出道题大家做做，C++的
1. Reverse the words in a given English sentence (string) in C or C++ without requiring a separate buffer to hold the reversed string (programming)
For example:
Input: REALLY DOGSDISLIKE MONKEYS
Output: MONKEYS DISLIKEDOGS REALLY
我贴上我的答案，抛砖引玉，大家帮忙看看有什么不足：
// suppose use of temp variable is allowed// there is only one space between two wordsvoid reverseSentence(string &strSentence){ vector<string> words; string::size_type offsite = 0, sepIndex = string::npos; // extract every words into "words" while ((sepIndex = strSentence.find(' ', offsite)) != string::npos) { words.push_back(strSentence.substr(offsite, sepIndex - offsite)); offsite = sepIndex + 1; } if (strSentence.size() > offsite) words.push_back(strSentence.substr(offsite, strSentence.size() - offsite)); if (words.empty()) return; // form a new sentence strSentence.clear(); size_t size = words.size(); for (size_t u=size; u>0; u--) { if (u < size) strSentence.append(" "); strSentence.append(words[u - 1]); }}