SAP笔试试题

时间：2020-12-07 20:00:54 笔试题目我要投稿

SAP笔试试题

　　1.Below is usual way we find one element in an array:

SAP笔试试题

　　const int *find1(const int* array, int n, int x)

　　{

　　const int* p = array;

　　for(int i = 0; i < n; i++)

　　{

　　if(*p == x)

　　{

　　return p;

　　}

　　++p;

　　}

　　return 0;

　　}

　　In this case we have to bear the knowledge of value type "int", the size of

　　array,

　　even the existence of an array. Would you re-write it using template to elim

　　inate all

　　these dependencies?

　　2. Assume you have a class like

　　class erp

　　{

　　HR* m_hr;

　　FI* m_fi;

　　public:

　　erp()

　　{

　　m_hr = new HR();

　　m_fi = new FI();

　　}

　　~erp()

　　{

　　}

　　};

　　if "new FI()" failed in the constructor, how can you detect this problem and

　　release the

　　properly allocated member pointer m_hr?

　　3. Check the class and variable definition below:

　　#include

　　using namespace std;

　　class Base

　　{

　　public:

　　Base() { cout<<"Base-ctor"< ~Base() { cout<<"Base-dtor"< virtual void f(int) { cout<<"Base::f(int)"< virtual void f(double) {cout<<"Base::f(double)"< virtual void g(int i = 10) {cout<<"Base::g()"<};

　　class Derived: public Base

　　{

　　public:

　　Derived() { cout<<"Derived-ctor"< ~Derived() { cout<<"Derived-dtor"< void f(complex) { cout<<"Derived::f(complex)"< virtual void g(int i = 20) {cout<<"Derived::g()"<};

　　Base b;

　　Derived d;

　　Base* pb = new Derived;

　　Select the correct one from the four choices:

　　Cout

　　pb->f(1.0);

　　A.Derived::f(complex) B.Base::f(double)

　　pb->g();

　　A.Base::g() 10 B.Base::g() 20

　　C.Derived::g() 10 D.Derived::g() 20

　　4.Implement the simplest singleton pattern(initialize if if necessary).

　　5.Name three sort algorithms you are familiar with. Write out the correct or