数据结构（全英文） 知到智慧树答案2024 z24861

第一章 单元测试

1、
The algorithm and flowchart can help us to

A:To know the memory capacity

B:Identify the data type of a variable

C:To store the data

D:Specify the problem completely and clearly

答案: Specify the problem completely and clearly

2、
 The rhombus or diamond shape in flowcharting denotes

A:Decision

B:Initialization

C:Input

D:Output

答案: Decision

3、
Which of the following is not an advantage of a flowchart?

A:Better communication

B:Efficient coding

C:Systematic testing

D:Improper documentation

答案: Improper documentation

4、
The flowchart symbols used for start and stop operations are called as_______.

A:decision

B:processing

C:terminals

D:connectors
答案: terminals

5、
The formula F_n = F_n-1+F_n-2  will produce

A:Prime Number

B:Euler Number

C:Ramanujan Number

D:Fibonacci Number

答案: Fibonacci Number

6、
The main measures for the efficiency of an algorithm are

A:Processor and memory

B:Complexity and capacity

C:Time and space

D:Data and space

答案: Time and space

7、
Which one of the following is the constant time complexity in terms of Big-Oh notation

A:O(n)

B:O(n²)

C:O(1)

D:O(n³)

答案: O(1)

8、

What is the time complexity of the following code?

       int a=0;

    for(i=0;i<n;i++){

        for(j=n;j>i;j–){

            a=a+i+j;}}

A:O(n)

B:O(nlogⁿ)

C:O(1)

D:O(n²)

答案: O(n²)

9、
Which one of the following is an example for exponential time complexity?

A:O(n)

B:O(2ⁿ)

C:O(1)

D:O(n²)

答案: O(2ⁿ)

10、
 For larger values of n, which one represents the slowest time?

A:O(n)

B:O(2ⁿ)

C:O(n!)

D:O(n²)

答案: O(n!)

第二章 单元测试

1、
Deletion of an element from the array reduces the size of array by ___________.

A:one

B:two

C:three

D:zero

答案: one

2、
Assuming that int is of 4 bytes, what is the size of int arr[10];?

A:10

B:20
C:30
D:40
答案: 40

3、
Two dimensional arrays are useful when the elements being processed are to be arranged in the form of ___________.

A:rows

B:columns

C:Both (a) and (b)

D:None of the above

答案: Both (a) and (b)

4、
 In the polynomial,  A(x)= 3x²+2x+4, the degree of this polynomial is

A:0

B:1
C:2
D:3
答案: 2

5、
 In the polynomial,  A(x)= 3x²+2x+4, coefficient of first term is

A:0

B:1
C:2
D:3
答案: 3

6、

A matrix having a larger number of elements with zero values than the number of non-zero elements is said to be a_____________.

A:    diagonal matrix

B:    sparse matrix

C:    triangular matrix

D:    zero matrix

答案:     sparse matrix

7、
 While representing the sparse matrix A (m×n) with t non-zero terms in 3-tuples form, the size of the matrix becomes

A:m × n

B:t × n

C:(t+1) × 3

D:3 × t

答案: (t+1) × 3

8、

Considering a sparse of m×n matrix with t non-zero terms, in FAST_TRANSPOSE algorithm, the size of one-dimensional array (S or T) is equal to:

A:n

B:t
C:m
D:n+t
答案: n

9、
Considering a sparse of m×n matrix with t non-zero terms, the time complexity of TRANSPOSE algorithm is:

A:O(n^t)

B:O(n-t)

C:O(n*t)

D:O(n+t)

答案: O(n*t)

10、

Which of the following statement is true regarding TRANSPOSE and FAST_TRANSPOSE algorithms.

A:

The TRANSPOSE algorithm is faster than FAST_TRANSPOSE

B:The TRANSPOSE algorithm is slower than FAST_TRANSPOSE

C:

Time complexities of TRANSPOSE and FAST_TRANSPOSE are same

D:None of the above

答案: The TRANSPOSE algorithm is slower than FAST_TRANSPOSE

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