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two-pointer technique
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Articles about two-pointer technique
- Article · Java
Mastering "Triplets with Sum in Range": An Efficient Java Approach
Learn how to solve the "Triplets with Sum in Range" problem in Java with an optimal $O(n^2)$ time complexity and $O(1)$ auxiliary space using sorting and the two-pointer technique.
- Article · Java
Pairs with Less Than K Difference – Java Solution Explained
Learn to efficiently count pairs with a difference less than k in an array using Java. This optimized solution leverages sorting and the two-pointer technique for O(n log n) time complexity.
- Article · Python
How to Check If a String is a Palindrome or Not using Python
Explore various Python methods for palindrome detection, from simple reversal to the efficient two-pointer technique. Learn how palindrome checks enhance security in real-world applications like random password generators by preventing weak, easily guessable passwords. Understand time/space complexity and best practices for optimal performance. Includes complete implementation with test cases and a focus on security considerations.
- Article · Data Structures and Algorithms (DSA)
🔄 Reverse a String Without Using Extra Space
Master the art of reversing a string in-place, a fundamental Data Structures and Algorithms (DSA) interview question! This article provides a step-by-step approach using the efficient two-pointer technique. Learn how to optimize memory usage with an O(1) space complexity solution. Includes a C# implementation, dry run example, and key takeaways to ace your next coding challenge.
