Skip to content

For employers Sign in

Make and follow sheets.Sign in

Problems

4,009 problems

Has video Premium only Reset

Array2,209 String870 Hash Table786 Math682 Dynamic Programming666 Sorting504 Greedy480 Binary Search352 Depth-First Search335 Database303 Bit Manipulation283 Matrix278 Tree261 Breadth-First Search255 Two Pointers249 All topics

With video · 4,009 results

Sign in to see which of these you have solved.Sign in

TitleSolutionAcceptDifficultyTopics

1951. All the Pairs With the Maximum Number of Common FollowersVideoPremium

Solution69.8%Medium

Database· 1 company

1952. Three DivisorsVideo

Solution65.2%Easy

Enumeration, Math +1· 3 companies

1953. Maximum Number of Weeks for Which You Can WorkVideo

Solution42.4%Medium

Array, Greedy· 3 companies

1954. Minimum Garden Perimeter to Collect Enough ApplesVideo

Solution55.5%Medium

Binary Search, Math· 1 company

1955. Count Number of Special SubsequencesVideo

Solution53.4%Hard

Array, Dynamic Programming· 1 company

1956. Minimum Time For K Virus Variants to SpreadVideoPremium

–49.5%Hard

Array, Binary Search +3

1957. Delete Characters to Make Fancy StringVideo

Solution74.1%Easy

String· 6 companies

1958. Check if Move is LegalVideo

Solution51.2%Medium

Array, Enumeration +1· 1 company

1959. Minimum Total Space Wasted With K Resizing OperationsVideo

Solution44.6%Medium

Array, Dynamic Programming· 1 company

1960. Maximum Product of the Length of Two Palindromic SubstringsVideo

Solution32.1%Hard

Hash Function, Rolling Hash +1

1961. Check If String Is a Prefix of ArrayVideo

Solution52.7%Easy

Array, String +1· 1 company

1962. Remove Stones to Minimize the TotalVideo

Solution66.2%Medium

Array, Greedy +1· 5 companies

1963. Minimum Number of Swaps to Make the String BalancedVideo

Solution78.0%Medium

Greedy, Stack +2· 12 companies

1964. Find the Longest Valid Obstacle Course at Each PositionVideo

Solution62.8%Hard

Array, Binary Indexed Tree +1· 1 company

1965. Employees With Missing InformationVideo

Solution73.7%Easy

1966. Binary Searchable Numbers in an Unsorted ArrayVideoPremium

Solution63.3%Medium

Array, Binary Search· 3 companies

1967. Number of Strings That Appear as Substrings in WordVideo

Solution86.1%Easy

Array, String· 6 companies

1968. Array With Elements Not Equal to Average of NeighborsVideo

Solution50.9%Medium

Array, Greedy +1· 1 company

1969. Minimum Non-Zero Product of the Array ElementsVideo

Solution37.5%Medium

Greedy, Math +1· 2 companies

1970. Last Day Where You Can Still CrossVideo

Solution68.7%Hard

Array, Binary Search +4· 4 companies

1971. Find if Path Exists in GraphVideo

Solution55.5%Easy

Breadth-First Search, Depth-First Search +2· 5 companies

1972. First and Last Call On the Same DayVideoPremium

Solution50.7%Hard

Database· 1 company

1973. Count Nodes Equal to Sum of DescendantsVideoPremium

Solution77.4%Medium

Binary Tree, Depth-First Search +1· 1 company

1974. Minimum Time to Type Word Using Special TypewriterVideo

Solution79.1%Easy

Greedy, String· 3 companies

1975. Maximum Matrix SumVideo

Solution67.6%Medium

Array, Greedy +1· 6 companies

1976. Number of Ways to Arrive at DestinationVideo

Solution37.4%Medium

Dynamic Programming, Graph +2· 5 companies

1977. Number of Ways to Separate NumbersVideo

Solution21.7%Hard

Dynamic Programming, String +1· 1 company

1978. Employees Whose Manager Left the CompanyVideo

Solution48.9%Easy

Database· 4 companies

1979. Find Greatest Common Divisor of ArrayVideo

Solution83.4%Easy

Array, Math +1· 5 companies

1980. Find Unique Binary StringVideo

Solution81.2%Medium

Array, Backtracking +2· 5 companies

1981. Minimize the Difference Between Target and Chosen ElementsVideo

Solution36.8%Medium

Array, Dynamic Programming +1· 2 companies

1982. Find Array Given Subset SumsVideo

Solution49.7%Hard

Array, Divide and Conquer· 1 company

1983. Widest Pair of Indices With Equal Range SumVideoPremium

Solution54.0%Medium

Array, Hash Table +1· 1 company

1984. Minimum Difference Between Highest and Lowest of K ScoresVideo

Solution66.2%Easy

Array, Sliding Window +1· 5 companies

1985. Find the Kth Largest Integer in the ArrayVideo

Solution48.3%Medium

Array, Divide and Conquer +4· 1 company

1986. Minimum Number of Work Sessions to Finish the TasksVideo

Solution35.3%Medium

Array, Backtracking +3· 2 companies

1987. Number of Unique Good SubsequencesVideo

Solution52.7%Hard

Dynamic Programming, String· 2 companies

1988. Find Cutoff Score for Each SchoolVideoPremium

Solution66.8%Medium

1989. Maximum Number of People That Can Be Caught in TagVideoPremium

Solution49.4%Medium

1990. Count the Number of ExperimentsVideoPremium

Solution49.1%Medium

Database· 1 company

1991. Find the Middle Index in ArrayVideo

Solution70.5%Easy

Array, Prefix Sum· 4 companies

1992. Find All Groups of FarmlandVideo

Solution75.6%Medium

Array, Breadth-First Search +2· 2 companies

1993. Operations on TreeVideo

Solution46.3%Medium

Array, Breadth-First Search +4· 3 companies

1994. The Number of Good SubsetsVideo

Solution37.8%Hard

Array, Bit Manipulation +3· 2 companies

1995. Count Special QuadrupletsVideo

Solution65.1%Easy

Array, Enumeration +1· 3 companies

1996. The Number of Weak Characters in the GameVideo

Solution44.7%Medium

Array, Greedy +3· 1 company

1997. First Day Where You Have Been in All the RoomsVideo

Solution40.5%Medium

Array, Dynamic Programming· 1 company

1998. GCD Sort of an ArrayVideo

Solution51.3%Hard

Array, Math +3· 1 company

1999. Smallest Greater Multiple Made of Two DigitsVideoPremium

Solution47.4%Medium

Enumeration, Math· 1 company

2000. Reverse Prefix of WordVideo

Solution86.3%Easy

Stack, String +1· 5 companies

Showing 1,951–2,000 of 4,009