摘要： abstract class material{ int weight;}class wood extends material{}class plastic extends material{}class metal extends material{}interface furniture { material getMaterial(); void setMaterial(material m);}class table implements furniture{ material mat; public material getMaterial(){ ... 阅读全文

摘要： public class person { BloodType bloodtype; enum BloodType{A,B,O}; String FirstName, LastName; String BirthDay; Body body;}abstract class part{ float weight; void setWeight(float w){ weight = w;} float getWeight(){ return weight;}}class Body{ Arm[] arms; Head head; L... 阅读全文

摘要： 给个猜词小游戏的app，显示一个合法string的anagram，要求用户一分钟内给答案，返回对错，time out之后返回所有的正确答案。dictionary作为list，已知。 （预处理dictionary,用hashtable存，key是string排序后的结果，每个slot用bst存，时间为logk）eg:给atme，正确答案包括team, mate, meat, tame 阅读全文

摘要： String * ptr_str = static_cast(3*malloc(sizeof(String)));only Allocates the memory ;String * ptr_str2 = new String[3];calls the constructure of string class;delete[]ptr;if delete ptr only delte string[0] 阅读全文