Regular Expression Pattern

Question

I want to match a array pattern in the string specified Specified string may be any one of this public function fu_santhu(int a,int b[],string s) public function ggggg(string sss[],float f,decimal d,double dd) public function rrrttt(decimal dd[], int a,int b,string sd) So want to match the pattern where this "[] " pattern exists in a function declaration. Can anyone say me how to specify the pattern? Thank you.