Java 数组 字符串

Question

我是java新手，最近编写了一个程序，对字符串数组进行排序 导入java.util.Scanner;

 public class 

Answer 1

您仍然可以使用 Arrays.sort方法，只需提供自己定制的 Comparator :

Arrays.sort(name,
    (String left, String right) ->
        left.substring(1).compareTo(right.substring(1))
);

如果您想自己实现此功能，请注意，如果参数相等，则比较器应返回 0；如果左侧较低，则返回负数；如果右侧较低，则比较器应返回正数。因此，比较器逐个字符将如下所示:

Arrays.sort(name,
    (String left, String right) -> {
        // starting from index 1 and going until reaching end of strings
        for (int i = 1; i < left.length() && i < right.length(); ++i) {
            int diff = left.charAt(i)-right.charAt(i);
            if (diff != 0)
                return diff;
        }
        // if strings are equal so far, return that the lower is the shorter one
        return left.length()-right.length();
    }
);