摘要： //插入、删除等操作之后，迭代器肯定会失效，需要重新设置 bool hasSpaceJustBefore = false;//标志位 while(i != sentence.end()) { if (*i == ' ' || *i == 10)//*i = 10 means '\n' { if (hasSpaceJustBefore)//has space just before,hasSpaceJustBefore = true { j = sentence.erase(i);//delete *i,all elements after i move 1 fo 阅读全文