735. 行星碰撞

from typing import List


class Solution:
    def asteroidCollision(self, asteroids: List[int]) -> List[int]:
        while True:
            for i in range(1, len(asteroids)):
                if asteroids[i - 1] > 0 > asteroids[i]:
                    if asteroids[i - 1] + asteroids[i] == 0:
                        asteroids.pop(i)
                        asteroids.pop(i - 1)
                    elif asteroids[i - 1] + asteroids[i] < 0:
                        asteroids.pop(i - 1)
                    elif asteroids[i - 1] + asteroids[i] > 0:
                        asteroids.pop(i)
                    break
            else:
                return asteroids