Leetcode patterns you should definitely checkout to Learn DSA(Java) from scratch 1️⃣ Arrays: Data structures, such as arrays, store elements in contiguous memory locations. They are versatile and useful for a wide variety of purposes. LeetCode Problems: • Search in Rotated Sorted Array (Problem #33) • Product of Array Except Self (Problem #238) • Find the Missing Number (Problem #268) 2️⃣Two Pointers: In Two Pointers, two pointers are maintained in the collection and can be manipulated to solve a problem efficiently. LeetCode problems: • Trapping Rain Water (Problem #42) • Longest Substring Without Repeating Characters (Problem #3) • Squares of a Sorted Array (Problem #977) 3️⃣In-place Linked List Traversal: As an explanation, in-place traversal is a technique for modifying linked list nodes without using extra space. LeetCode Problems: • Remove Nth Node From End of List (Problem #19) • Reorder List (Problem #143) 4️⃣Fast & Slow Pointers: This pattern uses two pointers to traverse a sequence at different speeds (fast and slow), often used to detect cycles or find a specific position in the sequence. LeetCode Problems: • Happy Number (Problem #202) • Subarray Sum Equals K (Problem #560) • Intersection of Two Linked Lists (Problem #160) 5️⃣Merge Intervals: This pattern involves merging overlapping intervals in a collection, often used in problems dealing with intervals or ranges. LeetCode problems: • Non-overlapping Intervals (Problem #435) • Minimum Number of Arrows to Burst Balloons (Problem #452) Join for more: https://t.me/crackingthecodinginterview DSA Interview Preparation Resources: https://topmate.io/coding/886874 ENJOY LEARNING 👍👍