以下实例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
以上代码运行输出结果为:
Penny dime ----------- nickel Quarter