Package g0501_0600.s0587_erect_the_fence

Class Solution

java.lang.Object

g0501_0600.s0587_erect_the_fence.Solution

public class Solution
extends Object

587 - Erect the Fence.

Hard

You are given an array trees where trees[i] = [xi, yi] represents the location of a tree in the garden.

You are asked to fence the entire garden using the minimum length of rope as it is expensive. The garden is well fenced only if all the trees are enclosed.

Return the coordinates of trees that are exactly located on the fence perimeter.

Example 1:

Input: points = [[1,1],[2,2],[2,0],[2,4],[3,3],[4,2]]

Output: [[1,1],[2,0],[3,3],[2,4],[4,2]]

Example 2:

Input: points = [[1,2],[2,2],[4,2]]

Output: [[4,2],[2,2],[1,2]]

Constraints:

• 1 <= points.length <= 3000
• points[i].length == 2
• 0 <= xi, yi <= 100
• All the given points are unique.

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int[][]	outerTrees(int[][] trees)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

outerTrees

public int[][] outerTrees(int[][] trees)