Leetcode Problem 1722. Minimize Hamming Distance After Swap Operations

1722. Minimize Hamming Distance After Swap Operations

Leetcode Solutions

Union-Find to Identify Swappable Components

  1. Initialize a Union-Find data structure with each node being its own parent.
  2. Iterate over allowedSwaps and perform union operations to connect indices.
  3. After processing all swaps, each connected component will have a representative (root).
  4. Create a mapping from each component's root to the frequency count of elements in source and target.
  5. For each component, compare the frequency counts and calculate the number of elements that cannot be matched within the component.
  6. Sum up the counts of unmatched elements across all components to get the minimum Hamming distance.
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Brute Force with Sorting and Swapping

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