22 hours ago · When starting with the Two Pointer technique, one of the simplest and most important problems is reversing an array without using extra space. Today I talked why we use 2-Pointer Algorithm! Why do we need them when we have arrays? And I also discussed Dec 9, 2025 · The ultimate comprehensive guide to two pointers. Would be grateful for your ideas Many linked list problems can be solved with the two-pointer technique. It involves initializing two pointers, comparing their sum to the The Find the Middle of a Linked List problem is a classic example of how the Slow and Fast Pointer technique simplifies linked list traversal. io/Code solutions in Python, Java, C++ and JS for this can be found at my GitHub repo here: h Jun 25, 2024 · There are many Leetcode problems you can solve with two pointer technique and its variations. 29K subscribers Subscribe This is where the Two Pointers technique shines — it allows you to solve many of these problems in O (n) or O (n log n) time. Learn the two pointers pattern with step-by-step examples, code templates, and LeetCode practice problems. Whether it is searching, manipulation, optimization, or comparison, the two-pointer approach excels in various problem-solving scenarios. Your old 30DaysCoding purchases are accessible via the dashboard link above. This strategy can be a bit of a head-scratcher for many, leading to frustration and confusion.

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