2013微软暑期实习笔试题及答案

这份2013年微软暑期实习生招聘笔试题来自网上资料，我将其抄出来便于阅读和保存。对比2012年暑期实习生招聘笔试题，2013年的题目水了许多，几个brain teaser都是往年见惯的，还有考察MVC模式这种工作中才会遇到的问题，无语。不过还是找工作找实习的同学们建议先自己做一遍，然后再寻找答案。末尾也附有我自己的一份答案，那道MVC的题目就直接略过了。如果您有不一致的答案，欢迎跟贴留言交流哈。

2013 Microsoft Campus Intern Hiring Written Test

1. Which of the following convension(s) support(s) support variable length parameter (e.g. printf)? (3 Points)
A. cdecl
B. stdcall
C. pascal
D. fastcall

2. What's the output of the following code? (3 Points)

class A
{
public:
virtual void f()
{
cout << "A::f()" << endl;
}
void f() const
{
cout << "A::f() const" << endl;
}
};

class B: public A
{
public:
void f()
{
cout << "B::f()" << endl;
}

void f() const
{
cout << "B::f() const" << endl;
}
};

void g(const A *a)
{
a->f();
}

int main()
{
A *a = new B();
a->f();
g(a);
delete a;
}

A. B::f() B::f() const
B. B::f() A::f() const
C. A::f() B::f() const
D. A::f() A::f() const

3. What is the difference between a linked list and an array? (3 Points)
A. Search complexity when both are sorted
B. Dynamically add/remove
C. Random access efficiency
D. Data storage type

4. About the Thread and Process in Windows, which description(s) is (are) correct? (3 Points)
A. One application in OS must have one Process, but not a necessary to have one Thread
B. Thre process could have its own Stack but the thread only could share the Stack of its parent Process
C. Thread must belong to a Process
D. Thread could change its belonging Process

5. What is the output of the following code? (3 Points)

{
int x = 10;
int y = 10;
x = x++;
y = ++y;

printf("%d, %d\n", x, y);
}

A. 10, 10
B. 10, 11
C. 11, 10
D. 11, 11

6. For the following Java or C# code (3 Points)

int[][] myArray3 =
new int[3][] {
new int[3]{5, 6, 2},
new int[5]{6, 9, 7, 8, 3},
new int[2]{3, 2}
};

What will

myArray3[2][2]

return?
A. 9
B. 2
C. 6.
D. overflow

7. Please choose the right statement about const usage: (3 Points)
A. const int a; // const integer
B. int const a; // const integer
C. int const *a; // a pointer which point to const integer
D. const int *a; // a const pointer which point to integer
E. int const *a; // a const pointer which point to integer

8. Given the following code: (3 Points)

#include <iostream>
class A
{
public:
long a;
};

class B: public A
{
public:
long b;
}

void seta(A *data, int idx)
{
data[idx].a = 2;
}

int _tmain(int argc, _TCHAR *argv[])
{
B data[4];

for (int i = 0; i < 4; ++i)
{
data[i].a = 1;
data[i].b = 1;
seta(data, i);
}

for (int i = 0; i < 4; ++i)
{
std::cout << data[i].a << data[i].b;
}

return 0;
}

What is the correct result?
A. 11111111
B. 12121212
C. 11112222
D. 21212121

9. 1 of 1000 bottles of water is poisoned which will kill a rat in 1 week if the rat drunk any amount of the water. Given the bottles of water have no visual difference, how many rates are needed at least to find the poisoned one in 1 week? (5 Points)
A. 9
B. 10
C. 32
D. 999
E. None of the above

10. Which of following statement(s) eaual(s) value 1 in C programming language? (5 Points)
A. the return value of main function if program ends normally
B. return (7 & 1);
C. char *str = "microsoft"; return str == "microsoft";
D. return "microsoft" == "microsoft";
E. None of the above

11. If you computed 32 bit signed integers F and G from 32 bit signed integer X using F = X/2 and G = (X >> 1), and if you found F != G, this implies that (5 Points)
A. There's a compiler error
B. x is odd
C. X is negative
D. F - G = 1
E. G - F = 1

12. How many rectangles you can find from 3 * 4 grid? (5 Points)
A. 18
B. 20
C. 40
D. 60
E. None of the above is correct

13. One line can split of a surface to 2 parts, 2 lines can split a surface to 4 parts. Given 100 lines, no two parallel lines, no three lines join at same point, how many parts can 100 lines split? (5 Points)
A. 5051
B. 5053
C. 5510
D. 5511

14. Which of the following sorting algorithm(s) is(are) stabe sorting? (5 Points)
A. bubble sort
B. quicksort
C. heap sort
D. merge sort
E. Selection sort

15. Model-View-Contrller (MVC) is an architectural pattern that is frequently used in web applications. Which of the following statement(s) is(are) correct? (5 Points)
A. Models often represent data and the business logics needed to manipulate the data in the application
B. A View is a (visual) representation of its model. It renders the model into a form suitable for interaction, typically a user interface element
C. A controller is the linke between a user and the system. It accepts input from the user and instructs the model and a view to perform actions based on that input
D. The common practice of MVC in web applications is, the model receives GET or POST input from user and decides what to do with it, handing over to controller and which hand control to views (HTML-generating components)

16. We can recover the binary tree if given the output of (5 Points)
A. Preorder traversal and inorder traversal
B. Preorder traversal and postorder traversal
C. Inorder traversal and postorder traversal
D. Postorder traversal

17. Given a string with n characters, suppose all the characters are different from each other, how many substrings do we have? (5 Points)
A. n + 1
B. n^2
C. n(n+1)/2
D. 2^n-1
E. n!

18. Given the following database table, how many rows will the following SQL statement update? (5 Points)
update Books set NumberofCopies = NumberOfCopies + 1 Where AuthorID
in
Select AutorID from Books
group by AuthorID
having sum(NumberOfCopies) <= 8

BookID	Title	Category	NumberOfCopies	AuthorID
1	SQL Server 2008	MS	3	1
2	SharePoint 2007	MS	2	2
3	SharePoint 2010	MS	4	2
5	DB2	IBM	10	3
7	SQL Server 2012	MS	6	1

A. 1
B. 2
C. 3
D. 4
E. 5

19. What is the sortest path between S and node T, given the graph below? Note: the numbers represent the lengths of the connected nodes (13 Points)

[Sorry Cannot draw the graph]

20. Given a set of N balls and one of which is defective (weighs less than others), you are allowed to weigh with a balance 3 times to find the defective. Which of the following are possible N? (13 Points)
A. 12
B. 16
C. 20
D. 24
E. 28

Reverse select to view my answers
==============
1. A 2. B 3. BCD 4. AC 5. D
6. D 7. ABC 8. D (No correct answer) 9. _ 10. B
11. C 12. D 13. A 14. AD 15. _
16. AC 17. E 18. B 19. _ 20. ABCD

==============