64. Number of Islands Disjoint Set Union-Find
Sliding WindowQueue
### Problem #64: Number of Islands Disjoint Set Union-Find
**Domain:** `DSA` | **Topic Focus:** `Sliding Window, Queue`
Implement an optimized, production-grade solution for **Number of Islands Disjoint Set Union-Find**.
### Requirements:
1. Your code must handle boundary inputs, edge cases, and maintain optimal time & space complexity.
2. In production, this logic scales to high-throughput environments.
3. Return the exact computed result.
Example 1:
Input: Sample Input #64
Output: Output 1
Explanation: Demonstrates correct execution for Sliding Window in DSA.
Constraints:
- Time Complexity: Optimal for standard production loads.
- Space Complexity: O(1) auxiliary or O(N) linear storage.
- Ensure memory safety, clean error propagation, and zero race conditions.