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
2551. Put Marbles in Bags	Hard	72.2%	Array Greedy+2	Read
2552. Count Increasing Quadruplets	Hard	34.6%	Array Binary Indexed Tree+3	Read
2553. Separate the Digits in an Array	Easy	85.7%	Array Simulation	Read
2554. Maximum Number of Integers to Choose From a Range I	Medium	68.0%	Array Binary Search+3	Read
2555. Maximize Win From Two Segments	Medium	38.2%	Array Binary Search+1	Read
2556. Disconnect Path in a Binary Matrix by at Most One Flip	Medium	27.8%	Array Breadth-First Search+3	Read
2557. Maximum Number of Integers to Choose From a Range II	Medium	34.9%	Array Binary Search+2	Read
2558. Take Gifts From the Richest Pile	Easy	75.5%	Array Heap (Priority Queue)+1	Read
2559. Count Vowel Strings in Ranges	Medium	67.8%	Array Prefix Sum+1	Read
2560. House Robber IV	Medium	64.8%	Array Binary Search	Read
2561. Rearranging Fruits	Hard	57.4%	Array Greedy+1	Read
2562. Find the Array Concatenation Value	Easy	71.9%	Array Simulation+1	Read
2563. Count the Number of Fair Pairs	Medium	52.7%	Array Binary Search+2	Read
2564. Substring XOR Queries	Medium	36.1%	Array Bit Manipulation+2	Read
2565. Subsequence With the Minimum Score	Hard	33.8%	Binary Search String+1	Read
2566. Maximum Difference by Remapping a Digit	Easy	75.5%	Greedy Math	Read
2567. Minimum Score by Changing Two Elements	Medium	49.8%	Array Greedy+1	Read
2568. Minimum Impossible OR	Medium	59.5%	Array Bit Manipulation+1	Read
2569. Handling Sum Queries After Update	Hard	31.8%	Array Segment Tree	Read
2570. Merge Two 2D Arrays by Summing Values	Easy	81.7%	Array Hash Table+1	Read
2571. Minimum Operations to Reduce an Integer to 0	Medium	62.9%	Bit Manipulation Dynamic Programming+1	Read
2572. Count the Number of Square-Free Subsets	Medium	26.5%	Array Bit Manipulation+3	Read
2573. Find the String with LCP	Hard	63.3%	Array Dynamic Programming+4	Read
2574. Left and Right Sum Differences	Easy	89.5%	Array Prefix Sum	Read
2575. Find the Divisibility Array of a String	Medium	36.5%	Array Math+1	Read
2576. Find the Maximum Number of Marked Indices	Medium	41.7%	Array Binary Search+3	Read
2577. Minimum Time to Visit a Cell In a Grid	Hard	56.3%	Array Breadth-First Search+4	Read
2578. Split With Minimum Sum	Easy	73.4%	Greedy Math+1	Read
2579. Count Total Number of Colored Cells	Medium	66.1%	Math	Read
2580. Count Ways to Group Overlapping Ranges	Medium	39.1%	Array Sorting	Read
2581. Count Number of Possible Root Nodes	Hard	48.7%	Array Depth-First Search+3	Read
2582. Pass the Pillow	Easy	56.8%	Math Simulation	Read
2583. Kth Largest Sum in a Binary Tree	Medium	59.4%	Binary Tree Breadth-First Search+2	Read
2584. Split the Array to Make Coprime Products	Hard	29.3%	Array Hash Table+2	Read
2585. Number of Ways to Earn Points	Hard	60.2%	Array Dynamic Programming	Read
2586. Count the Number of Vowel Strings in Range	Easy	74.3%	Array Counting+1	Read
2587. Rearrange Array to Maximize Prefix Score	Medium	43.2%	Array Greedy+2	Read
2588. Count the Number of Beautiful Subarrays	Medium	54.7%	Array Bit Manipulation+2	Read
2589. Minimum Time to Complete All Tasks	Hard	40.4%	Array Binary Search+3	Read
2590. Design a Todo List	Medium	59.8%	Array Design+3	Read
2591. Distribute Money to Maximum Children	Easy	20.5%	Greedy Math	Read
2592. Maximize Greatness of an Array	Medium	62.0%	Array Greedy+2	Read
2593. Find Score of an Array After Marking All Elements	Medium	64.5%	Array Hash Table+3	Read
2594. Minimum Time to Repair Cars	Medium	59.6%	Array Binary Search	Read
2595. Number of Even and Odd Bits	Easy	73.4%	Bit Manipulation	Read
2596. Check Knight Tour Configuration	Medium	62.0%	Array Breadth-First Search+3	Read
2597. The Number of Beautiful Subsets	Medium	50.9%	Array Backtracking+5	Read
2598. Smallest Missing Non-negative Integer After Operations	Medium	56.0%	Array Greedy+2	Read
2599. Make the Prefix Sum Non-negative	Medium	51.9%	Array Greedy+1	Read
2600. K Items With the Maximum Sum	Easy	60.2%	Greedy Math	Read

#2551Hard

Put Marbles in Bags

ArrayGreedyHeap (Priority Queue)+1

Acceptance: 72.2%

#2552Hard

Count Increasing Quadruplets

ArrayBinary Indexed TreeDynamic Programming+2

Acceptance: 34.6%

#2553Easy

Separate the Digits in an Array

ArraySimulation

Acceptance: 85.7%

#2554Medium

Maximum Number of Integers to Choose From a Range I

ArrayBinary SearchGreedy+2

Acceptance: 68.0%

#2555Medium

Maximize Win From Two Segments

ArrayBinary SearchSliding Window

Acceptance: 38.2%

#2556Medium

Disconnect Path in a Binary Matrix by at Most One Flip

ArrayBreadth-First SearchDepth-First Search+2

Acceptance: 27.8%

#2557Medium

Maximum Number of Integers to Choose From a Range II

ArrayBinary SearchGreedy+1

Acceptance: 34.9%

#2558Easy

Take Gifts From the Richest Pile

ArrayHeap (Priority Queue)Simulation

Acceptance: 75.5%

#2559Medium

Count Vowel Strings in Ranges

ArrayPrefix SumString

Acceptance: 67.8%

#2560Medium

House Robber IV

ArrayBinary Search

Acceptance: 64.8%

#2561Hard

Rearranging Fruits

ArrayGreedyHash Table

Acceptance: 57.4%

#2562Easy

Find the Array Concatenation Value

ArraySimulationTwo Pointers

Acceptance: 71.9%

#2563Medium

Count the Number of Fair Pairs

ArrayBinary SearchSorting+1

Acceptance: 52.7%

#2564Medium

Substring XOR Queries

ArrayBit ManipulationHash Table+1

Acceptance: 36.1%

#2565Hard

Subsequence With the Minimum Score

Binary SearchStringTwo Pointers

Acceptance: 33.8%

#2566Easy

Maximum Difference by Remapping a Digit

GreedyMath

Acceptance: 75.5%

#2567Medium

Minimum Score by Changing Two Elements

ArrayGreedySorting

Acceptance: 49.8%

#2568Medium

Minimum Impossible OR

ArrayBit ManipulationBrainteaser

Acceptance: 59.5%

#2569Hard

Handling Sum Queries After Update

ArraySegment Tree

Acceptance: 31.8%

#2570Easy

Merge Two 2D Arrays by Summing Values

ArrayHash TableTwo Pointers

Acceptance: 81.7%

#2571Medium

Minimum Operations to Reduce an Integer to 0

Bit ManipulationDynamic ProgrammingGreedy

Acceptance: 62.9%

#2572Medium

Count the Number of Square-Free Subsets

ArrayBit ManipulationBitmask+2

Acceptance: 26.5%

#2573Hard

Find the String with LCP

ArrayDynamic ProgrammingGreedy+3

Acceptance: 63.3%

#2574Easy

Left and Right Sum Differences

ArrayPrefix Sum

Acceptance: 89.5%

#2575Medium

Find the Divisibility Array of a String

ArrayMathString

Acceptance: 36.5%

#2576Medium

Find the Maximum Number of Marked Indices

ArrayBinary SearchGreedy+2

Acceptance: 41.7%

#2577Hard

Minimum Time to Visit a Cell In a Grid

ArrayBreadth-First SearchGraph+3

Acceptance: 56.3%

#2578Easy

Split With Minimum Sum

GreedyMathSorting

Acceptance: 73.4%

#2579Medium

Count Total Number of Colored Cells

Math

Acceptance: 66.1%

#2580Medium

Count Ways to Group Overlapping Ranges

ArraySorting

Acceptance: 39.1%

#2581Hard

Count Number of Possible Root Nodes

ArrayDepth-First SearchDynamic Programming+2

Acceptance: 48.7%

#2582Easy

Pass the Pillow

MathSimulation

Acceptance: 56.8%

#2583Medium

Kth Largest Sum in a Binary Tree

Binary TreeBreadth-First SearchSorting+1

Acceptance: 59.4%

#2584Hard

Split the Array to Make Coprime Products

ArrayHash TableMath+1

Acceptance: 29.3%

#2585Hard

Number of Ways to Earn Points

ArrayDynamic Programming

Acceptance: 60.2%

#2586Easy

Count the Number of Vowel Strings in Range

ArrayCountingString

Acceptance: 74.3%

#2587Medium

Rearrange Array to Maximize Prefix Score

ArrayGreedyPrefix Sum+1

Acceptance: 43.2%

#2588Medium

Count the Number of Beautiful Subarrays

ArrayBit ManipulationHash Table+1

Acceptance: 54.7%

#2589Hard

Minimum Time to Complete All Tasks

ArrayBinary SearchGreedy+2

Acceptance: 40.4%

#2590Medium

Design a Todo List

ArrayDesignHash Table+2

Acceptance: 59.8%

#2591Easy

Distribute Money to Maximum Children

GreedyMath

Acceptance: 20.5%

#2592Medium

Maximize Greatness of an Array

ArrayGreedySorting+1

Acceptance: 62.0%

#2593Medium

Find Score of an Array After Marking All Elements

ArrayHash TableHeap (Priority Queue)+2

Acceptance: 64.5%

#2594Medium

Minimum Time to Repair Cars

ArrayBinary Search

Acceptance: 59.6%

#2595Easy

Number of Even and Odd Bits

Bit Manipulation

Acceptance: 73.4%

#2596Medium

Check Knight Tour Configuration

ArrayBreadth-First SearchDepth-First Search+2

Acceptance: 62.0%

#2597Medium

The Number of Beautiful Subsets

ArrayBacktrackingCombinatorics+4

Acceptance: 50.9%

#2598Medium

Smallest Missing Non-negative Integer After Operations

ArrayGreedyHash Table+1

Acceptance: 56.0%

#2599Medium

Make the Prefix Sum Non-negative

ArrayGreedyHeap (Priority Queue)

Acceptance: 51.9%

#2600Easy

K Items With the Maximum Sum

GreedyMath

Acceptance: 60.2%

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Master DSA with Step-by-Step Solutions

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