[题目地址](https://leetcode.cn/problems/maximum-distance-in-arrays) ```golang func maxDistance(arrays [][]int) int { mn,mx,ans := math.MaxInt/2, math.MinInt/2,0 for _, itemArr := range arrays{ x,y := itemArr[0], itemArr[len(itemArr)-1] ans = max(ans, y-mn,mx-x) mx = max(mx, y) mn = min(mn, x) } return ans } ```