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java//Road.javapackage shiyan9;public abstract class Road { protected Vehicle vehicle; public void setVehicle(Vehicle ve) { this.vehicle=ve; } public 阅读全文
posted @ 2022-11-15 16:05
华茹
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java//Cat.javapackage shiyan8;public interface Cat { public void cry(); public void zhua();} //Dag.javapackage shiyan8;public interface Dog { public v 阅读全文
posted @ 2022-11-15 15:05
华茹
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#include <iostream> using namespace std; class S_num{private: static S_num sno; static int num;public: static S_num getintance() { // TODO Auto-genera 阅读全文
posted @ 2022-11-15 14:05
华茹
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