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Solution: Minimize Max Distance to Gas Station

Understand how to place additional gas stations to minimize the largest gap between adjacent stations by using a binary search approach. This lesson guides you through applying a modified binary search over real numbers and calculating the number of stations required to ensure the maximum distance is as small as possible with high precision.

Statement

You are given an integer array, stations, representing the positions of existing gas stations along the x-axis. You are also given an integer k, indicating the number of additional gas stations you must add. These new gas stations can be placed at any position along the x-axis, including non-integer locations.

A penalty is the maximum distance between two adjacent gas stations after placing the k new stations. Your task is to return the smallest possible value of this penalty. An answer is correct if it is within 10610^{-6} of the actual answer.

Constraints:

  • 1010 ...