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
1851. Minimum Interval to Include Each Query	Hard	54.8%	Array Binary Search+3	Read
1852. Distinct Numbers in Each Subarray	Medium	77.3%	Array Hash Table+1	Read
1853. Convert Date Format	Easy	85.6%	Database	Read
1854. Maximum Population Year	Easy	64.4%	Array Counting+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
1857. Largest Color Value in a Directed Graph	Hard	57.3%	Counting Dynamic Programming+4	Read
1858. Longest Word With All Prefixes	Medium	73.1%	Depth-First Search Trie	Read
1859. Sorting the Sentence	Easy	84.1%	Sorting String	Read
1860. Incremental Memory Leak	Medium	73.0%	Math Simulation	Read
1861. Rotating the Box	Medium	82.4%	Array Matrix+1	Read
1862. Sum of Floored Pairs	Hard	31.4%	Array Binary Search+2	Read
1863. Sum of All Subset XOR Totals	Easy	90.1%	Array Backtracking+4	Read
1864. Minimum Number of Swaps to Make the Binary String Alternating	Medium	44.1%	Greedy String	Read
1865. Finding Pairs With a Certain Sum	Medium	61.6%	Array Design+1	Read
1866. Number of Ways to Rearrange Sticks With K Sticks Visible	Hard	62.7%	Combinatorics Dynamic Programming+1	Read
1867. Orders With Maximum Quantity Above Average	Medium	70.8%	Database	Read
1868. Product of Two Run-Length Encoded Arrays	Medium	59.6%	Array Two Pointers	Read
1869. Longer Contiguous Segments of Ones than Zeros	Easy	62.4%	String	Read
1870. Minimum Speed to Arrive on Time	Medium	47.7%	Array Binary Search	Read
1871. Jump Game VII	Medium	35.4%	Dynamic Programming Prefix Sum+2	Read
1872. Stone Game VIII	Hard	75.2%	Array Dynamic Programming+3	Read
1873. Calculate Special Bonus	Easy	57.5%	Database	Read
1874. Minimize Product Sum of Two Arrays	Medium	89.5%	Array Greedy+1	Read
1875. Group Employees of the Same Salary	Medium	66.9%	Database	Read
1876. Substrings of Size Three with Distinct Characters	Easy	76.7%	Counting Hash Table+2	Read
1877. Minimize Maximum Pair Sum in Array	Medium	83.3%	Array Greedy+2	Read
1878. Get Biggest Three Rhombus Sums in a Grid	Medium	71.4%	Array Heap (Priority Queue)+4	Read
1879. Minimum XOR Sum of Two Arrays	Hard	52.0%	Array Bit Manipulation+2	Read
1880. Check if Word Equals Summation of Two Words	Easy	75.2%	String	Read
1881. Maximum Value after Insertion	Medium	39.3%	Greedy String	Read
1882. Process Tasks Using Servers	Medium	42.0%	Array Heap (Priority Queue)	Read
1883. Minimum Skips to Arrive at Meeting On Time	Hard	38.9%	Array Dynamic Programming	Read
1884. Egg Drop With 2 Eggs and N Floors	Medium	74.6%	Dynamic Programming Math	Read
1885. Count Pairs in Two Arrays	Medium	60.5%	Array Binary Search+2	Read
1886. Determine Whether Matrix Can Be Obtained By Rotation	Easy	68.2%	Array Matrix	Read
1887. Reduction Operations to Make the Array Elements Equal	Medium	72.7%	Array Sorting	Read
1888. Minimum Number of Flips to Make the Binary String Alternating	Medium	53.5%	Dynamic Programming Greedy+2	Read
1889. Minimum Space Wasted From Packaging	Hard	33.6%	Array Binary Search+2	Read
1890. The Latest Login in 2020	Easy	77.4%	Database	Read
1891. Cutting Ribbons	Medium	53.0%	Array Binary Search	Read
1892. Page Recommendations II	Hard	44.4%	Database	Read
1893. Check if All the Integers in a Range Are Covered	Easy	51.4%	Array Hash Table+1	Read
1894. Find the Student that Will Replace the Chalk	Medium	53.2%	Array Binary Search+2	Read
1895. Largest Magic Square	Medium	75.3%	Array Matrix+1	Read
1896. Minimum Cost to Change the Final Value of Expression	Hard	50.0%	Dynamic Programming Math+2	Read
1897. Redistribute Characters to Make All Strings Equal	Easy	67.0%	Counting Hash Table+1	Read
1898. Maximum Number of Removable Characters	Medium	47.6%	Array Binary Search+2	Read
1899. Merge Triplets to Form Target Triplet	Medium	69.5%	Array Greedy	Read
1900. The Earliest and Latest Rounds Where Players Compete	Hard	72.1%	Dynamic Programming Memoization	Read

#1851Hard

Minimum Interval to Include Each Query

ArrayBinary SearchHeap (Priority Queue)+2

Acceptance: 54.8%

#1852Medium

Distinct Numbers in Each Subarray

ArrayHash TableSliding Window

Acceptance: 77.3%

#1853Easy

Convert Date Format

Database

Acceptance: 85.6%

#1854Easy

Maximum Population Year

ArrayCountingPrefix Sum

Acceptance: 64.4%

#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%

#1857Hard

Largest Color Value in a Directed Graph

CountingDynamic ProgrammingGraph+3

Acceptance: 57.3%

#1858Medium

Longest Word With All Prefixes

Depth-First SearchTrie

Acceptance: 73.1%

#1859Easy

Sorting the Sentence

SortingString

Acceptance: 84.1%

#1860Medium

Incremental Memory Leak

MathSimulation

Acceptance: 73.0%

#1861Medium

Rotating the Box

ArrayMatrixTwo Pointers

Acceptance: 82.4%

#1862Hard

Sum of Floored Pairs

ArrayBinary SearchMath+1

Acceptance: 31.4%

#1863Easy

Sum of All Subset XOR Totals

ArrayBacktrackingBit Manipulation+3

Acceptance: 90.1%

#1864Medium

Minimum Number of Swaps to Make the Binary String Alternating

GreedyString

Acceptance: 44.1%

#1865Medium

Finding Pairs With a Certain Sum

ArrayDesignHash Table

Acceptance: 61.6%

#1866Hard

Number of Ways to Rearrange Sticks With K Sticks Visible

CombinatoricsDynamic ProgrammingMath

Acceptance: 62.7%

#1867Medium

Orders With Maximum Quantity Above Average

Database

Acceptance: 70.8%

#1868Medium

Product of Two Run-Length Encoded Arrays

ArrayTwo Pointers

Acceptance: 59.6%

#1869Easy

Longer Contiguous Segments of Ones than Zeros

String

Acceptance: 62.4%

#1870Medium

Minimum Speed to Arrive on Time

ArrayBinary Search

Acceptance: 47.7%

#1871Medium

Jump Game VII

Dynamic ProgrammingPrefix SumSliding Window+1

Acceptance: 35.4%

#1872Hard

Stone Game VIII

ArrayDynamic ProgrammingGame Theory+2

Acceptance: 75.2%

#1873Easy

Calculate Special Bonus

Database

Acceptance: 57.5%

#1874Medium

Minimize Product Sum of Two Arrays

ArrayGreedySorting

Acceptance: 89.5%

#1875Medium

Group Employees of the Same Salary

Database

Acceptance: 66.9%

#1876Easy

Substrings of Size Three with Distinct Characters

CountingHash TableSliding Window+1

Acceptance: 76.7%

#1877Medium

Minimize Maximum Pair Sum in Array

ArrayGreedySorting+1

Acceptance: 83.3%

#1878Medium

Get Biggest Three Rhombus Sums in a Grid

ArrayHeap (Priority Queue)Math+3

Acceptance: 71.4%

#1879Hard

Minimum XOR Sum of Two Arrays

ArrayBit ManipulationBitmask+1

Acceptance: 52.0%

#1880Easy

Check if Word Equals Summation of Two Words

String

Acceptance: 75.2%

#1881Medium

Maximum Value after Insertion

GreedyString

Acceptance: 39.3%

#1882Medium

Process Tasks Using Servers

ArrayHeap (Priority Queue)

Acceptance: 42.0%

#1883Hard

Minimum Skips to Arrive at Meeting On Time

ArrayDynamic Programming

Acceptance: 38.9%

#1884Medium

Egg Drop With 2 Eggs and N Floors

Dynamic ProgrammingMath

Acceptance: 74.6%

#1885Medium

Count Pairs in Two Arrays

ArrayBinary SearchSorting+1

Acceptance: 60.5%

#1886Easy

Determine Whether Matrix Can Be Obtained By Rotation

ArrayMatrix

Acceptance: 68.2%

#1887Medium

Reduction Operations to Make the Array Elements Equal

ArraySorting

Acceptance: 72.7%

#1888Medium

Minimum Number of Flips to Make the Binary String Alternating

Dynamic ProgrammingGreedySliding Window+1

Acceptance: 53.5%

#1889Hard

Minimum Space Wasted From Packaging

ArrayBinary SearchPrefix Sum+1

Acceptance: 33.6%

#1890Easy

The Latest Login in 2020

Database

Acceptance: 77.4%

#1891Medium

Cutting Ribbons

ArrayBinary Search

Acceptance: 53.0%

#1892Hard

Page Recommendations II

Database

Acceptance: 44.4%

#1893Easy

Check if All the Integers in a Range Are Covered

ArrayHash TablePrefix Sum

Acceptance: 51.4%

#1894Medium

Find the Student that Will Replace the Chalk

ArrayBinary SearchPrefix Sum+1

Acceptance: 53.2%

#1895Medium

Largest Magic Square

ArrayMatrixPrefix Sum

Acceptance: 75.3%

#1896Hard

Minimum Cost to Change the Final Value of Expression

Dynamic ProgrammingMathStack+1

Acceptance: 50.0%

#1897Easy

Redistribute Characters to Make All Strings Equal

CountingHash TableString

Acceptance: 67.0%

#1898Medium

Maximum Number of Removable Characters

ArrayBinary SearchString+1

Acceptance: 47.6%

#1899Medium

Merge Triplets to Form Target Triplet

ArrayGreedy

Acceptance: 69.5%

#1900Hard

The Earliest and Latest Rounds Where Players Compete

Dynamic ProgrammingMemoization

Acceptance: 72.1%

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