Solutions & Explanations
Browse 4,029+ detailed solutions with multiple approaches, code in Python, Java, C++ and more.
Largest Positive Integer That Exists With Its Negative
Acceptance: 74.9%
Determine if Two Events Have Conflict
Acceptance: 53.1%
Odd String Difference
Acceptance: 61.9%
Average Value of Even Numbers That Are Divisible by Three
Acceptance: 63.6%
Apply Operations to an Array
Acceptance: 74.7%
Number of Distinct Averages
Acceptance: 58.9%
Convert the Temperature
Acceptance: 90.4%
Number of Unequal Triplets in Array
Acceptance: 73.3%
Form a Chemical Bond
Acceptance: 77.0%
Minimum Cuts to Divide a Circle
Acceptance: 56.7%
Find the Pivot Integer
Acceptance: 83.8%
Circular Sentence
Acceptance: 70.2%
Maximum Value of a String in an Array
Acceptance: 74.2%
Delete Greatest Value in Each Row
Acceptance: 80.5%
Concatenate the Name and the Profession
Acceptance: 77.0%
Count Pairs Of Similar Strings
Acceptance: 73.7%
Maximum Enemy Forts That Can Be Captured
Acceptance: 41.8%
Shortest Distance to Target String in a Circular Array
Acceptance: 65.1%
Count the Digits That Divide a Number
Acceptance: 85.9%
Categorize Box According to Criteria
Acceptance: 40.7%
Maximum Count of Positive Integer and Negative Integer
Acceptance: 74.3%
Difference Between Element Sum and Digit Sum of an Array
Acceptance: 85.3%
Minimum Common Value
Acceptance: 60.9%
Alternating Digit Sum
Acceptance: 69.7%
Count Distinct Numbers on Board
Acceptance: 61.7%
Separate the Digits in an Array
Acceptance: 85.7%
Take Gifts From the Richest Pile
Acceptance: 75.5%
Find the Array Concatenation Value
Acceptance: 71.9%
Maximum Difference by Remapping a Digit
Acceptance: 75.5%
Merge Two 2D Arrays by Summing Values
Acceptance: 81.7%
Left and Right Sum Differences
Acceptance: 89.5%
Split With Minimum Sum
Acceptance: 73.4%
Pass the Pillow
Acceptance: 56.8%
Count the Number of Vowel Strings in Range
Acceptance: 74.3%
Distribute Money to Maximum Children
Acceptance: 20.5%
Number of Even and Odd Bits
Acceptance: 73.4%
K Items With the Maximum Sum
Acceptance: 60.2%
Form Smallest Number From Two Digit Arrays
Acceptance: 55.1%
Find the Longest Balanced Substring of a Binary String
Acceptance: 46.6%
Prime In Diagonal
Acceptance: 39.0%
Array Prototype Last
Acceptance: 74.0%
Counter
Acceptance: 81.6%
Sleep
Acceptance: 87.3%
Array Reduce Transformation
Acceptance: 85.1%
Function Composition
Acceptance: 86.7%
Filter Elements from Array
Acceptance: 85.1%
Apply Transform Over Each Element in Array
Acceptance: 86.0%
Find the Width of Columns of a Grid
Acceptance: 71.0%
Row With Maximum Ones
Acceptance: 74.2%
Find the Maximum Divisibility Score
Acceptance: 52.3%
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