Arrays in Data Structures MCQ question and answer with solution Page-5 section-1

41.
Which of the following data structures is best suited for implementing an array list in Java?

A. ArrayList

B. LinkedList

C. Stack

D. Queue

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42.
How do you find the maximum element in an array in Python?

A. max(array)

B. array.max()

C. max(array[])

D. array.maximum()

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43.
What happens when you access an array element out of bounds in C++?

A. The program crashes

B. The compiler throws an error

C. The runtime throws an error

D. Undefined behavior

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44.
How do you copy an array in C++?

A. std::copy

B. copyArray

C. memcpy

D. copy()

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45.
Which of the following is a correct way to declare a constant array in JavaScript?

A. const array = [1, 2, 3];

B. constant array = [1, 2, 3];

C. array = constant [1, 2, 3];

D. array.constant = [1, 2, 3];

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46.
Which matrix has most of the elements (not all) as Zero?

A. Identity Matrix

B. Unit Matrix

C. Sparse Matrix

D. Zero Matrix

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47.
It is not possible to find the minimum number of steps to reach the end of an array in linear time.

A. true

B. false

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48.

What is the time complexity of the following code that determines the number of inversions in an array?

int InvCount(int arr[], int n) 
{ 
	int count = 0; 
	for (int i = 0; i < n - 1; i++) 
		for (int j = i + 1; j < n; j++) 
			if (arr[i] > arr[j]) 
				count++; 
 
	return count; 
}

A. O(n)

B. O(n log n)

C. O(n²)

D. O(log n)

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49.
If column-major order is used, how is the following matrix stored in memory?
a b c
d e f
g h i

A. ihgfedcba

B. abcdefghi

C. cfibehadg

D. adgbehcfi

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50.
What is the time complexity of the juggling algorithm to rotate an array?

A. O(1)

B. O(n)

C. O(d)

D. O(n*d)

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41.
Which of the following data structures is best suited for implementing an array list in Java?

Answer & Solution

42.
How do you find the maximum element in an array in Python?

Answer & Solution

43.
What happens when you access an array element out of bounds in C++?

Answer & Solution

44.
How do you copy an array in C++?

Answer & Solution

45.
Which of the following is a correct way to declare a constant array in JavaScript?

Answer & Solution

46.
Which matrix has most of the elements (not all) as Zero?

Answer & Solution

47.
It is not possible to find the minimum number of steps to reach the end of an array in linear time.

Answer & Solution

48.
What is the time complexity of the following code that determines the number of inversions in an array?

`int InvCount(int arr[], int n) { int count = 0; for (int i = 0; i < n - 1; i++) for (int j = i + 1; j < n; j++) if (arr[i] > arr[j]) count++; return count; }`

Answer & Solution

49.
If column-major order is used, how is the following matrix stored in memory?
a b c
d e f
g h i

Answer & Solution

50.
What is the time complexity of the juggling algorithm to rotate an array?

Answer & Solution

Read More Section(Arrays in Data Structures)

Arrays in Data Structures MCQ question and answer with solution

41. Which of the following data structures is best suited for implementing an array list in Java?

Answer & Solution

42. How do you find the maximum element in an array in Python?

Answer & Solution

43. What happens when you access an array element out of bounds in C++?

Answer & Solution

44. How do you copy an array in C++?

Answer & Solution

45. Which of the following is a correct way to declare a constant array in JavaScript?

Answer & Solution

46. Which matrix has most of the elements (not all) as Zero?

Answer & Solution

47. It is not possible to find the minimum number of steps to reach the end of an array in linear time.

Answer & Solution

48. What is the time complexity of the following code that determines the number of inversions in an array? int InvCount(int arr[], int n) { int count = 0; for (int i = 0; i < n - 1; i++) for (int j = i + 1; j < n; j++) if (arr[i] > arr[j]) count++; return count; }

Answer & Solution

49. If column-major order is used, how is the following matrix stored in memory? a b c d e f g h i

Answer & Solution

50. What is the time complexity of the juggling algorithm to rotate an array?

Answer & Solution

Read More Section(Arrays in Data Structures)

41.
Which of the following data structures is best suited for implementing an array list in Java?

42.
How do you find the maximum element in an array in Python?

43.
What happens when you access an array element out of bounds in C++?

44.
How do you copy an array in C++?

45.
Which of the following is a correct way to declare a constant array in JavaScript?

46.
Which matrix has most of the elements (not all) as Zero?

47.
It is not possible to find the minimum number of steps to reach the end of an array in linear time.

48.
What is the time complexity of the following code that determines the number of inversions in an array?

`int InvCount(int arr[], int n) { int count = 0; for (int i = 0; i < n - 1; i++) for (int j = i + 1; j < n; j++) if (arr[i] > arr[j]) count++; return count; }`

49.
If column-major order is used, how is the following matrix stored in memory?
a b c
d e f
g h i

50.
What is the time complexity of the juggling algorithm to rotate an array?