我需要一种功能(用任何语言,最好用文字),能够使用一系列带有纬度/长度坐标的物体(例如单体代码),并返回最小的子体,即原阵列的所有成分在X(即20天)英里之内,至少是次点的1个成员。
这里是使你开始的贪.算法。
- Start with an empty result set R and let S be the set of all zipcodes.
- For each zipcode Zn in S, calculate the set Vn of zipcodes which are within 20 miles of Zn.
- Find the set Vmax with the most elements - Add the corresponding zipcode Zmax into the result set R, and remove all the elements of Vmax from S.
- With the remaining elements in S, repeat from step 2 until S is empty. Then the final set is R.
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