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
2801. Count Stepping Numbers in Range	Hard	29.9%	Dynamic Programming String	Read
2802. Find The K-th Lucky Number	Medium	76.1%	Bit Manipulation Math+1	Read
2803. Factorial Generator	Easy	85.8%		Read
2804. Array Prototype ForEach	Easy	88.2%		Read
2805. Custom Interval	Medium	81.7%		Read
2806. Account Balance After Rounded Purchase	Easy	58.0%	Math	Read
2807. Insert Greatest Common Divisors in Linked List	Medium	91.4%	Linked List Math+1	Read
2808. Minimum Seconds to Equalize a Circular Array	Medium	28.5%	Array Hash Table	Read
2809. Minimum Time to Make Array Sum At Most x	Hard	28.1%	Array Dynamic Programming+1	Read
2810. Faulty Keyboard	Easy	80.7%	Simulation String	Read
2811. Check if it is Possible to Split Array	Medium	34.5%	Array Dynamic Programming+1	Read
2812. Find the Safest Path in a Grid	Medium	57.0%	Array Binary Search+3	Read
2813. Maximum Elegance of a K-Length Subsequence	Hard	29.2%	Array Greedy+4	Read
2814. Minimum Time Takes to Reach Destination Without Drowning	Hard	54.7%	Array Breadth-First Search+1	Read
2815. Max Pair Sum in an Array	Easy	61.1%	Array Hash Table	Read
2816. Double a Number Represented as a Linked List	Medium	61.4%	Linked List Math+1	Read
2817. Minimum Absolute Difference Between Elements With Constraint	Medium	38.0%	Array Binary Search+1	Read
2818. Apply Operations to Maximize Score	Hard	53.7%	Array Greedy+4	Read
2819. Minimum Relative Loss After Buying Chocolates	Hard	47.4%	Array Binary Search+2	Read
2820. Election Results	Medium	66.7%		Read
2821. Delay the Resolution of Each Promise	Medium	68.4%		Read
2822. Inversion of Object	Easy	58.8%		Read
2823. Deep Object Filter	Medium	54.6%		Read
2824. Count Pairs Whose Sum is Less than Target	Easy	87.4%	Array Binary Search+2	Read
2825. Make String a Subsequence Using Cyclic Increments	Medium	65.7%	String Two Pointers	Read
2826. Sorting Three Groups	Medium	43.5%	Array Binary Search+1	Read
2827. Number of Beautiful Integers in the Range	Hard	23.1%	Dynamic Programming Math	Read
2828. Check if a String Is an Acronym of Words	Easy	82.8%	Array String	Read
2829. Determine the Minimum Sum of a k-avoiding Array	Medium	61.0%	Greedy Math	Read
2830. Maximize the Profit as the Salesman	Medium	38.7%	Array Binary Search+3	Read
2831. Find the Longest Equal Subarray	Medium	38.4%	Array Binary Search+2	Read
2832. Maximal Range That Each Element Is Maximum in It	Medium	75.5%	Array Monotonic Stack+1	Read
2833. Furthest Point From Origin	Easy	77.2%	Counting String	Read
2834. Find the Minimum Possible Sum of a Beautiful Array	Medium	35.1%	Greedy Math	Read
2835. Minimum Operations to Form Subsequence With Target Sum	Hard	32.5%	Array Bit Manipulation+1	Read
2836. Maximize Value of Function in a Ball Passing Game	Hard	31.3%	Array Bit Manipulation+1	Read
2837. Total Traveled Distance	Easy	76.1%	Database	Read
2838. Maximum Coins Heroes Can Collect	Medium	68.7%	Array Binary Search+3	Read
2839. Check if Strings Can be Made Equal With Operations I	Easy	61.8%	String	Read
2840. Check if Strings Can be Made Equal With Operations II	Medium	73.9%	Hash Table Sorting+1	Read
2841. Maximum Sum of Almost Unique Subarray	Medium	41.5%	Array Hash Table+1	Read
2842. Count K-Subsequences of a String With Maximum Beauty	Hard	30.2%	Combinatorics Greedy+3	Read
2843. Count Symmetric Integers	Easy	83.1%	Enumeration Math	Read
2844. Minimum Operations to Make a Special Number	Medium	38.5%	Enumeration Greedy+2	Read
2845. Count of Interesting Subarrays	Medium	58.0%	Array Hash Table+1	Read
2846. Minimum Edge Weight Equilibrium Queries in a Tree	Hard	46.1%	Array Graph+2	Read
2847. Smallest Number With Given Digit Product	Medium	43.8%	Greedy Math	Read
2848. Points That Intersect With Cars	Easy	73.4%	Array Hash Table+1	Read
2849. Determine if a Cell Is Reachable at a Given Time	Medium	37.2%	Math	Read
2850. Minimum Moves to Spread Stones Over Grid	Medium	46.1%	Array Breadth-First Search+2	Read

#2801Hard

Count Stepping Numbers in Range

Dynamic ProgrammingString

Acceptance: 29.9%

#2802Medium

Find The K-th Lucky Number

Bit ManipulationMathString

Acceptance: 76.1%

#2803Easy

Factorial Generator

Acceptance: 85.8%

#2804Easy

Array Prototype ForEach

Acceptance: 88.2%

#2805Medium

Custom Interval

Acceptance: 81.7%

#2806Easy

Account Balance After Rounded Purchase

Math

Acceptance: 58.0%

#2807Medium

Insert Greatest Common Divisors in Linked List

Linked ListMathNumber Theory

Acceptance: 91.4%

#2808Medium

Minimum Seconds to Equalize a Circular Array

ArrayHash Table

Acceptance: 28.5%

#2809Hard

Minimum Time to Make Array Sum At Most x

ArrayDynamic ProgrammingSorting

Acceptance: 28.1%

#2810Easy

Faulty Keyboard

SimulationString

Acceptance: 80.7%

#2811Medium

Check if it is Possible to Split Array

ArrayDynamic ProgrammingGreedy

Acceptance: 34.5%

#2812Medium

Find the Safest Path in a Grid

ArrayBinary SearchBreadth-First Search+2

Acceptance: 57.0%

#2813Hard

Maximum Elegance of a K-Length Subsequence

ArrayGreedyHash Table+3

Acceptance: 29.2%

#2814Hard

Minimum Time Takes to Reach Destination Without Drowning

ArrayBreadth-First SearchMatrix

Acceptance: 54.7%

#2815Easy

Max Pair Sum in an Array

ArrayHash Table

Acceptance: 61.1%

#2816Medium

Double a Number Represented as a Linked List

Linked ListMathStack

Acceptance: 61.4%

#2817Medium

Minimum Absolute Difference Between Elements With Constraint

ArrayBinary SearchOrdered Set

Acceptance: 38.0%

#2818Hard

Apply Operations to Maximize Score

ArrayGreedyMath+3

Acceptance: 53.7%

#2819Hard

Minimum Relative Loss After Buying Chocolates

ArrayBinary SearchPrefix Sum+1

Acceptance: 47.4%

#2820Medium

Election Results

Acceptance: 66.7%

#2821Medium

Delay the Resolution of Each Promise

Acceptance: 68.4%

#2822Easy

Inversion of Object

Acceptance: 58.8%

#2823Medium

Deep Object Filter

Acceptance: 54.6%

#2824Easy

Count Pairs Whose Sum is Less than Target

ArrayBinary SearchSorting+1

Acceptance: 87.4%

#2825Medium

Make String a Subsequence Using Cyclic Increments

StringTwo Pointers

Acceptance: 65.7%

#2826Medium

Sorting Three Groups

ArrayBinary SearchDynamic Programming

Acceptance: 43.5%

#2827Hard

Number of Beautiful Integers in the Range

Dynamic ProgrammingMath

Acceptance: 23.1%

#2828Easy

Check if a String Is an Acronym of Words

ArrayString

Acceptance: 82.8%

#2829Medium

Determine the Minimum Sum of a k-avoiding Array

GreedyMath

Acceptance: 61.0%

#2830Medium

Maximize the Profit as the Salesman

ArrayBinary SearchDynamic Programming+2

Acceptance: 38.7%

#2831Medium

Find the Longest Equal Subarray

ArrayBinary SearchHash Table+1

Acceptance: 38.4%

#2832Medium

Maximal Range That Each Element Is Maximum in It

ArrayMonotonic StackStack

Acceptance: 75.5%

#2833Easy

Furthest Point From Origin

CountingString

Acceptance: 77.2%

#2834Medium

Find the Minimum Possible Sum of a Beautiful Array

GreedyMath

Acceptance: 35.1%

#2835Hard

Minimum Operations to Form Subsequence With Target Sum

ArrayBit ManipulationGreedy

Acceptance: 32.5%

#2836Hard

Maximize Value of Function in a Ball Passing Game

ArrayBit ManipulationDynamic Programming

Acceptance: 31.3%

#2837Easy

Total Traveled Distance

Database

Acceptance: 76.1%

#2838Medium

Maximum Coins Heroes Can Collect

ArrayBinary SearchPrefix Sum+2

Acceptance: 68.7%

#2839Easy

Check if Strings Can be Made Equal With Operations I

String

Acceptance: 61.8%

#2840Medium

Check if Strings Can be Made Equal With Operations II

Hash TableSortingString

Acceptance: 73.9%

#2841Medium

Maximum Sum of Almost Unique Subarray

ArrayHash TableSliding Window

Acceptance: 41.5%

#2842Hard

Count K-Subsequences of a String With Maximum Beauty

CombinatoricsGreedyHash Table+2

Acceptance: 30.2%

#2843Easy

Count Symmetric Integers

EnumerationMath

Acceptance: 83.1%

#2844Medium

Minimum Operations to Make a Special Number

EnumerationGreedyMath+1

Acceptance: 38.5%

#2845Medium

Count of Interesting Subarrays

ArrayHash TablePrefix Sum

Acceptance: 58.0%

#2846Hard

Minimum Edge Weight Equilibrium Queries in a Tree

ArrayGraphStrongly Connected Component+1

Acceptance: 46.1%

#2847Medium

Smallest Number With Given Digit Product

GreedyMath

Acceptance: 43.8%

#2848Easy

Points That Intersect With Cars

ArrayHash TablePrefix Sum

Acceptance: 73.4%

#2849Medium

Determine if a Cell Is Reachable at a Given Time

Math

Acceptance: 37.2%

#2850Medium

Minimum Moves to Spread Stones Over Grid

ArrayBreadth-First SearchDynamic Programming+1

Acceptance: 46.1%

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