题解 | #字符统计#
字符统计
https://www.nowcoder.com/practice/c1f9561de1e240099bdb904765da9ad0
#include <iostream> #include <map> using namespace std; int main() { string s; string s0; cin >> s; map<char,int> l; map<int,string> q; for(auto e : s){ l[e]++; } for(auto e : l){ q[e.second].push_back(e.first); } for(auto e : q){ s0 = e.second + s0; } cout << s0 << endl; } // 64 位输出请用 printf("%lld")