{
   "question_id": 702251,
   "question_title": "字符拆分和 反转",
   "question_content": "将IP\"1.1.168.192\"\n\t\t\t\t变换成 IP\"192.168.1.1\"\n\t\t\t\t只改\"\"内的\n\t\t\t\t返回string类型",
   "difficulty": "中等",
   "answer_id": 592646,
   "answer_content": "\n\n```\n #include <vector>\n#include <string>\n#include <iostream>\n\nusing namespace std;\n\nvector<string> split(const string &s, const string &seperator){\n  vector<string> result;\n  typedef string::size_type string_size;\n  string_size i = 0;\n  \n  while(i != s.size()){\n    //找到字符串中首个不等于分隔符的字母；\n    int flag = 0;\n    while(i != s.size() && flag == 0){\n      flag = 1;\n      for(string_size x = 0; x < seperator.size(); ++x)\n        if(s[i] == seperator[x]){\n          ++i;\n          flag = 0;\n          break;\n        }\n    }\n    \n    //找到又一个分隔符，将两个分隔符之间的字符串取出；\n    flag = 0;\n    string_size j = i;\n    while(j != s.size() && flag == 0){\n      for(string_size x = 0; x < seperator.size(); ++x)\n        if(s[j] == seperator[x]){\n          flag = 1;\n          break;\n        }\n      if(flag == 0) \n        ++j;\n    }\n    if(i != j){\n      result.push_back(s.substr(i, j-i));\n      i = j;\n    }\n  }\n  return result;\n}\n\nint main() {\n  string s = \"1.1.168.192\";\n  vector<string> v = split(s, \".\");\n  string result = v[v.size() - 1];\n  for(vector<string>::size_type i = v.size() - 2; i >= 0; i--)\n  {\n    result = result + \".\";\n\tresult = result + v[i];\n  }\n  cout << result;\n}\n```\n\n192.168.1.1",
   "tag_name": "c++",
   "cpp": " #include <vector>\n#include <string>\n#include <iostream>\nusing namespace std;\nvector<string> split(const string &s, const string &seperator){\n  vector<string> result;\n  typedef string::size_type string_size;\n  string_size i = 0;\n  while(i != s.size()){\n\tint flag = 0;\n\twhile(i != s.size() && flag == 0){\n\t  flag = 1;\n\t  for(string_size x = 0; x < seperator.size(); ++x)\n\t\tif(s[i] == seperator[x]){\n\t\t  ++i;\n\t\t  flag = 0;\n\t\t  break;\n\t\t}\n\t}\n\tflag = 0;\n\tstring_size j = i;\n\twhile(j != s.size() && flag == 0){\n\t  for(string_size x = 0; x < seperator.size(); ++x)\n\t\tif(s[j] == seperator[x]){\n\t\t  flag = 1;\n\t\t  break;\n\t\t}\n\t  if(flag == 0) \n\t\t++j;\n\t}\n\tif(i != j){\n\t  result.push_back(s.substr(i, j-i));\n\t  i = j;\n\t}\n  }\n  return result;\n}\nint main() {\n  string s = \"1.1.168.192\";\n  vector<string> v = split(s, \".\");\n  string result = v[v.size() - 1];\n  for(vector<string>::size_type i = v.size() - 2; i >= 0; i--)\n  {\n\tresult = result + \".\";\n\tresult = result + v[i];\n  }\n  cout << result;\n}",
   "topic_link": "https://bbs.csdn.net/topics/600469940",
   "status": 0,
   "keywords": "算法高阶,算法问题选编,多项式与快速傅里叶变换",
   "license": "csdn.net",
   "notebook": {
      "cpp": "https://codechina.csdn.net/csdn/csdn-daily-code/-/jupyter/master/data/notebook/answer/ipynb/cpp/31.ipynb?type=file"
   }
}