Test: Strings - 2 - Software Development MCQ

Strings can be defined using single quotes ('') or double quotes (""). For example: 'Hello' and "World" are both valid strings in Python.

The slice notation name[1:3] returns the characters at index 1 and 2 of the string name, excluding the character at index 3. Therefore, the output is "oh".

The len() function is used to determine the length of a string. It returns the number of characters in the string.

The strip() method is used to remove leading and trailing whitespaces from a string in Python. It does not modify the original string but returns a new string with the whitespaces removed.

The join() method is used to join the elements of a list into a single string. It takes a list as an argument and returns a string where the elements of the list are concatenated with the specified separator.

The upper() method returns a new string where all the characters are converted to uppercase. In this case, the output is "HELLO, WORLD!".

The split() method is used to split a string into a list of substrings based on the specified delimiter. If no delimiter is provided, it splits the string at whitespace characters by default.

The replace() method is used to replace occurrences of a specified substring with another substring. In this case, the output is "Helli, World!" because all occurrences of "o" are replaced with "i".

The startswith() method is used to check if a string starts with a specified prefix. In this case, the output is False because the string "Python is fun" does not start with "Java".

The find() method returns the index of the first occurrence of a specified substring in a string. If the substring is not found, it returns -1. In this case, the substring "is" is found at index 7.

The split() method is used to split a string into a list of substrings based on the specified delimiter. It returns a list of substrings.

The split() method is used to split a string into a list of substrings based on the specified delimiter. In this case, the string is split at the comma (",") character, resulting in the list ['Hello', 'World'].

The slice notation [::-1] is used to reverse a string. In this case, the output is "dlroW ,olleH" because the original string "Hello, World!" is reversed.

The count() method is used to count the number of occurrences of a specified substring in a string. In this case, the substring "o" appears three times in the string "Hello, World!".

The slice notation [7:] returns a substring starting from index 7 until the end of the string. In this case, the output is "is fun".