Which string method is used to remove leading and trailing whitespace from a string?

What will the following code snippet output?

string = 'Hello, world!'
new_string = string.replace('o', 'a', 2)
print(new_string)

Which method is used to check if a string contains a specified sequence of characters?

Which string method is used to convert a string to lowercase?

Which string method is used to split a string into an array of substrings?

What is the output of the following code?

String str = "Hello World!";
System.out.println(str.substring(6, 11));

What will the following code snippet output?

str = "Hello World!";
print(str.substring(6));

What is the result of a string slice operation?

Which symbol is used to perform string slicing?

Which method is used to find the index of a specified character within a string?

Which string method is used to convert a string to uppercase?

What happens if the start index is greater than the end index in a string slice?

Which of the following statements is true about the 'replace' method?

What does string slicing do?

Which method is used to join elements from a list into a single string in Python?