Leetcode Problem 2249. Count Lattice Points Inside a Circle

2249. Count Lattice Points Inside a Circle

Leetcode Solutions

Iterative Set-Based Approach

  1. Initialize an empty set to store unique lattice points.
  2. Iterate over each circle in the input list.
  3. For each circle, calculate the bounding box of lattice points that could potentially be inside the circle.
  4. Iterate over each lattice point within the bounding box.
  5. Use the distance formula to check if the lattice point is inside the circle.
  6. If the point is inside, add it to the set.
  7. After processing all circles, return the size of the set as the answer.
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Brute Force Search with Optimization

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