public static boolean isLegal(String idCardCode){
if(idCardCode==null || (idCardCode=idCardCode.toUpperCase()).length()!=18
&& idCardCode.length()!=15){
return false;
}
if(idCardCode.length()==15){
return Pattern.matches("^[1-6]\\d{5}\\d{2}[01]\\d[0-3]\\d{4}$", idCardCode);
}else{
boolean bs = Pattern.matches("^[1-6]\\d{5}(19|20)\\d{2}[01]\\d[0-3]\\d{4}[0-9X]$", idCardCode);
if(bs){
int sum = 0;
int[] wi = new int[]{ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };
char[] ai = new char[]{'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'};
for(int i=0; i<wi.length; ++i){
int c = char2int(idCardCode.charAt(i));
sum += wi[i] * c;
}
int mod = sum % 11;
char c = idCardCode.charAt(17);
bs = c==ai[mod];
}
return bs;
}
}
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