Learn to build dynamic sliding window and two-pointer solutions for real-world coding problems and technical interviews.
Sub Category
- Mobile Development
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Objectives
- Analyze and apply adaptive sliding window techniques to solve dynamic subarray and substring problems efficiently.
- Identify when to use fixed-size versus adaptive sliding window patterns in coding challenges.
- Construct algorithms using two-pointer strategies that don’t rely on traditional window structures.
- Solve problems involving longest or shortest subarrays that meet complex conditions (e.g. sum ≥ target, exactly K distinct values).
- Use frequency maps and hash-based counters to manage dynamic constraints within a moving window.
- Implement in-place array and string manipulation using pointer movement and condition tracking.
- Debug and visualize adaptive window logic using print tracing and incremental analysis.
- Apply prefix sum and cumulative frequency techniques to count or optimize subarray conditions.
- Build reusable templates for window-shrinking problems involving constraints like duplicates or target counts.
- Prepare for technical interviews with confidence by mastering advanced pointer and loop control patterns.
Pre Requisites
- Basic understanding of variables, loops, and conditionals in any programming language.
- Familiarity with Swift (or another modern language) and how functions, arrays, and dictionaries work.
- Comfort with writing and running simple algorithms in an IDE or code editor.
- Basic problem-solving experience on platforms like LeetCode, HackerRank, or CodeSignal.
- Understanding of arrays, strings, and hash maps as data structures.
- Ability to trace code using print statements or a debugger to follow variable states.
- Familiarity with the sliding window pattern at a basic, fixed-size level.
- Some exposure to two-pointer techniques, even if not fully mastered.
- Experience reading or implementing simple algorithms with time and space complexity in mind.
- Willingness to break down problems into smaller parts and iterate on a solution.
FAQ
- Q. How long do I have access to the course materials?
- A. You can view and review the lecture materials indefinitely, like an on-demand channel.
- Q. Can I take my courses with me wherever I go?
- A. Definitely! If you have an internet connection, courses on Udemy are available on any device at any time. If you don't have an internet connection, some instructors also let their students download course lectures. That's up to the instructor though, so make sure you get on their good side!
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