用Java对字符串数组进行排序（特殊方式）

Question

I have a problem doing this since I need to sort it in this way:

Before:

{aAbB, abBA, AaBb}

After:

{AaBb, aAbB, abBA}

The idea is sorting a uppercase letter right before it's lowercase version, and that with every letter. I'm actually using a Collator for Spanish (problems with the 'ñ') and set it's strength to PRIMARY so I can compare if two words are equal not having care of capital letters.

Answer 1

Just do:

private static Comparator<String> ALPHABETICAL_ORDER = new Comparator<String>() {
    public int compare(String str1, String str2) {
        int res = String.CASE_INSENSITIVE_ORDER.compare(str1, str2);
        if (res == 0) {
            res = (str1.compareTo(str2)==0) ? 1 : 0;
        }
        return res;
    }
};

Collections.sort(list, ALPHABETICAL_ORDER);

Inspired from: Simple way to sort strings in the (case sensitive) alphabetical order

Answer 2

这将产生所需的结果。

Arrays.sort(stringArray)