Welcome to the Interview Preparation section. This covers essential problem-solving patterns, JavaScript fundamentals, and coding techniques that dominate technical interviews.

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Step	Topic	What You’ll Learn
1	JavaScript Array Methods	map, filter, reduce, and all key array methods
2	Map & Set Patterns	Frequency counters, hash maps, uniqueness checks
3	Two Pointer Technique	Reverse, pair sum, palindrome with two pointers
4	Sliding Window	Fixed and variable window patterns
5	Frequency Counter	Counting patterns, anagrams, duplicates
6	Recursion & Backtracking	Recursive patterns for interview problems
7	Must-Practice Problems	Hand-picked coding problems with solutions
8	Pro Interview Tips	Tips, strategy, and best practices
9	Study Plan & Next Topics	Learning roadmap and recommended resources

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Pattern	When to Use	Key Data Structure
Frequency Counter	Counting, duplicates, anagrams	Map / Object
Two Pointer	Sorted arrays, palindromes	Array indexes
Sliding Window	Subarrays, substrings	Queue-like window
Hash Map	Lookup, pair problems	Map / Object
Set	Uniqueness, membership	Set

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Start with JavaScript Array Methods →