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Problems

190 problems

Has videoPremium onlyReset
Array447String249Hash Table190Math173Database113Sorting100Simulation93Counting70Two Pointers70Bit Manipulation54Greedy51Matrix41Tree40Depth-First Search39Binary Tree37All topics

Easy · 190 results

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TitleSolutionAcceptDifficultyTopics
1128. Number of Equivalent Domino PairsVideo
Solution60.7%Easy
Array, Counting +1· 3 companies
1133. Largest Unique NumberVideoPremium
Solution71.3%Easy
Array, Hash Table +1· 1 company
1160. Find Words That Can Be Formed by CharactersVideo
Solution71.5%Easy
Array, Counting +2· 7 companies
1165. Single-Row KeyboardVideoPremium
Solution87.6%Easy
Hash Table, String· 1 company
1189. Maximum Number of BalloonsVideo
Solution64.1%Easy
Counting, Hash Table +1· 6 companies
1207. Unique Number of OccurrencesVideo
Solution78.7%Easy
Array, Hash Table· 5 companies
1213. Intersection of Three Sorted ArraysVideoPremium
Solution80.2%Easy
Array, Binary Search +2· 2 companies
1275. Find Winner on a Tic Tac Toe GameVideo
Solution54.6%Easy
Array, Hash Table +2· 7 companies
1331. Rank Transform of an ArrayVideo
Solution73.9%Easy
Array, Hash Table +1· 7 companies
1346. Check If N and Its Double ExistVideo
Solution41.7%Easy
Array, Binary Search +3· 5 companies
1365. How Many Numbers Are Smaller Than the Current NumberVideo
Solution87.0%Easy
Array, Counting +2· 6 companies
1370. Increasing Decreasing StringVideo
Solution77.3%Easy
Counting, Hash Table +1· 3 companies
1394. Find Lucky Integer in an ArrayVideo
Solution75.5%Easy
Array, Counting +1· 6 companies
1399. Count Largest GroupVideo
Solution74.7%Easy
Hash Table, Math· 5 companies
1426. Counting ElementsVideoPremium
Solution60.9%Easy
Array, Hash Table· 1 company
1436. Destination CityVideo
Solution79.5%Easy
Array, Hash Table +1· 4 companies
1460. Make Two Arrays Equal by Reversing SubarraysVideo
Solution75.9%Easy
Array, Hash Table +1· 4 companies
1496. Path CrossingVideo
Solution62.5%Easy
Hash Table, String· 3 companies
1512. Number of Good PairsVideo
Solution89.9%Easy
Array, Counting +2· 10 companies
1624. Largest Substring Between Two Equal CharactersVideo
Solution68.5%Easy
Hash Table, String· 1 company
1636. Sort Array by Increasing FrequencyVideo
Solution80.8%Easy
Array, Hash Table +1· 10 companies
1640. Check Array Formation Through ConcatenationVideo
Solution57.3%Easy
Array, Hash Table
1656. Design an Ordered StreamVideo
Solution82.6%Easy
Array, Data Stream +2· 3 companies
1684. Count the Number of Consistent StringsVideo
Solution88.1%Easy
Array, Bit Manipulation +3· 3 companies
1742. Maximum Number of Balls in a BoxVideo
Solution74.8%Easy
Counting, Hash Table +1· 3 companies
1748. Sum of Unique ElementsVideo
Solution80.4%Easy
Array, Counting +1· 4 companies
1763. Longest Nice SubstringVideo
Solution64.4%Easy
Bit Manipulation, Divide and Conquer +3· 4 companies
1790. Check if One String Swap Can Make Strings EqualVideo
Solution49.5%Easy
Counting, Hash Table +1· 5 companies
1796. Second Largest Digit in a StringVideo
Solution55.2%Easy
Hash Table, String· 4 companies
1805. Number of Different Integers in a StringVideo
Solution40.2%Easy
Hash Table, String
1832. Check if the Sentence Is PangramVideo
Solution84.2%Easy
Hash Table, String· 6 companies
1876. Substrings of Size Three with Distinct CharactersVideo
Solution77.3%Easy
Counting, Hash Table +2· 5 companies
1893. Check if All the Integers in a Range Are CoveredVideo
Solution51.4%Easy
Array, Hash Table +1· 3 companies
1897. Redistribute Characters to Make All Strings EqualVideo
Solution67.0%Easy
Counting, Hash Table +1· 1 company
1935. Maximum Number of Words You Can TypeVideo
Solution82.9%Easy
Hash Table, String· 4 companies
1941. Check if All Characters Have Equal Number of OccurrencesVideo
Solution79.4%Easy
Counting, Hash Table +1· 4 companies
1995. Count Special QuadrupletsVideo
Solution65.1%Easy
Array, Enumeration +1· 3 companies
2006. Count Number of Pairs With Absolute Difference KVideo
Solution85.4%Easy
Array, Counting +1· 4 companies
2032. Two Out of ThreeVideo
Solution77.5%Easy
Array, Bit Manipulation +1· 2 companies
2053. Kth Distinct String in an ArrayVideo
Solution82.1%Easy
Array, Counting +2· 2 companies
2062. Count Vowel Substrings of a StringVideo
Solution73.6%Easy
Hash Table, String· 12 companies
2068. Check Whether Two Strings are Almost EquivalentVideo
Solution64.5%Easy
Counting, Hash Table +1· 1 company
2085. Count Common Words With One OccurrenceVideo
Solution73.9%Easy
Array, Counting +2· 1 company
2094. Finding 3-Digit Even NumbersVideo
Solution78.8%Easy
Array, Enumeration +2· 5 companies
2099. Find Subsequence of Length K With the Largest SumVideo
Solution57.4%Easy
Array, Hash Table +2· 6 companies
2103. Rings and RodsVideo
Solution81.5%Easy
Hash Table, String· 1 company
2133. Check if Every Row and Column Contains All NumbersVideo
Solution54.0%Easy
Array, Hash Table +1· 4 companies
2154. Keep Multiplying Found Values by TwoVideo
Solution75.1%Easy
Array, Hash Table +2· 4 companies
2190. Most Frequent Number Following Key In an ArrayVideo
Solution59.6%Easy
Array, Counting +1· 1 company
2206. Divide Array Into Equal PairsVideo
Solution79.2%Easy
Array, Bit Manipulation +2· 5 companies
Showing 51–100 of 190