第三题我的解法,可惜快交卷才有思路 #include <iostream> #include <string> #include <algorithm> using namespace std; int search(string str1) { char minChar = str1[0], maxChar = str1[0]; char tmp = minChar; int ans = 0; for (int i=1; i<str1.size(); ++i) { if (str1[i] =...