作业20171109

package Test;

import java.util.ArrayList;
import java.util.List;

public class Test5 {

public static void main(String[] args) {    String str = "hello,world!hello,china!hello,jiangsu!";    String s="hello";    List<Integer> list = getIndexOfStr(str, s);    for (Integer i : list) {        System.out.println(i);    }       }public static List<Integer> getIndexOfStr (String str,String s) {    List<Integer> rs=new ArrayList<Integer>();    if(null!=str) {        Integer index=0;        while(index<str.length()){            index=str.indexOf(s,index);            if (index < 0) {                //不存在，就结束循环                break;        }            else {                rs.add(index);                index=index+s.length();               }               }    }    //返回rs    return rs;}

}