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
2501. Longest Square Streak in an Array	Medium	53.1%	Array Binary Search+3	Read
2502. Design Memory Allocator	Medium	50.4%	Array Design+2	Read
2503. Maximum Number of Points From Grid Queries	Hard	59.3%	Array Breadth-First Search+5	Read
2504. Concatenate the Name and the Profession	Easy	77.0%	Database	Read
2505. Bitwise OR of All Subsequence Sums	Medium	63.4%	Array Bit Manipulation+2	Read
2506. Count Pairs Of Similar Strings	Easy	73.7%	Array Bit Manipulation+3	Read
2507. Smallest Value After Replacing With Sum of Prime Factors	Medium	50.4%	Math Number Theory+1	Read
2508. Add Edges to Make Degrees of All Nodes Even	Hard	36.7%	Graph Hash Table	Read
2509. Cycle Length Queries in a Tree	Hard	60.9%	Array Binary Tree+1	Read
2510. Check if There is a Path With Equal Number of 0's And 1's	Medium	51.9%	Array Dynamic Programming+1	Read
2511. Maximum Enemy Forts That Can Be Captured	Easy	41.8%	Array Two Pointers	Read
2512. Reward Top K Students	Medium	47.5%	Array Hash Table+3	Read
2513. Minimize the Maximum of Two Arrays	Medium	32.8%	Binary Search Math+1	Read
2514. Count Anagrams	Hard	38.4%	Combinatorics Counting+3	Read
2515. Shortest Distance to Target String in a Circular Array	Easy	65.1%	Array String	Read
2516. Take K of Each Character From Left and Right	Medium	51.4%	Hash Table Sliding Window+1	Read
2517. Maximum Tastiness of Candy Basket	Medium	68.6%	Array Binary Search+2	Read
2518. Number of Great Partitions	Hard	33.4%	Array Dynamic Programming	Read
2519. Count the Number of K-Big Indices	Hard	53.2%	Array Binary Indexed Tree+5	Read
2520. Count the Digits That Divide a Number	Easy	85.9%	Math	Read
2521. Distinct Prime Factors of Product of Array	Medium	54.9%	Array Hash Table+2	Read
2522. Partition String Into Substrings With Values at Most K	Medium	47.6%	Dynamic Programming Greedy+1	Read
2523. Closest Prime Numbers in Range	Medium	51.7%	Math Number Theory	Read
2524. Maximum Frequency Score of a Subarray	Hard	35.7%	Array Hash Table+3	Read
2525. Categorize Box According to Criteria	Easy	40.7%	Math	Read
2526. Find Consecutive Integers from a Data Stream	Medium	51.5%	Counting Data Stream+3	Read
2527. Find Xor-Beauty of Array	Medium	71.3%	Array Bit Manipulation+1	Read
2528. Maximize the Minimum Powered City	Hard	61.8%	Array Binary Search+4	Read
2529. Maximum Count of Positive Integer and Negative Integer	Easy	74.3%	Array Binary Search+1	Read
2530. Maximal Score After Applying K Operations	Medium	63.7%	Array Greedy+1	Read
2531. Make Number of Distinct Characters Equal	Medium	27.5%	Counting Hash Table+1	Read
2532. Time to Cross a Bridge	Hard	44.4%	Array Heap (Priority Queue)+1	Read
2533. Number of Good Binary Strings	Medium	52.8%	Dynamic Programming	Read
2534. Time Taken to Cross the Door	Hard	50.1%	Array Queue+1	Read
2535. Difference Between Element Sum and Digit Sum of an Array	Easy	85.3%	Array Math	Read
2536. Increment Submatrices by One	Medium	73.8%	Array Matrix+1	Read
2537. Count the Number of Good Subarrays	Medium	65.9%	Array Hash Table+1	Read
2538. Difference Between Maximum and Minimum Price Sum	Hard	34.5%	Array Depth-First Search+2	Read
2539. Count the Number of Good Subsequences	Medium	47.7%	Combinatorics Counting+3	Read
2540. Minimum Common Value	Easy	60.9%	Array Binary Search+2	Read
2541. Minimum Operations to Make Array Equal II	Medium	33.1%	Array Greedy+1	Read
2542. Maximum Subsequence Score	Medium	54.6%	Array Greedy+2	Read
2543. Check if Point Is Reachable	Hard	45.5%	Math Number Theory	Read
2544. Alternating Digit Sum	Easy	69.7%	Math	Read
2545. Sort the Students by Their Kth Score	Medium	86.1%	Array Matrix+1	Read
2546. Apply Bitwise Operations to Make Strings Equal	Medium	42.6%	Bit Manipulation String	Read
2547. Minimum Cost to Split an Array	Hard	44.8%	Array Counting+2	Read
2548. Maximum Price to Fill a Bag	Medium	64.6%	Array Greedy+1	Read
2549. Count Distinct Numbers on Board	Easy	61.7%	Array Hash Table+2	Read
2550. Count Collisions of Monkeys on a Polygon	Medium	30.6%	Math Recursion	Read

#2501Medium

Longest Square Streak in an Array

ArrayBinary SearchDynamic Programming+2

Acceptance: 53.1%

#2502Medium

Design Memory Allocator

ArrayDesignHash Table+1

Acceptance: 50.4%

#2503Hard

Maximum Number of Points From Grid Queries

ArrayBreadth-First SearchHeap (Priority Queue)+4

Acceptance: 59.3%

#2504Easy

Concatenate the Name and the Profession

Database

Acceptance: 77.0%

#2505Medium

Bitwise OR of All Subsequence Sums

ArrayBit ManipulationBrainteaser+1

Acceptance: 63.4%

#2506Easy

Count Pairs Of Similar Strings

ArrayBit ManipulationCounting+2

Acceptance: 73.7%

#2507Medium

Smallest Value After Replacing With Sum of Prime Factors

MathNumber TheorySimulation

Acceptance: 50.4%

#2508Hard

Add Edges to Make Degrees of All Nodes Even

GraphHash Table

Acceptance: 36.7%

#2509Hard

Cycle Length Queries in a Tree

ArrayBinary TreeTree

Acceptance: 60.9%

#2510Medium

Check if There is a Path With Equal Number of 0's And 1's

ArrayDynamic ProgrammingMatrix

Acceptance: 51.9%

#2511Easy

Maximum Enemy Forts That Can Be Captured

ArrayTwo Pointers

Acceptance: 41.8%

#2512Medium

Reward Top K Students

ArrayHash TableHeap (Priority Queue)+2

Acceptance: 47.5%

#2513Medium

Minimize the Maximum of Two Arrays

Binary SearchMathNumber Theory

Acceptance: 32.8%

#2514Hard

Count Anagrams

CombinatoricsCountingHash Table+2

Acceptance: 38.4%

#2515Easy

Shortest Distance to Target String in a Circular Array

ArrayString

Acceptance: 65.1%

#2516Medium

Take K of Each Character From Left and Right

Hash TableSliding WindowString

Acceptance: 51.4%

#2517Medium

Maximum Tastiness of Candy Basket

ArrayBinary SearchGreedy+1

Acceptance: 68.6%

#2518Hard

Number of Great Partitions

ArrayDynamic Programming

Acceptance: 33.4%

#2519Hard

Count the Number of K-Big Indices

ArrayBinary Indexed TreeBinary Search+4

Acceptance: 53.2%

#2520Easy

Count the Digits That Divide a Number

Math

Acceptance: 85.9%

#2521Medium

Distinct Prime Factors of Product of Array

ArrayHash TableMath+1

Acceptance: 54.9%

#2522Medium

Partition String Into Substrings With Values at Most K

Dynamic ProgrammingGreedyString

Acceptance: 47.6%

#2523Medium

Closest Prime Numbers in Range

MathNumber Theory

Acceptance: 51.7%

#2524Hard

Maximum Frequency Score of a Subarray

ArrayHash TableMath+2

Acceptance: 35.7%

#2525Easy

Categorize Box According to Criteria

Math

Acceptance: 40.7%

#2526Medium

Find Consecutive Integers from a Data Stream

CountingData StreamDesign+2

Acceptance: 51.5%

#2527Medium

Find Xor-Beauty of Array

ArrayBit ManipulationMath

Acceptance: 71.3%

#2528Hard

Maximize the Minimum Powered City

ArrayBinary SearchGreedy+3

Acceptance: 61.8%

#2529Easy

Maximum Count of Positive Integer and Negative Integer

ArrayBinary SearchCounting

Acceptance: 74.3%

#2530Medium

Maximal Score After Applying K Operations

ArrayGreedyHeap (Priority Queue)

Acceptance: 63.7%

#2531Medium

Make Number of Distinct Characters Equal

CountingHash TableString

Acceptance: 27.5%

#2532Hard

Time to Cross a Bridge

ArrayHeap (Priority Queue)Simulation

Acceptance: 44.4%

#2533Medium

Number of Good Binary Strings

Dynamic Programming

Acceptance: 52.8%

#2534Hard

Time Taken to Cross the Door

ArrayQueueSimulation

Acceptance: 50.1%

#2535Easy

Difference Between Element Sum and Digit Sum of an Array

ArrayMath

Acceptance: 85.3%

#2536Medium

Increment Submatrices by One

ArrayMatrixPrefix Sum

Acceptance: 73.8%

#2537Medium

Count the Number of Good Subarrays

ArrayHash TableSliding Window

Acceptance: 65.9%

#2538Hard

Difference Between Maximum and Minimum Price Sum

ArrayDepth-First SearchDynamic Programming+1

Acceptance: 34.5%

#2539Medium

Count the Number of Good Subsequences

CombinatoricsCountingHash Table+2

Acceptance: 47.7%

#2540Easy

Minimum Common Value

ArrayBinary SearchHash Table+1

Acceptance: 60.9%

#2541Medium

Minimum Operations to Make Array Equal II

ArrayGreedyMath

Acceptance: 33.1%

#2542Medium

Maximum Subsequence Score

ArrayGreedyHeap (Priority Queue)+1

Acceptance: 54.6%

#2543Hard

Check if Point Is Reachable

MathNumber Theory

Acceptance: 45.5%

#2544Easy

Alternating Digit Sum

Math

Acceptance: 69.7%

#2545Medium

Sort the Students by Their Kth Score

ArrayMatrixSorting

Acceptance: 86.1%

#2546Medium

Apply Bitwise Operations to Make Strings Equal

Bit ManipulationString

Acceptance: 42.6%

#2547Hard

Minimum Cost to Split an Array

ArrayCountingDynamic Programming+1

Acceptance: 44.8%

#2548Medium

Maximum Price to Fill a Bag

ArrayGreedySorting

Acceptance: 64.6%

#2549Easy

Count Distinct Numbers on Board

ArrayHash TableMath+1

Acceptance: 61.7%

#2550Medium

Count Collisions of Monkeys on a Polygon

MathRecursion

Acceptance: 30.6%

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