The function swaps the values of the string parameters if

Question

Write a void function named sort2 that takes two string parameters and sorts them. The function swaps the values of the string parameters if the 1^st string is lexicographically greater than the 2^nd string and otherwise leaves the strings unchanged. For example:

string s1 = "Orange";

string s2 = "Apple";

sort2(s1, s2);      // now s1 is "Apple" and s2 is "orange"