public class YuGiOh{public static void main ( String[] args ){String input = "abcdefghijk";String regex = "(.{2})";input = input.replaceAll (regex, "$1 ");System.out.println (input);}}
java中给字符串中每两位字符加一个空格
public class YuGiOh{public static void main ( String[] args ){String input = "abcdefghijk";String regex = "(.{2})";input = input.replaceAll (regex, "$1 ");System.out.println (input);}}
2015-02-10
循环下string的char 每两个字符后面插一个空格最后生成string输出2015-02-10
"sfdsa".replaceAll("", " ");2015-02-10
