Java 范例 - 集合比较
将字符串转换为集合并使用 Collection 类的 Collection.min() 和 Collection.max() 来比较集合中的元素
import java.util.Collections; import java.util.Set; import java.util.TreeSet; class Main { public static void main(String[] args) { String[] coins = { "Penny", "nickel", "dime", "Quarter", "dollar" }; Set set = new TreeSet(); for (int i = 0; i < coins.length; i++) set.add(coins[i]); System.out.println(Collections.min(set)); System.out.println(Collections.min(set, String.CASE_INSENSITIVE_ORDER)); for(int i=0;i<=10;i++) System.out.print("-"); System.out.println(""); System.out.println(Collections.max(set)); System.out.println(Collections.max(set, String.CASE_INSENSITIVE_ORDER)); } }
编译运行以上 Java 代码，输出结果如下
Penny dime ----------- nickel Quarter