int main() {
string str = "The quick brown fox jumps over the lazy dog";
array(string) ary = str / " ";
// => ({ "The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog" })
string s2 = ary * ", ";
write("%O\n", s2);
// => "The, quick, brown, fox, jumps, over, the, lazy, dog"
return 0;
}
aW50IG1haW4oKSB7CiAgICBzdHJpbmcgc3RyID0gIlRoZSBxdWljayBicm93biBmb3gganVtcHMgb3ZlciB0aGUgbGF6eSBkb2ciOwoKICAgIGFycmF5KHN0cmluZykgYXJ5ID0gc3RyIC8gIiAiOyAKICAgIC8vID0+ICh7ICJUaGUiLCAicXVpY2siLCAiYnJvd24iLCAiZm94IiwgImp1bXBzIiwgIm92ZXIiLCAidGhlIiwgImxhenkiLCAiZG9nIiB9KQoKICAgIHN0cmluZyBzMiA9IGFyeSAqICIsICI7CiAgICB3cml0ZSgiJU9cbiIsIHMyKTsKICAgIC8vID0+ICJUaGUsIHF1aWNrLCBicm93biwgZm94LCBqdW1wcywgb3ZlciwgdGhlLCBsYXp5LCBkb2ciCgogICAgcmV0dXJuIDA7Cn0=
"The, quick, brown, fox, jumps, over, the, lazy, dog"