微軟實(shí)習(xí)生筆試題目

　　Choose部分是我自己做的答案,非標(biāo)準(zhǔn)答案.有些題目選項(xiàng)記不起來(lái)了,非常抱歉.

　　1. Selection sort 80 items, after 32 iterations, how many positions of items are determined?

　　Choose：32。

　　2. Which is used in sync process//thread in operation system?

　　A. Mutex B.mailbox C.Semaphore D.local procedure call

　　Choose: AC

　　3. Size of a stack is 5, input is a sequence 1, 2, …, 7, which is possible output?

　　A. 1234567 B. 7654321 C.5643721 D. 1765432 E. 3217564

　　Choose: AC

　　4. 010111001 * 011001 + 1101110 = ?

　　A. 0001010000111111 B. 0101011101110011 C. 0011010000110101

　　Choose: A

　　5. What is the output of the follow code?

　　void main(int argc, char* argv[]) {

　　int i = 11;

　　int const *p = &i;

　　p++;

　　cout<<*p<

　　A. 11 B. 12 C. Garbage value D. Comipler error E. None of above

　　Choose: C

　　6. Which code is correct?

　　C. vector f() {

　　vector v(3);

　　return v;

　　}

　　E. None of above

　　Choose: C

　　7. Which number has difference 78633 after 180-degree rotation?

　　A. 60918 B.91086 C. 18609 D. 10968 E.86901

　　Choose: D

　　8 Which statement is true?

　　A. Inorder and preorder can determine a Binary tree

　　B. Postorder and preorder can determine a Binary tree

　　C. For almost sorted array, Insertion sort is more efficient than Quicksort

　　D. If T(n)=2T(n/2)+⊖(n), Then T(n)=⊖(nLogn)

　　E. none of above

　　Choose: ACD

　　9. Which statement is true?

　　A. Insertion and buble sort are not effient for large data sets

　　B. The complexity of Quick Sort is O(n2) in worst case

　　C. It is needed 6 swap operations to sort sequence 7,6,5,4,3,2,1(ascending) by Selection sort

　　D. Heap sort has two operations: Insertion and root deletion

　　E. None of above

　　No choose

　　12. The output of the following code is 0 20 1 20, what are the type of a and b?

　　class Test{

　　____ int a;

　　____ int b;

　　Test(int _a, int _b) {a = _a; b=_b;}

　　}

　　void main() {

　　Test t1(0, 0), t2(1,1);

　　t1.b = 10;

　　t2.b = 20;

　　cout<

　　}

　　A. static/const B. const/static C. __/static D. const static/static E. None of

　　above

　　Choose: C

　　13. A 3-order B-tree has 2047 key words, what is the maximum height?

　　A. 11 B. 12 C. 13 D. 14

　　no choose

　　14. Which can be used both to variable and function?

　　A. static B. virtual C. extern D. inline E. const

　　Choose: ACE

　　15. What is the output of the follow code?

　　char * f(char *str, char ch) {

　　char *it1 = str;

　　char *it2 = str;

　　while(*it2 != '\0') {

　　while(*it2 == ch)

　　{

　　it2++;

　　}

　　*it1++ = *it2++;

　　}

　　return str;

　　}

　　int main(int argc, char* argv[]) {

　　char *a = new char[10];

　　strcpy(a, "abcdcccd");

　　cout<

　　return 0;

　　}

　　A. abdcccd B. abdd C. abcc D. abddcccd E. Access violation

　　Choose: D

　　16. What is the complexity of the result call of power(b, e) in the follow code?

　　int power(int b, int e) {

　　if(e==0) return 1;

　　if(e%2 == 0) return power(b*b, e/2);

　　return b*power(b*b,e/2);

　　}

　　A. logarithmic B. linear C. quadratic D. exponentical

　　Choose: A

　　17. Take 2 cards from one full poker(52 cards, 26 red and 26 black) and half poker each, what is the probability of the event that two cards are both red?

　　A. 1/2,1/2 B. 25/102,12/50 C. 50/51, 24/25 D. 25/51,12/25 E. 25/51,1/2

　　Choose: B

　　18. How many kinds of output of stack with the input 1,2,…,n?

　　B. C_2n^n-C_2n^(n+1) C. ((2n)!)/(n+1)n!n! D. n! E. none

　　Choose: C

　　19. What is the minimum time and space complexity to compute the Largest Increased Subsequence(LIS) of array?

　　A. N^2,N^2 B. N^2,N C. NlogN,N D. N, N E. N,C

　　Choose: C

　　20. What is the output of the follow code?

　　struct Item{

　　char c;

　　Item *next;

　　};

　　Item* f1(Item* x){

　　Item *prev = NULL;

　　Item *curr = x;

　　while(curr) { Item *next = curr->next;

　　curr->next = prev;

　　prev = curr;

　　curr = next;

　　}

　　return prev;

　　}

　　void f2(Item *x){

　　while(x){

　　cout<c;

　　x = x->next;

　　}

　　}

　　int main(int argc, char* argv[]){

　　Item *x, d = {'d', NULL}, c = {'c', &d}, b = {'b', &c}, a = {'a', &b};

　　x = f1(&a);

　　f2(x);

　　return 0;

　　}

　　Choose: dcba

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