Binary search

Understanding the Binary Search Algorithm

Binary search works by repeatedly dividing the search interval in half. It follows these steps:

  1. Initialize two pointers: start at the beginning of the array and end at the last index.
  2. Compute the middle index mid = start + (end - start) / 2.
  3. Compare the middle element with the target:
  • If arr[mid] equals the target, return mid.
  • If arr[mid] is greater than the target, search in the left half (end = mid - 1).
  • If arr[mid] is smaller than the target, search in the right half (start = mid + 1).

4. Repeat until start exceeds end, meaning the target is not in the array.

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