Leetcode Problem 2123. Minimum Operations to Remove Adjacent Ones in Matrix

2123. Minimum Operations to Remove Adjacent Ones in Matrix

Leetcode Solutions

Maximum Bipartite Matching using Hungarian Algorithm

  1. Create two disjoint sets of nodes based on their position in the grid.
  2. For each '1' in the grid, add edges to all 4-directionally adjacent '1's.
  3. Apply the Hungarian algorithm to find the maximum matching in the bipartite graph.
  4. The number of operations required to make the grid well-isolated is equal to the number of '1's minus the size of the maximum matching.
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DFS-based Greedy Approach

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