如何通过它的组件进行排序String数组？ Java的 [英] How to sort String array by its component? Java

问题描述

Date,Lat,Lon,Depth,Mag
20000101,34.6920,-116.3550,12.30,1.21
20000101,34.4420,-116.2280,7.32,1.01
20000101,37.4172,-121.7667,5.88,1.14
20000101,-41.1300,174.7600,27.00,1.90
20000101,37.6392,-119.0482,2.40,1.03
20000101,32.1790,-115.0730,6.00,2.44
20000101,59.7753,-152.2192,86.34,1.48
20000101,34.5230,-116.2410,11.63,1.61
20000101,59.5369,-153.1360,100.15,1.62
20000101,44.7357,-110.7932,4.96,2.20
20000101,34.6320,-116.2950,9.00,1.73

我需要每个标准对这些数据进行排序

I need to sort these data by each criterion

我试过 Double.parseDouble（数组[0] .split（）。[1]），但使用的选择需要太多的时间排序

I tried Double.parseDouble(array[0].split(",").[1]) but takes too much time using Selection Sort

有什么办法，只是有点不使用parseDouble？

Is there any way to just sort by not using parseDouble?

推荐答案

您有您希望通过PTED为Double某子间$ P $排序字符串，所以没办法解决它们解析。但是，如果你分析每一行一次，并保存这些结果进行排序，这将是比每个比较中调用parseDouble更快。

You have strings that you want to sort by a certain substring interpreted as a Double, so no way around parsing them. But if you parse each line once, and save those results to sort on, that will be faster than calling parseDouble within each comparison.

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