public static string updatedstr() { string [] ar= {"green","red","purple","black"}; string str="the colors (blue), (blue), , (yellow). prefer (orange)"; stringbuilder out = new stringbuilder (); int x = 0; int pos = 0; for(int = str.indexof('(', 0); != -1; = str.indexof('(', + 1)) { out.append (str.substring(pos,i)); // add part between last ) , next ( out.append (ar[x++]); // add replacement word pos = str.indexof(')', i) + 1; } out.append (str.substring(pos)); // add part after final ) return out.tostring (); } i able replace whatever inside parentheses elements string array. here, achieve output of "the colors green, red, , purple. prefer black." now, trying implement scenario string [] ar= {"green","red"} . i output "the colors green, red, , (yellow). prefer (orange)." as can see,...