#354 · #735 · Asteroid Collision(小行星碰撞)

We are given an array asteroids of integers representing asteroids in a row. The absolute value is the size and the sign is the direction (positive = right, negative = left). When two asteroids collide, the smaller explodes; equal sizes both explode. Asteroids moving in the same direction never collide. Return the state after all collisions. Constraints: 2 <= asteroids.length <= 10^4, -1000 <= asteroids[i] <= 1000, no zero values.