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Test: Arrays - 1 - Software Development MCQ


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15 Questions MCQ Test Basics of Python - Test: Arrays - 1

Test: Arrays - 1 for Software Development 2024 is part of Basics of Python preparation. The Test: Arrays - 1 questions and answers have been prepared according to the Software Development exam syllabus.The Test: Arrays - 1 MCQs are made for Software Development 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Arrays - 1 below.
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Test: Arrays - 1 - Question 1

Which of the following statements about arrays in Python is true?

Detailed Solution for Test: Arrays - 1 - Question 1

In Python, arrays can be multi-dimensional, meaning you can have arrays of arrays, also known as nested arrays.

Test: Arrays - 1 - Question 2

What is the time complexity for accessing an element in an array in Python?

Detailed Solution for Test: Arrays - 1 - Question 2

Accessing an element in an array in Python has a time complexity of O(1), as the index is used to directly access the element.

Test: Arrays - 1 - Question 3

In Python, how can you determine the length of an array?

Detailed Solution for Test: Arrays - 1 - Question 3

The len() function can be used to determine the length of an array in Python. It returns the number of elements in the array.

Test: Arrays - 1 - Question 4

Which of the following statements is true about arrays in Python?

Detailed Solution for Test: Arrays - 1 - Question 4

Python does not have built-in support for arrays. However, it provides lists that can be used as arrays.

Test: Arrays - 1 - Question 5

What is the index of the first element in an array in Python?

Detailed Solution for Test: Arrays - 1 - Question 5

In Python, the index of the first element in an array is 0. Indexing starts from 0.

Test: Arrays - 1 - Question 6

What will be the output of the following code?
arr = [2, 4, 6, 8]
print(arr[1])

Detailed Solution for Test: Arrays - 1 - Question 6

The code arr[1] accesses the element at index 1 in the array arr, which is 4.

Test: Arrays - 1 - Question 7

What will be the output of the following code?
arr = [5, 10, 15, 20, 25]
print(arr[-2])

Detailed Solution for Test: Arrays - 1 - Question 7

The code arr[-2] accesses the second-to-last element in the array arr, which is 20.

Test: Arrays - 1 - Question 8

What will be the output of the following code?
arr = [1, 2, 3, 4, 5]
print(arr[2:4])

Detailed Solution for Test: Arrays - 1 - Question 8

The code arr[2:4] retrieves a sublist of arr starting from index 2 (inclusive) and ending at index 4 (exclusive), resulting in [3, 4].

Test: Arrays - 1 - Question 9

What will be the output of the following code?
arr = [1, 2, 3, 4, 5]
print(arr[-3:-1])

Detailed Solution for Test: Arrays - 1 - Question 9

The code arr[-3:-1] retrieves a sublist of arr starting from the third-to-last element (index -3) and ending at the second-to-last element (index -1), resulting in [3, 4].

Test: Arrays - 1 - Question 10

What will be the output of the following code?
arr = [1, 2, 3, 4, 5]
print(arr[::-1])

Detailed Solution for Test: Arrays - 1 - Question 10

The code arr[::-1] creates a reversed copy of the array arr.

Test: Arrays - 1 - Question 11

Given the following code, what will be the output?
arr = [1, 2, 3, 4, 5]
arr[2] = 10
print(arr)

Detailed Solution for Test: Arrays - 1 - Question 11

The code arr[2] = 10 modifies the element at index 2 of arr to be 10.

Test: Arrays - 1 - Question 12

Given the following code, what will be the output?
arr = [1, 2, 3, 4, 5]
arr.append(6)
print(arr)

Detailed Solution for Test: Arrays - 1 - Question 12

The code arr.append(6) adds the element 6 to the end of the array arr.

Test: Arrays - 1 - Question 13

Given the following code, what will be the output?
arr = [1, 2, 3, 4, 5]
arr.remove(3)
print(arr)

Detailed Solution for Test: Arrays - 1 - Question 13

The code arr.remove(3) removes the first occurrence of the element 3 from the array arr.

Test: Arrays - 1 - Question 14

Given the following code, what will be the output?
arr = [1, 2, 3, 4, 5]
arr.pop(2)
print(arr)

Detailed Solution for Test: Arrays - 1 - Question 14

The code arr.pop(2) removes and returns the element at index 2 of arr.

Test: Arrays - 1 - Question 15

Given the following code, what will be the output?
arr = [1, 2, 3, 4, 5]
del arr[1:3]
print(arr)

Detailed Solution for Test: Arrays - 1 - Question 15

The code del arr[1:3] deletes the elements at indices 1 and 2 from the array arr.

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