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
2851. String Transformation	Hard	27.4%	Dynamic Programming Math+2	Read
2852. Sum of Remoteness of All Cells	Medium	70.8%	Array Breadth-First Search+4	Read
2853. Highest Salaries Difference	Easy	73.5%	Database	Read
2854. Rolling Average Steps	Medium	67.8%	Database	Read
2855. Minimum Right Shifts to Sort the Array	Easy	57.6%	Array	Read
2856. Minimum Array Length After Pair Removals	Medium	27.8%	Array Binary Search+4	Read
2857. Count Pairs of Points With Distance k	Medium	32.9%	Array Bit Manipulation+1	Read
2858. Minimum Edge Reversals So Every Node Is Reachable	Hard	59.6%	Breadth-First Search Depth-First Search+2	Read
2859. Sum of Values at Indices With K Set Bits	Easy	86.0%	Array Bit Manipulation	Read
2860. Happy Students	Medium	50.9%	Array Enumeration+1	Read
2861. Maximum Number of Alloys	Medium	41.2%	Array Binary Search	Read
2862. Maximum Element-Sum of a Complete Subset of Indices	Hard	42.3%	Array Math+1	Read
2863. Maximum Length of Semi-Decreasing Subarrays	Medium	70.5%	Array Monotonic Stack+2	Read
2864. Maximum Odd Binary Number	Easy	83.0%	Greedy Math+1	Read
2865. Beautiful Towers I	Medium	44.4%	Array Monotonic Stack+1	Read
2866. Beautiful Towers II	Medium	36.9%	Array Monotonic Stack+1	Read
2867. Count Valid Paths in a Tree	Hard	36.2%	Depth-First Search Dynamic Programming+3	Read
2868. The Wording Game	Hard	53.6%	Array Game Theory+4	Read
2869. Minimum Operations to Collect Elements	Easy	62.2%	Array Bit Manipulation+1	Read
2870. Minimum Number of Operations to Make Array Empty	Medium	61.9%	Array Counting+2	Read
2871. Split Array Into Maximum Number of Subarrays	Medium	42.4%	Array Bit Manipulation+1	Read
2872. Maximum Number of K-Divisible Components	Hard	74.1%	Depth-First Search Tree	Read
2873. Maximum Value of an Ordered Triplet I	Easy	58.2%	Array	Read
2874. Maximum Value of an Ordered Triplet II	Medium	56.4%	Array	Read
2875. Minimum Size Subarray in Infinite Array	Medium	32.1%	Array Hash Table+2	Read
2876. Count Visited Nodes in a Directed Graph	Hard	31.6%	Dynamic Programming Graph+1	Read
2877. Create a DataFrame from List	Easy	81.3%		Read
2878. Get the Size of a DataFrame	Easy	85.0%		Read
2879. Display the First Three Rows	Easy	93.0%		Read
2880. Select Data	Easy	79.2%		Read
2881. Create a New Column	Easy	90.1%		Read
2882. Drop Duplicate Rows	Easy	85.6%		Read
2883. Drop Missing Data	Easy	64.1%		Read
2884. Modify Columns	Easy	92.2%		Read
2885. Rename Columns	Easy	85.4%		Read
2886. Change Data Type	Easy	87.3%		Read
2887. Fill Missing Data	Easy	72.0%		Read
2888. Reshape Data: Concatenate	Easy	90.6%		Read
2889. Reshape Data: Pivot	Easy	82.9%		Read
2890. Reshape Data: Melt	Easy	86.1%		Read
2891. Method Chaining	Easy	76.3%		Read
2892. Minimizing Array After Replacing Pairs With Their Product	Medium	40.6%	Array Dynamic Programming+1	Read
2893. Calculate Orders Within Each Interval	Medium	67.2%	Database	Read
2894. Divisible and Non-divisible Sums Difference	Easy	91.0%	Math	Read
2895. Minimum Processing Time	Medium	70.3%	Array Greedy+1	Read
2896. Apply Operations to Make Two Strings Equal	Medium	27.7%	Dynamic Programming String	Read
2897. Apply Operations on Array to Maximize Sum of Squares	Hard	43.5%	Array Bit Manipulation+2	Read
2898. Maximum Linear Stock Score	Medium	61.7%	Array Hash Table	Read
2899. Last Visited Integers	Easy	62.2%	Array Simulation	Read
2900. Longest Unequal Adjacent Groups Subsequence I	Easy	67.0%	Array Dynamic Programming+2	Read

#2851Hard

String Transformation

Dynamic ProgrammingMathString+1

Acceptance: 27.4%

#2852Medium

Sum of Remoteness of All Cells

ArrayBreadth-First SearchDepth-First Search+3

Acceptance: 70.8%

#2853Easy

Highest Salaries Difference

Database

Acceptance: 73.5%

#2854Medium

Rolling Average Steps

Database

Acceptance: 67.8%

#2855Easy

Minimum Right Shifts to Sort the Array

Array

Acceptance: 57.6%

#2856Medium

Minimum Array Length After Pair Removals

ArrayBinary SearchCounting+3

Acceptance: 27.8%

#2857Medium

Count Pairs of Points With Distance k

ArrayBit ManipulationHash Table

Acceptance: 32.9%

#2858Hard

Minimum Edge Reversals So Every Node Is Reachable

Breadth-First SearchDepth-First SearchDynamic Programming+1

Acceptance: 59.6%

#2859Easy

Sum of Values at Indices With K Set Bits

ArrayBit Manipulation

Acceptance: 86.0%

#2860Medium

Happy Students

ArrayEnumerationSorting

Acceptance: 50.9%

#2861Medium

Maximum Number of Alloys

ArrayBinary Search

Acceptance: 41.2%

#2862Hard

Maximum Element-Sum of a Complete Subset of Indices

ArrayMathNumber Theory

Acceptance: 42.3%

#2863Medium

Maximum Length of Semi-Decreasing Subarrays

ArrayMonotonic StackSorting+1

Acceptance: 70.5%

#2864Easy

Maximum Odd Binary Number

GreedyMathString

Acceptance: 83.0%

#2865Medium

Beautiful Towers I

ArrayMonotonic StackStack

Acceptance: 44.4%

#2866Medium

Beautiful Towers II

ArrayMonotonic StackStack

Acceptance: 36.9%

#2867Hard

Count Valid Paths in a Tree

Depth-First SearchDynamic ProgrammingMath+2

Acceptance: 36.2%

#2868Hard

The Wording Game

ArrayGame TheoryGreedy+3

Acceptance: 53.6%

#2869Easy

Minimum Operations to Collect Elements

ArrayBit ManipulationHash Table

Acceptance: 62.2%

#2870Medium

Minimum Number of Operations to Make Array Empty

ArrayCountingGreedy+1

Acceptance: 61.9%

#2871Medium

Split Array Into Maximum Number of Subarrays

ArrayBit ManipulationGreedy

Acceptance: 42.4%

#2872Hard

Maximum Number of K-Divisible Components

Depth-First SearchTree

Acceptance: 74.1%

#2873Easy

Maximum Value of an Ordered Triplet I

Array

Acceptance: 58.2%

#2874Medium

Maximum Value of an Ordered Triplet II

Array

Acceptance: 56.4%

#2875Medium

Minimum Size Subarray in Infinite Array

ArrayHash TablePrefix Sum+1

Acceptance: 32.1%

#2876Hard

Count Visited Nodes in a Directed Graph

Dynamic ProgrammingGraphMemoization

Acceptance: 31.6%

#2877Easy

Create a DataFrame from List

Acceptance: 81.3%

#2878Easy

Get the Size of a DataFrame

Acceptance: 85.0%

#2879Easy

Display the First Three Rows

Acceptance: 93.0%

#2880Easy

Select Data

Acceptance: 79.2%

#2881Easy

Create a New Column

Acceptance: 90.1%

#2882Easy

Drop Duplicate Rows

Acceptance: 85.6%

#2883Easy

Drop Missing Data

Acceptance: 64.1%

#2884Easy

Modify Columns

Acceptance: 92.2%

#2885Easy

Rename Columns

Acceptance: 85.4%

#2886Easy

Change Data Type

Acceptance: 87.3%

#2887Easy

Fill Missing Data

Acceptance: 72.0%

#2888Easy

Reshape Data: Concatenate

Acceptance: 90.6%

#2889Easy

Reshape Data: Pivot

Acceptance: 82.9%

#2890Easy

Reshape Data: Melt

Acceptance: 86.1%

#2891Easy

Method Chaining

Acceptance: 76.3%

#2892Medium

Minimizing Array After Replacing Pairs With Their Product

ArrayDynamic ProgrammingGreedy

Acceptance: 40.6%

#2893Medium

Calculate Orders Within Each Interval

Database

Acceptance: 67.2%

#2894Easy

Divisible and Non-divisible Sums Difference

Math

Acceptance: 91.0%

#2895Medium

Minimum Processing Time

ArrayGreedySorting

Acceptance: 70.3%

#2896Medium

Apply Operations to Make Two Strings Equal

Dynamic ProgrammingString

Acceptance: 27.7%

#2897Hard

Apply Operations on Array to Maximize Sum of Squares

ArrayBit ManipulationGreedy+1

Acceptance: 43.5%

#2898Medium

Maximum Linear Stock Score

ArrayHash Table

Acceptance: 61.7%

#2899Easy

Last Visited Integers

ArraySimulation

Acceptance: 62.2%

#2900Easy

Longest Unequal Adjacent Groups Subsequence I

ArrayDynamic ProgrammingGreedy+1

Acceptance: 67.0%

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