Chapter 4 - Strings and Associative Arrays

Question 1

Strings are arrays of characters?

Answer 1

More accurately, you can READ individual chracters the same way you read specific values in a numerical array, and these individual values are strings of length

Question 2

Are strings mutable?

Answer 2

No they are immutable: they can be completely replaced in their entirety, but not changed piecewise.

Question 3

How would I be able to manipulate string characters?

Answer 3

You must :

1) Split the string into an array
2) Make individual changes within that array
3) Then join the array to reform a string

Question 4

Referencing individual elements using»>
Convert string to array using&raquo_space;>
Convert array back to string usng»>

Answer 4

String.length, string.split, array.join

Question 5

Describe string.split

Answer 5

Converts string to array, splitting on the provided parameter.

Question 6

Describe what array.join does

Answer 6

By default it will convert an array to a string. Using a provided parameter as a separator…by default it will use ‘,’