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Problems

70 problems

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

Easy · 70 results

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TitleSolutionAcceptDifficultyTopics
169. Majority ElementVideo
Solution66.2%Easy
Array, Counting +3· 22 companies
383. Ransom NoteVideo
Solution66.3%Easy
Counting, Hash Table +1· 14 companies
387. First Unique Character in a StringVideo
Solution66.4%Easy
Counting, Hash Table +2· 25 companies
594. Longest Harmonious SubsequenceVideo
Solution65.1%Easy
Array, Counting +3· 7 companies
819. Most Common WordVideo
Solution45.0%Easy
Array, Counting +2· 5 companies
884. Uncommon Words from Two SentencesVideo
Solution75.8%Easy
Counting, Hash Table +1· 2 companies
914. X of a Kind in a Deck of CardsVideo
Solution30.4%Easy
Array, Counting +3· 2 companies
1128. Number of Equivalent Domino PairsVideo
Solution60.7%Easy
Array, Counting +1· 3 companies
1160. Find Words That Can Be Formed by CharactersVideo
Solution71.5%Easy
Array, Counting +2· 7 companies
1189. Maximum Number of BalloonsVideo
Solution64.1%Easy
Counting, Hash Table +1· 6 companies
1213. Intersection of Three Sorted ArraysVideoPremium
Solution80.2%Easy
Array, Binary Search +2· 2 companies
1221. Split a String in Balanced StringsVideo
Solution87.3%Easy
Counting, Greedy +1· 4 companies
1356. Sort Integers by The Number of 1 BitsVideo
Solution82.3%Easy
Array, Bit Manipulation +2· 4 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
1512. Number of Good PairsVideo
Solution89.9%Easy
Array, Counting +2· 10 companies
1603. Design Parking SystemVideo
Solution87.2%Easy
Counting, Design +1· 6 companies
1684. Count the Number of Consistent StringsVideo
Solution88.1%Easy
Array, Bit Manipulation +3· 3 companies
1704. Determine if String Halves Are AlikeVideo
Solution78.6%Easy
Counting, String· 1 company
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
1790. Check if One String Swap Can Make Strings EqualVideo
Solution49.5%Easy
Counting, Hash Table +1· 5 companies
1854. Maximum Population YearVideo
Solution64.4%Easy
Array, Counting +1· 7 companies
1876. Substrings of Size Three with Distinct CharactersVideo
Solution77.3%Easy
Counting, Hash Table +2· 5 companies
1897. Redistribute Characters to Make All Strings EqualVideo
Solution67.0%Easy
Counting, Hash Table +1· 1 company
1941. Check if All Characters Have Equal Number of OccurrencesVideo
Solution79.4%Easy
Counting, Hash Table +1· 4 companies
2006. Count Number of Pairs With Absolute Difference KVideo
Solution85.4%Easy
Array, Counting +1· 4 companies
2053. Kth Distinct String in an ArrayVideo
Solution82.1%Easy
Array, Counting +2· 2 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
2148. Count Elements With Strictly Smaller and Greater Elements Video
Solution59.9%Easy
Array, Counting +1· 1 company
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
2248. Intersection of Multiple ArraysVideo
Solution68.8%Easy
Array, Counting +2· 2 companies
2283. Check if Number Has Equal Digit Count and Digit ValueVideo
Solution73.1%Easy
Counting, Hash Table +1· 2 companies
2287. Rearrange Characters to Make Target StringVideo
Solution63.0%Easy
Counting, Hash Table +1· 1 company
2341. Maximum Number of Pairs in ArrayVideo
Solution76.0%Easy
Array, Counting +1· 1 company
2347. Best Poker HandVideo
Solution61.7%Easy
Array, Counting +1· 2 companies
2351. First Letter to Appear TwiceVideo
Solution74.9%Easy
Bit Manipulation, Counting +2· 2 companies
2404. Most Frequent Even ElementVideo
Solution54.0%Easy
Array, Counting +1· 2 companies
2423. Remove Letter To Equalize FrequencyVideo
Solution19.3%Easy
Counting, Hash Table +1· 4 companies
2506. Count Pairs Of Similar StringsVideo
Solution73.7%Easy
Array, Bit Manipulation +3· 4 companies
2529. Maximum Count of Positive Integer and Negative IntegerVideo
Solution74.3%Easy
Array, Binary Search +1· 5 companies
2586. Count the Number of Vowel Strings in RangeVideo
Solution74.3%Easy
Array, Counting +1· 1 company
2748. Number of Beautiful PairsVideo
Solution52.9%Easy
Array, Counting +3
2833. Furthest Point From OriginVideo
Solution77.2%Easy
Counting, String· 4 companies
2960. Count Tested Devices After Test OperationsVideo
Solution78.8%Easy
Array, Counting +1· 1 company
3005. Count Elements With Maximum FrequencyVideo
Solution79.8%Easy
Array, Counting +1· 8 companies
3046. Split the ArrayVideo
Solution61.7%Easy
Array, Counting +1· 4 companies
Showing 1–50 of 70