class Solution { public: //将数字转成字符串 string itos(int n) { if (n == 0)return"0"; string s; while (n) { s += '0' + n % 10; n /= 10; } reverse(s.begin(),s.end()); return s; } bool operator()(string s1, string s2) { int minlen = min(s1.size(), s2.size()); int maxlen = max...