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Master Wiggle Sort II (LeetCode 324): 3-Way Partition & Virtual Indexing | Day 6 of 180

October 25, 2026October 25, 2026 by Lingineni Sabareesh

Follow our YouTube Channels:Trendy VS Vlogs: https://youtube.com/@trendyvsvlogs?si=Xd3L31p5zPXggomYWhatsApp Channel: https://whatsapp.com/channel/0029Vb9H4vC545v2HaoKk735 2. Pattern Recognition: Why Dutch National Flag Again? On Day 5, we solved Sort Colors by partitioning fixed values 0, 1, 2. In Wiggle Sort II: If we partition around the median element: This is the exact Dutch National Flag (3-Way Partition) pattern! The only change … Read more

Master the Two-Pointer Technique: LeetCode 167 (Two Sum II) Explained | Day 1 of 180

October 24, 2026 by Lingineni Sabareesh

Plaintext 2. Pattern Recognition: Why Two Pointers? In technical interviews, use this 30-second checklist to spot when the Opposite-Direction Two-Pointer technique applies: 3. Algorithmic Approaches Approach 1: Brute Force (Suboptimal) Approach 2: Binary Search (Suboptimal) Approach 3: Optimal Two Pointers (The MNC Standard) Plaintext 4. Production-Ready Code Implementations Java Solution Java Python 3 Solution Python … Read more

Master Wiggle Sort II (LeetCode 324): 3-Way Partition & Virtual Indexing | Day 6 of 180

Master the Two-Pointer Technique: LeetCode 167 (Two Sum II) Explained | Day 1 of 180

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