var?arr?=?str.split(",");
var?map?=?{};
for?(var?i?=?0;?i?<?arr.length;?i++)?{
var?j?=?arr[i];
if?(map[j]?!=?undefined)?{
map[j]?=?map[j]?+?1;
}
else?{
map[j]?=?1;
}
}
//?output
var?output?=?[];
for?(key?in?map)?{
output.push(key?+?"("?+?map[key]?+?")");
}
alert(output.join(","));