Leetcode 1675 Solution

This article provides solution to leetcode question 1675 (magnetic-force-between-two-balls)
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https://leetcode.com/problems/magnetic-force-between-two-balls

Solution

class Solution:
    def maxDistance(self, position: List[int], m: int) -> int:
        position.sort()

        def isfit(force):
            nonlocal position
            nonlocal m

            last_ball_pos = position[0]
            c = 1

            for i in range(1, len(position)):
                if position[i] < last_ball_pos + force:
                    continue

                last_ball_pos = position[i]
                c += 1
            return c >= m

        l = 1
        r = position[-1] - position[0]

        while l < r:
            force = (l + r + 1) // 2
            if not isfit(force):
                r = force - 1
            else:
                l = force

        return l