Mastering String Manipulation

What is the output of 'Hello'.length?

• Hello World

• 6

• 4

• 5

How do you convert a string to lowercase in JavaScript?

• string.convertToLower()

• string.toLowerCase()

• string.toLower()

• string.lowercase()

What method would you use to find the index of a character in a string?

• Use the 'locate' method.

• Use the 'find' method.

• Use the 'search' method.

• Use the 'indexOf' method.

How can you concatenate two strings in Python?

• string1.append(string2)

• string1 & string2

• string1 + string2

• string1.concat(string2)

What does the 'strip()' method do in Python?

• The 'strip()' method removes leading and trailing whitespace from a string.

• The 'strip()' method splits a string into a list of words.

• The 'strip()' method converts a string to uppercase.

• The 'strip()' method adds whitespace to a string.

How do you check if a string contains a substring in Java?

• Check the length of the string and substring for equality.

• Use the 'indexOf' method: string.indexOf(substring) > -1.

• Use the 'contains' method: string.contains(substring).

• Use a regular expression: string.matches(substring)

What is the result of 'abc'.replace('a', 'z')?

• zbc

• abc

• zab

• bbc

How can you split a string into a list in JavaScript?

• Use the slice() method to extract parts of the string.

• Use the split() method on the string.

• Convert the string to a number first.

• Use the join() method on the string.

What is the purpose of the 'join()' method in Python?

• To concatenate elements of an iterable into a single string with a specified separator.

• To find the length of an iterable.

• To reverse the order of elements in an iterable.

• To split a string into a list of substrings.

How do you reverse a string in Java?

• String reversedString = originalString.toCharArray().reverse();

• String reversedString = originalString.split('').reverse();

• String reversedString = new StringBuilder(originalString).reverse().toString();

• String reversedString = originalString.reverse();