Greedy Bit Manipulation | Construct the Minimum Bitwise Array II | LeetCode 3315

In this video, we solve LeetCode 3315. Construct the Minimum Bitwise Array II using a pure bit manipulation observation. The key idea is to understand how to construct the smallest possible number such that: • the bitwise condition with the given number is satisfied • and the resulting value is minimized Instead of trying all possibilities, we analyze the binary representation of the number: • We look for the lowest zero bit • Flip the previous bit to reduce the value while keeping the constraint valid • Handle edge cases (like when the number is 2) explicitly This turns the problem into a almost constant-time operation per number, making the solution extremely efficient. This problem is part of today’s LeetCode Daily Problem of the Day (POTD). 🔹 What you’ll learn: • How to reason about binary representations • Why the first zero bit is the key insight • How to minimize values using controlled bit flips • Handling edge cases in bit manipulation problems 🔹 Topics: • Bit Manipulation • Binary Representation • Greedy Observation Clear problem explanation, intuition-first walkthrough, and clean Java implementation. Problem link - https://leetcode.com/problems/construct-the-minimum-bitwise-array-ii/description/ Java Code - https://pastebin.com/maDe5sL1 Python Code - https://pastebin.com/quAnKG59 Time complexity - O(N*log(nums)) Space Complexity - O(N) Page Marker Extension - https://chromewebstore.google.com/detail/jfiihjeimjpkpoaekpdpllpaeichkiod?utm_source=item-share-cb Video Chapters - 00:00 - Problem Statement 05:18 - Approach 17:11 - Code 25:20 - Time and Space Complexity Leetcode daily playlist - https://www.youtube.com/playlist?list=PLbu0kMppP5Xkx7ckXaf9ZG__SvV2mTz0F LeetCode Easy POTD playlist - https://www.youtube.com/playlist?list=PLbu0kMppP5Xn_e4loHkUol--ae10BH1UB LeetCode Medium POTD playlist - https://www.youtube.com/playlist?list=PLbu0kMppP5Xk6ys1wuSZ4GWKl2RKJ8G_G LeetCode Hard POTD playlist - https://www.youtube.com/playlist?list=PLbu0kMppP5Xkqu5JacpMXYzxyptn7FnzT If you want to practice daily and improve your problem-solving skills, this is the place to follow along. #leetcode #dsa #bitwise #greedy #bitmanipulation #leetcodeproblemoftheday #algorithm #java #python #code #leetcodechallenge #codinginterview #problemsolving