public class Demo implements Comparable{
//String str;
String str;
/*public Demo(){
}*/
public Demo(String str){
this.str=str;
}
public void getStr(String str){
this.str=str;
}
public String setStr(){
return str;
}
//重写toString()方法
public String toString(){
return " "+this.str;
}
//比较规则
public int compareTo(Object arg0) {
return 1;
}
}
public class SortByNum implements Comparator{
public int compare(Object arg0, Object arg1) {
Demo d1=(Demo)arg0;
Demo d2=(Demo)arg1;
int temp = 0;
String str1=d1.toString();//转换成字符串
String str2=d2.toString();//转换成字符串
char[] ch1=str1.toCharArray();//转换成数组
char[] ch2=str2.toCharArray();//转换成数组
for(int i=0;i<ch1.length;i++){
for(int j=0;j<ch2.length;j++){
temp=d1.compareTo(d2);
}
}
//int temp=d1.compareTo(d2);
return temp;
}
}
public class TreeSets {
public static void main(String[] args) {
//Demo demo=new Demo();
//创建一个TreeSet集合
TreeSet tree=new TreeSet(new SortByNum());
//添加字符
tree.add(new Demo("15"));
tree.add(new Demo("19"));
tree.add(new Demo("16"));
tree.add(new Demo("99"));
System.out.println(tree);
}
}
麻烦大家看一下,就是不知道怎么做,例如:String str="8 10 15 2 5 7";
输出"2 5 7 8 10 15" 谢谢了