#include <iostream> #include<iomanip> using namespace std; int main() { string s;cin>>s; int len = s.length(); for(int i = 0;i<len;i++){ if(s[i]>='0'&&s[i]<='9'){ cout<<"*"<<s[i]; int j = i; while(s[j]>='0'&&s[j]<='9'&&j<len){ j++; if(s[j]>='0'&&s[j]<='9'){ cout<<s[j]; } } i = j-1; cout<<"*"; } else{ cout<<s[i]; } } return 0; }
正序遍历字符串即可,遇到数字使用双指针,然后输出即可