easy	Amazon	Array Counting+1
2032. Two Out of Three	Solve	Easy	Booking.com	Array Bit Manipulation+1
2053. Kth Distinct String in an Array	Solve	Easy	Amazon	Array Counting+2
2062. Count Vowel Substrings of a String	Solve	Easy	Commvault	Hash Table String
2068. Check Whether Two Strings are Almost Equivalent	Solve	Easy	Salesforce	Counting Hash Table+1
2085. Count Common Words With One Occurrence	Solve	Easy	Jane Street	Array Counting+2
2094. Finding 3-Digit Even Numbers	Solve	Easy	-	Array Enumeration+2
2099. Find Subsequence of Length K With the Largest Sum	Solve	Easy	Accenture	Array Hash Table+2
2103. Rings and Rods	Solve	Easy	Google	Hash Table String
2133. Check if Every Row and Column Contains All Numbers	Solve	Easy	Instacart+1	Array Hash Table+1
2154. Keep Multiplying Found Values by Two	Solve	Easy	Goldman Sachs	Array Hash Table+2
2190. Most Frequent Number Following Key In an Array	Solve	Easy	Google	Array Counting+1
2206. Divide Array Into Equal Pairs	Solve	Easy	Microsoft	Array Bit Manipulation+2