public static String stringBuilderJoinMem2(){
StringBuilder s = new StringBuilder(9000).append("[");
if(0<strarray.length) {
s.append(strarray[0]);
}
for(int i = 1; i < strarray.length; ++i){
s.append("],[");
s.append(strarray[i]);
}
s.append("]");
return s.toString();
}
ICAgIHB1YmxpYyBzdGF0aWMgU3RyaW5nIHN0cmluZ0J1aWxkZXJKb2luTWVtMigpewogICAgICAgIFN0cmluZ0J1aWxkZXIgcyA9IG5ldyBTdHJpbmdCdWlsZGVyKDkwMDApLmFwcGVuZCgiWyIpOwogICAgICAgIGlmKDA8c3RyYXJyYXkubGVuZ3RoKSB7CiAgICAgICAgICAgIHMuYXBwZW5kKHN0cmFycmF5WzBdKTsKICAgICAgICB9CiAgICAgICAgZm9yKGludCBpID0gMTsgaSA8IHN0cmFycmF5Lmxlbmd0aDsgKytpKXsKICAgICAgICAgICAgcy5hcHBlbmQoIl0sWyIpOwogICAgICAgICAgICBzLmFwcGVuZChzdHJhcnJheVtpXSk7CiAgICAgICAgfQogICAgICAgIHMuYXBwZW5kKCJdIik7CiAgICAgICAgcmV0dXJuIHMudG9TdHJpbmcoKTsKICAgIH0=