[Leetcode] Encode and Decode Strings

Encode and Decode Strings

Design a algorithm to encode a list of strings to a string. The encoded string is then sent over the network and are decoded back to the original list of strings.

Machine 1 (sender) has the function:

String encode (vector<string> STRs) {  //... your code  return encoded_string;}

Machine 2 (receiver) has the function:

Vector<string> decode (string s) {  //... your code  return strs;}

So machine 1 does:

String encoded_string = Encode (STRs);

and Machine 2 does:

Vector<string> strs2 = decode (encoded_string);

strs2In Machine 2 should is the same as in Machine strs 1.

Implement the encode and decode methods.

Note:

• The string may contain any possible characters out of the valid ASCII characters. Your algorithm should is generalized enough to work on any possible characters.
• Don't use the class member/global/static variables to store states. Your encode and decode algorithms should be stateless.
• Rely on any library method such as eval or Serialize methods. You should implement your own Encode/decode algorithm.

{"abc", "123", "D"}, 3#abc3#1231#d:res + = to_string (Str.length ()) + "#" + str;

1 classCodec {2  Public:3 4     //encodes a list of strings to a single string.5     stringEncode (vector<string>&STRs) {6         stringRes;7          for(Auto str:strs) {8Res + = to_string (Str.length ()) +"#"+str;9         }Ten         returnRes; One     } A  -     //decodes a single string to a list of strings. -vector<string> Decode (strings) { thevector<string>Res; -         intIDX =0, POS, size; -          while(IDX <s.length ()) { -pos = S.find ('#', idx); +             if(pos = =string:: NPOs) Break; -Size = Stoi (s.substr (IDX, pos-idx)); +Res.push_back (S.substr (pos+1, size)); AIDX = pos +1+size; at         } -         returnRes; -     } - }; -  - //Your Codec object would be instantiated and called as such: in //Codec Codec; - //Codec.decode (Codec.encode (STRs));

[Leetcode] Encode and Decode Strings