求一正则表达式,是关于数字验证的!

Question

要求：　验证数字１-９之间不重复的３个数!

Answer 1

为撒子一定要用正则来验证呢？
把字符串丢进set里面看size再与原来length比较不容易解决点吗？

Answer 2

应该是把字符串分成字符放set里

Answer 3

总感觉我这个写的有点傻。。
public static void main(String[] args) 
{
System.out.println("123".matches("(\\d)(?!\\1)(\\d)(?!\\1|\\2)(\\d)"));
System.out.println("114".matches("(\\d)(?!\\1)(\\d)(?!\\1|\\2)(\\d)"));
System.out.println("124".matches("(\\d)(?!\\1)(\\d)(?!\\1|\\2)(\\d)"));
System.out.println("343".matches("(\\d)(?!\\1)(\\d)(?!\\1|\\2)(\\d)"));
System.out.println("333".matches("(\\d)(?!\\1)(\\d)(?!\\1|\\2)(\\d)"));
System.out.println("161".matches("(\\d)(?!\\1)(\\d)(?!\\1|\\2)(\\d)")); }

Answer 4

随机从1-9里面取3个然后放到set中过滤下

Answer 5

感谢joejoe1991的回复! 虽然说没有完全按照我的要求! 但修改下验证是通过的! 马上揭贴给分!