Strings Unit 2

Question 1

What is a string in programming?

Answer 1

A string is a sequence of characters, like letters, numbers, or symbols, enclosed in quotes.

Question 2

What does the index value of a string character represent?

Answer 2

It represents the position of each character in the string, starting from 0.

Question 3

What function is used to find the number of characters in a string?

Answer 3

The built-in length function, e.g. len(string) in Python.

Question 4

What is string traversal?

Answer 4

String traversal is using a loop to go through a string character by character.

Question 5

What is iteration in the context of strings?

Answer 5

Iteration is repeating an action for each character in a string using a loop.

Question 6

How do you traverse a string using a loop in Python?

Answer 6

for char in string:
print(char)

Question 7

What is string concatenation?

Answer 7

It is the process of joining two or more strings together.
Example: “Hello” + “ “ + “World” → “Hello World”

Question 8

What is string slicing?

Answer 8

Extracting a part of a string using its index values.
Example: text[0:4] → returns characters from index 0 to 3.

Question 9

What is string splitting?

Answer 9

Breaking a string into a list of parts using a separator.
Example: “a,b,c”.split(“,”) → [‘a’, ‘b’, ‘c’]

Question 10

What is string formatting?

Answer 10

Controlling how text is displayed, such as inserting variables into a string.
Example: f”Hello, {name}!”