Java软贱攻城狮

范例：import java.util.Arrays;class Book implements Comparable<Book> { private String title; private double price; public Book(String title, double price) { this.title = title; this.price...

·如果在不能修改Book类定义的情况下是不可能使用Comparable接口的，为此Java提供了另一个比较器java.util.Comparator接口下两个方法:public interface Comparator<T> { public int compare(T o1, T o2); public boolean equals(Object obj);}示例:·真正有用...

Arrays类里面存有二分查找法：public static int binarySearch（数据类型[ ]a，数据类型 key）进行二分查找之前必须先排序后查找范例1：import java.util.Arrays;public class Demo { public static void main(String[] args) { int[] data = new int[] {...

范例：使用比较器import java.util.Arrays;class Book implements Comparable<Book> { private String title; private double price; public Book(String title, double price) { this.title = title; this....