Minimum Time Visiting All Points

On a plane there are n points with integer coordinates points[i] = [xi, yi]. Your task is to find the minimum time in seconds to visit all points.

You can move according to the next rules:

 

Example 1:

Input: points = [[1,1],[3,4],[-1,0]]
Output: 7
Explanation: One optimal path is [1,1] -> [2,2] -> [3,3] -> [3,4] -> [2,3] -> [1,2] -> [0,1] -> [-1,0]   
Time from [1,1] to [3,4] = 3 seconds 
Time from [3,4] to [-1,0] = 4 seconds
Total time = 7 seconds
Example 2:

Input: points = [[3,2],[-2,2]]
Output: 5

 

Constraints:


Solution:

class Solution {
    public int minTimeToVisitAllPoints(int[][] points) {
        int time = 0;
        int[] prev = points[0];
        for (int i = 1; i < points.length; i ++) {
            int[] curr = points[i];
            time += Math.max(Math.abs(curr[0] - prev[0]), Math.abs(curr[1] - prev[1]));
            prev = curr;
        }
        return time;
    }
}