Grokking Coding Mock Interview
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Solution: Making A Large Island
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Problem Statement

Given a 2D binary matrix of size n x n, return the integer representing the size of the largest island after changing at most 0 to 1.

Here, Island is defined as a 4-directionally connected group of 1s.

Examples

  • Example 1:
    • Input: 
      [[1, 0, 1, 0],
 [0, 1, 1, 0],
 [0, 0, 0, 1],
 [1, 1, 0, 0]]
    • Expected Output: 6

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