Question

JAVA 通过字符串的split方法,按照空格拆分字符串,之后按首字母排序

例John Bill Peter
按升序输出Bill John Peter

Answer 1

public static void main(String args[])
{
String target="John Bill Peter ";

ArrayList<String> list=new ArrayList<String>();
for(String temp:target.split(" "))
{
list.add(temp);
}

Collections.sort(list);

for(String temp:list)
{
System.out.print(temp+" ");
}

}

追问

那如何实现倒序呢？
输出Peter John Bill

追答

public static void main(String args[])
{
String target="John Bill Peter ";

ArrayList list=new ArrayList();
for(String temp:target.split(" "))
{
list.add(temp);
}

Collections.sort(list);

for(String temp:list)
{
System.out.print(temp+" ");
}

System.out.println();

Collections.reverse(list);

for(String temp:list)
{
System.out.print(temp+" ");
}
}