Solutions & Explanations

Browse 4,030+ detailed solutions with multiple approaches, code in Python, Java, C++ and more.

4,030 Solutions961 Easy2102 Medium967 Hard

Title	Difficulty	Acceptance	Topics	Solution
1764. Form Array by Concatenating Subarrays of Another Array	Medium	54.7%	Array Greedy+2	Read
1765. Map of Highest Peak	Medium	76.3%	Array Breadth-First Search+1	Read
1769. Minimum Number of Operations to Move All Balls to Each Box	Medium	90.1%	Array Prefix Sum+1	Read
1772. Sort Features by Popularity	Medium	66.4%	Array Hash Table+2	Read
1774. Closest Dessert Cost	Medium	49.0%	Array Backtracking+1	Read
1775. Equal Sum Arrays With Minimum Number of Operations	Medium	54.6%	Array Counting+2	Read
1778. Shortest Path in a Hidden Grid	Medium	44.5%	Breadth-First Search Depth-First Search+2	Read
1780. Check if Number is a Sum of Powers of Three	Medium	79.4%	Math	Read
1781. Sum of Beauty of All Substrings	Medium	74.9%	Counting Hash Table+1	Read
1783. Grand Slam Titles	Medium	83.2%	Database	Read
1785. Minimum Elements to Add to Form a Given Sum	Medium	45.0%	Array Greedy	Read
1786. Number of Restricted Paths From First to Last Node	Medium	41.6%	Dynamic Programming Graph+3	Read
1792. Maximum Average Pass Ratio	Medium	74.1%	Array Greedy+1	Read
1794. Count Pairs of Equal Substrings With Minimum Difference	Medium	62.7%	Greedy Hash Table+1	Read
1797. Design Authentication Manager	Medium	58.5%	Design Doubly-Linked List+2	Read
1798. Maximum Number of Consecutive Values You Can Make	Medium	64.4%	Array Greedy+1	Read
1801. Number of Orders in the Backlog	Medium	54.3%	Array Heap (Priority Queue)+1	Read
1802. Maximum Value at a Given Index in a Bounded Array	Medium	39.0%	Binary Search Greedy	Read
1804. Implement Trie II (Prefix Tree)	Medium	63.6%	Design Hash Table+2	Read
1806. Minimum Number of Operations to Reinitialize a Permutation	Medium	72.9%	Array Math+1	Read
1807. Evaluate the Bracket Pairs of a String	Medium	69.4%	Array Hash Table+1	Read
1810. Minimum Path Cost in a Hidden Grid	Medium	58.7%	Breadth-First Search Depth-First Search+3	Read
1811. Find Interview Candidates	Medium	60.8%	Database	Read
1813. Sentence Similarity III	Medium	48.8%	Array String+1	Read
1814. Count Nice Pairs in an Array	Medium	48.6%	Array Counting+2	Read
1817. Finding the Users Active Minutes	Medium	81.0%	Array Hash Table	Read
1818. Minimum Absolute Sum Difference	Medium	32.9%	Array Binary Search+2	Read
1820. Maximum Number of Accepted Invitations	Medium	52.4%	Array Depth-First Search+2	Read
1823. Find the Winner of the Circular Game	Medium	81.9%	Array Math+3	Read
1824. Minimum Sideway Jumps	Medium	51.6%	Array Dynamic Programming+1	Read
1828. Queries on Number of Points Inside a Circle	Medium	86.9%	Array Geometry+1	Read
1829. Maximum XOR for Each Query	Medium	84.7%	Array Bit Manipulation+1	Read
1831. Maximum Transaction Each Day	Medium	82.1%	Database	Read
1833. Maximum Ice Cream Bars	Medium	77.2%	Array Counting Sort+2	Read
1834. Single-Threaded CPU	Medium	48.1%	Array Heap (Priority Queue)+1	Read
1836. Remove Duplicates From an Unsorted Linked List	Medium	75.6%	Hash Table Linked List	Read
1838. Frequency of the Most Frequent Element	Medium	44.7%	Array Binary Search+4	Read
1839. Longest Substring Of All Vowels in Order	Medium	52.3%	Sliding Window String	Read
1841. League Statistics	Medium	53.4%	Database	Read
1843. Suspicious Bank Accounts	Medium	45.0%	Database	Read
1845. Seat Reservation Manager	Medium	67.1%	Design Heap (Priority Queue)	Read
1846. Maximum Element After Decreasing and Rearranging	Medium	69.2%	Array Greedy+1	Read
1849. Splitting a String Into Descending Consecutive Values	Medium	37.5%	Backtracking String	Read
1850. Minimum Adjacent Swaps to Reach the Kth Smallest Number	Medium	72.0%	Greedy String+1	Read
1852. Distinct Numbers in Each Subarray	Medium	77.3%	Array Hash Table+1	Read
1855. Maximum Distance Between a Pair of Values	Medium	61.3%	Array Binary Search+1	Read
1856. Maximum Subarray Min-Product	Medium	40.7%	Array Monotonic Stack+2	Read
1858. Longest Word With All Prefixes	Medium	73.1%	Depth-First Search Trie	Read
1860. Incremental Memory Leak	Medium	73.0%	Math Simulation	Read
1861. Rotating the Box	Medium	82.4%	Array Matrix+1	Read

#1764Medium

Form Array by Concatenating Subarrays of Another Array

ArrayGreedyString Matching+1

Acceptance: 54.7%

#1765Medium

Map of Highest Peak

ArrayBreadth-First SearchMatrix

Acceptance: 76.3%

#1769Medium

Minimum Number of Operations to Move All Balls to Each Box

ArrayPrefix SumString

Acceptance: 90.1%

#1772Medium

Sort Features by Popularity

ArrayHash TableSorting+1

Acceptance: 66.4%

#1774Medium

Closest Dessert Cost

ArrayBacktrackingDynamic Programming

Acceptance: 49.0%

#1775Medium

Equal Sum Arrays With Minimum Number of Operations

ArrayCountingGreedy+1

Acceptance: 54.6%

#1778Medium

Shortest Path in a Hidden Grid

Breadth-First SearchDepth-First SearchGraph+1

Acceptance: 44.5%

#1780Medium

Check if Number is a Sum of Powers of Three

Math

Acceptance: 79.4%

#1781Medium

Sum of Beauty of All Substrings

CountingHash TableString

Acceptance: 74.9%

#1783Medium

Grand Slam Titles

Database

Acceptance: 83.2%

#1785Medium

Minimum Elements to Add to Form a Given Sum

ArrayGreedy

Acceptance: 45.0%

#1786Medium

Number of Restricted Paths From First to Last Node

Dynamic ProgrammingGraphHeap (Priority Queue)+2

Acceptance: 41.6%

#1792Medium

Maximum Average Pass Ratio

ArrayGreedyHeap (Priority Queue)

Acceptance: 74.1%

#1794Medium

Count Pairs of Equal Substrings With Minimum Difference

GreedyHash TableString

Acceptance: 62.7%

#1797Medium

Design Authentication Manager

DesignDoubly-Linked ListHash Table+1

Acceptance: 58.5%

#1798Medium

Maximum Number of Consecutive Values You Can Make

ArrayGreedySorting

Acceptance: 64.4%

#1801Medium

Number of Orders in the Backlog

ArrayHeap (Priority Queue)Simulation

Acceptance: 54.3%

#1802Medium

Maximum Value at a Given Index in a Bounded Array

Binary SearchGreedy

Acceptance: 39.0%

#1804Medium

Implement Trie II (Prefix Tree)

DesignHash TableString+1

Acceptance: 63.6%

#1806Medium

Minimum Number of Operations to Reinitialize a Permutation

ArrayMathSimulation

Acceptance: 72.9%

#1807Medium

Evaluate the Bracket Pairs of a String

ArrayHash TableString

Acceptance: 69.4%

#1810Medium

Minimum Path Cost in a Hidden Grid

Breadth-First SearchDepth-First SearchGraph+2

Acceptance: 58.7%

#1811Medium

Find Interview Candidates

Database

Acceptance: 60.8%

#1813Medium

Sentence Similarity III

ArrayStringTwo Pointers

Acceptance: 48.8%

#1814Medium

Count Nice Pairs in an Array

ArrayCountingHash Table+1

Acceptance: 48.6%

#1817Medium

Finding the Users Active Minutes

ArrayHash Table

Acceptance: 81.0%

#1818Medium

Minimum Absolute Sum Difference

ArrayBinary SearchOrdered Set+1

Acceptance: 32.9%

#1820Medium

Maximum Number of Accepted Invitations

ArrayDepth-First SearchGraph+1

Acceptance: 52.4%

#1823Medium

Find the Winner of the Circular Game

ArrayMathQueue+2

Acceptance: 81.9%

#1824Medium

Minimum Sideway Jumps

ArrayDynamic ProgrammingGreedy

Acceptance: 51.6%

#1828Medium

Queries on Number of Points Inside a Circle

ArrayGeometryMath

Acceptance: 86.9%

#1829Medium

Maximum XOR for Each Query

ArrayBit ManipulationPrefix Sum

Acceptance: 84.7%

#1831Medium

Maximum Transaction Each Day

Database

Acceptance: 82.1%

#1833Medium

Maximum Ice Cream Bars

ArrayCounting SortGreedy+1

Acceptance: 77.2%

#1834Medium

Single-Threaded CPU

ArrayHeap (Priority Queue)Sorting

Acceptance: 48.1%

#1836Medium

Remove Duplicates From an Unsorted Linked List

Hash TableLinked List

Acceptance: 75.6%

#1838Medium

Frequency of the Most Frequent Element

ArrayBinary SearchGreedy+3

Acceptance: 44.7%

#1839Medium

Longest Substring Of All Vowels in Order

Sliding WindowString

Acceptance: 52.3%

#1841Medium

League Statistics

Database

Acceptance: 53.4%

#1843Medium

Suspicious Bank Accounts

Database

Acceptance: 45.0%

#1845Medium

Seat Reservation Manager

DesignHeap (Priority Queue)

Acceptance: 67.1%

#1846Medium

Maximum Element After Decreasing and Rearranging

ArrayGreedySorting

Acceptance: 69.2%

#1849Medium

Splitting a String Into Descending Consecutive Values

BacktrackingString

Acceptance: 37.5%

#1850Medium

Minimum Adjacent Swaps to Reach the Kth Smallest Number

GreedyStringTwo Pointers

Acceptance: 72.0%

#1852Medium

Distinct Numbers in Each Subarray

ArrayHash TableSliding Window

Acceptance: 77.3%

#1855Medium

Maximum Distance Between a Pair of Values

ArrayBinary SearchTwo Pointers

Acceptance: 61.3%

#1856Medium

Maximum Subarray Min-Product

ArrayMonotonic StackPrefix Sum+1

Acceptance: 40.7%

#1858Medium

Longest Word With All Prefixes

Depth-First SearchTrie

Acceptance: 73.1%

#1860Medium

Incremental Memory Leak

MathSimulation

Acceptance: 73.0%

#1861Medium

Rotating the Box

ArrayMatrixTwo Pointers

Acceptance: 82.4%

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