[Quick Idea] Number of Islands

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Describe the idea https://leetcode.com/problems/number-of-islands/description/

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Link - https://blog.seancoughlin.me/mastering-leetcode-counting-the-number-of-islands-in-a-2d-binary-grid Write - db1e390dca965f605504e7fbc43c6149628d6bce Categorize - e20fe560bc38a53454db0aeeba1de19ec3b6d24f