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Today we will be solving a medium level good problem based on Arrays - Number of Zero-Filled Subarrays | 2 Approaches | Leetcode 2348 | Meta | codestorywithMIK

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Problem Name : Number of Zero-Filled Subarrays | 2 Approaches | Leetcode 2348 | Meta | codestorywithMIK
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Video Summary :
Approach-1 (Math formula on zero blocks):
We scan the array and whenever we find a block of consecutive zeros, we calculate the number of subarrays it can form using the formula k * (k+1) / 2. This works because every new zero extends all previous zero subarrays plus forms new ones.

Approach-2 (Incremental counting):
We maintain a running counter of consecutive zeros. Each time we see a zero, we increase the counter and add it to the result; when we see a non-zero, we reset. This leverages the observation that each zero extends all previous zero subarrays ending at that index.


✨ Timelines✨
00:00 - Introduction
0:32 - Problem Explanation
1:25 - Approach 1
3:50 - Coding Approach 1
6:09 - Approach 2
13:45 - One more Dry Run
15:21 - Coding Approach 2

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