Lists and arrays for a test
Understanding lists and arrays is crucial for organizing data in programming. This study material covers key concepts and differences between the two.
Quiz(12 domande)
1. What is the main characteristic of an array?
Termini in questo set(15)
What is a list?
A collection of ordered items. Lists can hold different data types.
What is an array?
A collection of items of the same data type stored in contiguous memory.
Difference between lists and arrays
Lists can hold varied data types; arrays are type-specific.
True or false: Lists are mutable.
True, because you can change a list after it's created.
True or false: Arrays can resize dynamically.
False, because arrays have a fixed size once defined.
Fill in the blank: In Python, a list is created using ____.
square brackets: []
What is indexing in lists?
Accessing elements by their position, starting from 0.
Define a two-dimensional array.
An array containing arrays, representing a grid structure.
What method adds an item to a list in Python?
The append() method adds an item at the end of the list.
Example of an array declaration in Java.
int[] nums = {1, 2, 3};
What does slicing a list mean?
Extracting a part of the list using a range of indices.
True or false: Arrays can store different data types.
False, because all elements must be of the same type.
Which is faster: list or array?
Arrays are generally faster due to fixed sizes and type consistency.
What does 'length' return for an array?
The number of elements in the array.
How to access the first element of a list?
Use index 0 like: listName[0].
Domande in questo set(12)
1. What is the main characteristic of an array?
2. Which of the following is NOT a property of a list?
3. How do you add an element to an array?
4. Which data structure is more memory efficient?
5. In Python, how do you access the second item in a list?
6. Which is typically faster for accessing elements?
7. What is the result of slicing a list?
8. Which structure can contain different data types?
9. Which method removes the last item from a list?
10. What does an index out of range error indicate?
11. Which programming language uses lists as a fundamental data type?
12. Which operation would generally be slower on a list?
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