题目：

题解：

func findMinArrowShots(points [][]int) int {if len(points) == 0 {return 0}sort.Slice(points, func(i, j int) bool { return points[i][1] < points[j][1] })maxRight := points[0][1]ans := 1for _, p := range points {if p[0] > maxRight {maxRight = p[1]ans++}}return ans
}