Java 实例 - 集合比较
Java 教程
· 2019-02-11 15:28:05
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：
Main.java 文件
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<String> set = new TreeSet<String>();
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));
}
}
以上代码运行输出结果为：
Penny dime ----------- nickel Quarter
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Jimmy Lin、Chris Dyer / Morgan and Claypool Publishers / 2010-4-30 / USD 40.00
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