Java通过字符子串对字符串数组进行排序

Question

我需要通过字符子串对字符串数组进行排序,如下所示:

[0] = "gtrd3455";
[1] = "wsft885";
[2] = "ltzy96545";
[3] = "scry5558";
[4] = "lopa475";

我需要按照以下"3455,885,96545,5558,475"进行排序我需要对数组的前4个字符进行子串,对其进行排序并在数组中显示,如下面的输出.

输出应该是一个数组,如:

[0] = "ltzy96545";
[1] = "scry5558";
[2] = "gtrd3455";
[3] = "wsft885";
[4] = "lopa475";

我如何在Java中执行此操作的示例？

Answer 1

你可以使用a Comparator和use Array#sort方法根据你的需要对它进行排序: -

String[] yourArray = new String[3];
yourArray[0] = "gtrd3455";
yourArray[1] = "ltzy96545";
yourArray[2] = "lopa475";

Arrays.sort(yourArray, new Comparator<String>() {
    public int compare(String str1, String str2) {
        String substr1 = str1.substring(4);
        String substr2 = str2.substring(4);

        return Integer.valueOf(substr2).compareTo(Integer.valueOf(substr1));
    }
});

System.out.println(Arrays.toString(yourArray));

输出: -

[ltzy96545, gtrd3455, lopa475]