java截取字符串,重新组装新的字符串的问题答:import java.util.ArrayList;import java.util.List;public class CutString { public static void main(String[] args){ String str = "1,2,3,4,5,6,7,8,9,10,21,2,3,4";String t[] = str.split(",");List<String> list = new ArrayList<String>();String temp = "";for(int ...