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Problems

877 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

877 results

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TitleSolutionAcceptDifficultyTopics
1682. Longest Palindromic Subsequence IIVideoPremium
Solution50.1%Medium
Dynamic Programming, String
1684. Count the Number of Consistent StringsVideo
Solution88.1%Easy
Array, Bit Manipulation +3· 3 companies
1689. Partitioning Into Minimum Number Of Deci-Binary NumbersVideo
Solution90.5%Medium
Greedy, String· 4 companies
1694. Reformat Phone NumberVideo
Solution67.7%Easy
String· 1 company
1698. Number of Distinct Substrings in a StringVideoPremium
Solution64.4%Medium
Hash Function, Rolling Hash +3· 4 companies
1702. Maximum Binary String After ChangeVideo
Solution48.1%Medium
Greedy, String· 1 company
1704. Determine if String Halves Are AlikeVideo
Solution78.6%Easy
Counting, String· 1 company
1717. Maximum Score From Removing SubstringsVideo
Solution66.6%Medium
Greedy, Stack +1· 7 companies
1736. Latest Time by Replacing Hidden DigitsVideo
Solution43.7%Easy
Greedy, String· 1 company
1737. Change Minimum Characters to Satisfy One of Three ConditionsVideo
Solution38.4%Medium
Counting, Hash Table +2· 1 company
1745. Palindrome Partitioning IVVideo
Solution45.8%Hard
Dynamic Programming, String· 1 company
1750. Minimum Length of String After Deleting Similar EndsVideo
Solution55.9%Medium
String, Two Pointers· 3 companies
1754. Largest Merge Of Two StringsVideo
Solution54.8%Medium
Greedy, String +1· 1 company
1758. Minimum Changes To Make Alternating Binary StringVideo
Solution67.8%Easy
String· 6 companies
1759. Count Number of Homogenous SubstringsVideo
Solution57.6%Medium
Math, String· 2 companies
1763. Longest Nice SubstringVideo
Solution64.4%Easy
Bit Manipulation, Divide and Conquer +3· 4 companies
1768. Merge Strings AlternatelyVideo
Solution82.1%Easy
String, Two Pointers· 11 companies
1769. Minimum Number of Operations to Move All Balls to Each BoxVideo
Solution90.1%Medium
Array, Prefix Sum +1· 6 companies
1771. Maximize Palindrome Length From SubsequencesVideo
Solution39.0%Hard
Dynamic Programming, String· 1 company
1772. Sort Features by PopularityVideoPremium
Solution66.4%Medium
Array, Hash Table +2· 1 company
1773. Count Items Matching a RuleVideo
Solution85.3%Easy
Array, String· 2 companies
1781. Sum of Beauty of All SubstringsVideo
Solution74.9%Medium
Counting, Hash Table +1· 6 companies
1784. Check if Binary String Has at Most One Segment of OnesVideo
Solution49.0%Easy
String· 3 companies
1790. Check if One String Swap Can Make Strings EqualVideo
Solution49.5%Easy
Counting, Hash Table +1· 5 companies
1794. Count Pairs of Equal Substrings With Minimum DifferenceVideoPremium
Solution62.7%Medium
Greedy, Hash Table +1· 1 company
1796. Second Largest Digit in a StringVideo
Solution55.2%Easy
Hash Table, String· 4 companies
1804. Implement Trie II (Prefix Tree)VideoPremium
Solution63.6%Medium
Design, Hash Table +2· 2 companies
1805. Number of Different Integers in a StringVideo
Solution40.2%Easy
Hash Table, String
1807. Evaluate the Bracket Pairs of a StringVideo
Solution80.8%Medium
Array, Hash Table +1· 2 companies
1812. Determine Color of a Chessboard SquareVideo
Solution79.8%Easy
Math, String· 1 company
1813. Sentence Similarity IIIVideo
Solution48.8%Medium
Array, String +1· 4 companies
1816. Truncate SentenceVideo
Solution86.7%Easy
Array, String· 1 company
1830. Minimum Number of Operations to Make String SortedVideo
Solution50.4%Hard
Combinatorics, Math +1· 1 company
1832. Check if the Sentence Is PangramVideo
Solution84.2%Easy
Hash Table, String· 6 companies
1839. Longest Substring Of All Vowels in OrderVideo
Solution52.3%Medium
Sliding Window, String· 5 companies
1842. Next Palindrome Using Same DigitsVideoPremium
Solution54.2%Hard
String, Two Pointers· 1 company
1844. Replace All Digits with CharactersVideo
Solution82.7%Easy
String· 1 company
1849. Splitting a String Into Descending Consecutive ValuesVideo
Solution37.5%Medium
Backtracking, String
1850. Minimum Adjacent Swaps to Reach the Kth Smallest NumberVideo
Solution72.0%Medium
Greedy, String +1· 2 companies
1859. Sorting the SentenceVideo
Solution84.1%Easy
Sorting, String· 3 companies
1864. Minimum Number of Swaps to Make the Binary String AlternatingVideo
Solution44.1%Medium
Greedy, String· 2 companies
1869. Longer Contiguous Segments of Ones than ZerosVideo
Solution62.4%Easy
String
1871. Jump Game VIIVideo
Solution35.4%Medium
Dynamic Programming, Prefix Sum +2· 4 companies
1876. Substrings of Size Three with Distinct CharactersVideo
Solution77.3%Easy
Counting, Hash Table +2· 5 companies
1880. Check if Word Equals Summation of Two WordsVideo
Solution75.2%Easy
String
1881. Maximum Value after InsertionVideo
Solution39.3%Medium
Greedy, String· 1 company
1888. Minimum Number of Flips to Make the Binary String AlternatingVideo
Solution53.5%Medium
Dynamic Programming, Greedy +2· 5 companies
1896. Minimum Cost to Change the Final Value of ExpressionVideo
Solution50.0%Hard
Dynamic Programming, Math +2· 1 company
1897. Redistribute Characters to Make All Strings EqualVideo
Solution67.0%Easy
Counting, Hash Table +1· 1 company
1898. Maximum Number of Removable CharactersVideo
Solution47.6%Medium
Array, Binary Search +2· 3 companies
Showing 401–450 of 877