Skip to main content
Talentd

Solutions & Explanations

Browse 4,029+ detailed solutions with multiple approaches, code in Python, Java, C++ and more.

4,029 Solutions961 Easy2102 Medium966 Hard
All4029Easy961Medium2102Hard966
#1240Hard

Tiling a Rectangle with the Fewest Squares

Backtracking

Acceptance: 55.0%

#1246Hard

Palindrome Removal

ArrayDynamic Programming

Acceptance: 46.4%

#1250Hard

Check If It Is a Good Array

ArrayMathNumber Theory

Acceptance: 65.6%

#1255Hard

Maximum Score Words Formed by Letters

ArrayBacktrackingBit Manipulation+3

Acceptance: 81.9%

#1259Hard

Handshakes That Don't Cross

Dynamic ProgrammingMath

Acceptance: 61.1%

#1263Hard

Minimum Moves to Move a Box to Their Target Location

ArrayBreadth-First SearchHeap (Priority Queue)+1

Acceptance: 49.7%

#1269Hard

Number of Ways to Stay in the Same Place After Some Steps

Dynamic Programming

Acceptance: 50.2%

#1274Hard

Number of Ships in a Rectangle

ArrayDivide and ConquerInteractive

Acceptance: 68.7%

#1278Hard

Palindrome Partitioning III

Dynamic ProgrammingString

Acceptance: 62.2%

#1284Hard

Minimum Number of Flips to Convert Binary Matrix to Zero Matrix

ArrayBit ManipulationBreadth-First Search+2

Acceptance: 72.9%

#1289Hard

Minimum Falling Path Sum II

ArrayDynamic ProgrammingMatrix

Acceptance: 63.2%

#1293Hard

Shortest Path in a Grid with Obstacles Elimination

ArrayBreadth-First SearchMatrix

Acceptance: 46.2%

#1298Hard

Maximum Candies You Can Get from Boxes

ArrayBreadth-First SearchGraph

Acceptance: 67.2%

#1301Hard

Number of Paths with Max Score

ArrayDynamic ProgrammingMatrix

Acceptance: 63.4%

#1307Hard

Verbal Arithmetic Puzzle

ArrayBacktrackingMath+1

Acceptance: 33.5%

#1312Hard

Minimum Insertion Steps to Make a String Palindrome

Dynamic ProgrammingString

Acceptance: 74.3%

#1316Hard

Distinct Echo Substrings

Hash FunctionRolling HashString+1

Acceptance: 53.7%

#1320Hard

Minimum Distance to Type a Word Using Two Fingers

Dynamic ProgrammingString

Acceptance: 72.2%

#1326Hard

Minimum Number of Taps to Open to Water a Garden

ArrayDynamic ProgrammingGreedy

Acceptance: 50.7%

#1330Hard

Reverse Subarray To Maximize Array Value

ArrayGreedyMath

Acceptance: 44.7%

#1335Hard

Minimum Difficulty of a Job Schedule

ArrayDynamic Programming

Acceptance: 59.6%

#1336Hard

Number of Transactions per Visit

Database

Acceptance: 47.7%

#1340Hard

Jump Game V

ArrayDynamic ProgrammingSorting

Acceptance: 75.7%

#1345Hard

Jump Game IV

ArrayBreadth-First SearchHash Table

Acceptance: 50.9%

#1349Hard

Maximum Students Taking Exam

ArrayBit ManipulationBitmask+2

Acceptance: 54.8%

#1354Hard

Construct Target Array With Multiple Sums

ArrayHeap (Priority Queue)

Acceptance: 36.8%

#1359Hard

Count All Valid Pickup and Delivery Options

CombinatoricsDynamic ProgrammingMath

Acceptance: 64.9%

#1363Hard

Largest Multiple of Three

ArrayDynamic ProgrammingGreedy

Acceptance: 33.2%

#1368Hard

Minimum Cost to Make at Least One Valid Path in a Grid

ArrayBreadth-First SearchGraph+3

Acceptance: 70.9%

#1369Hard

Get the Second Most Recent Activity

Database

Acceptance: 67.5%

#1373Hard

Maximum Sum BST in Binary Tree

Binary Search TreeBinary TreeDepth-First Search+2

Acceptance: 48.9%

#1377Hard

Frog Position After T Seconds

Breadth-First SearchDepth-First SearchGraph+1

Acceptance: 38.8%

#1383Hard

Maximum Performance of a Team

ArrayGreedyHeap (Priority Queue)+1

Acceptance: 47.6%

#1384Hard

Total Sales Amount by Year

Database

Acceptance: 61.0%

#1388Hard

Pizza With 3n Slices

ArrayDynamic ProgrammingGreedy+1

Acceptance: 54.4%

#1392Hard

Longest Happy Prefix

Hash FunctionRolling HashString+1

Acceptance: 53.5%

#1397Hard

Find All Good Strings

Dynamic ProgrammingStringString Matching

Acceptance: 45.8%

#1402Hard

Reducing Dishes

ArrayDynamic ProgrammingGreedy+1

Acceptance: 76.8%

#1406Hard

Stone Game III

ArrayDynamic ProgrammingGame Theory+1

Acceptance: 68.0%

#1411Hard

Number of Ways to Paint N × 3 Grid

Dynamic Programming

Acceptance: 80.6%

#1412Hard

Find the Quiet Students in All Exams

Database

Acceptance: 58.7%

#1416Hard

Restore The Array

Dynamic ProgrammingString

Acceptance: 47.2%

#1420Hard

Build Array Where You Can Find The Maximum Exactly K Comparisons

Dynamic ProgrammingPrefix Sum

Acceptance: 65.3%

#1425Hard

Constrained Subsequence Sum

ArrayDynamic ProgrammingHeap (Priority Queue)+3

Acceptance: 56.5%

#1434Hard

Number of Ways to Wear Different Hats to Each Other

ArrayBit ManipulationBitmask+1

Acceptance: 46.4%

#1439Hard

Find the Kth Smallest Sum of a Matrix With Sorted Rows

ArrayBinary SearchHeap (Priority Queue)+1

Acceptance: 62.0%

#1444Hard

Number of Ways of Cutting a Pizza

ArrayDynamic ProgrammingMatrix+1

Acceptance: 61.8%

#1449Hard

Form Largest Integer With Digits That Add up to Target

ArrayDynamic Programming

Acceptance: 49.6%

#1453Hard

Maximum Number of Darts Inside of a Circular Dartboard

ArrayGeometryMath

Acceptance: 41.2%

#1458Hard

Max Dot Product of Two Subsequences

ArrayDynamic Programming

Acceptance: 69.4%

Page 6 of 20

Master DSA with Step-by-Step Solutions

Each solution article on FleetCode breaks down the problem into multiple approaches, from brute force to optimal, with detailed explanations and code in Python, Java, C++ and more. Understanding why an approach works - not just copying code - is what separates candidates who clear interviews from those who don't.

How to Use These Solutions

  • Try the problem first: Spend at least 20 minutes before reading the solution
  • Read all approaches: Start from brute force to understand the problem fully, then study the optimized solution
  • Understand the complexity: Pay attention to time and space analysis for each approach
  • Code it yourself: After understanding the approach, close the solution and implement from memory
  • Revisit after a week: Spaced repetition helps retain problem-solving patterns