Question

Part I. Representation of a String

The primitive type char is used to store a single character, whether it is a letter, number or special character (for example: space, tab, or new line). More often, we want to store a string of characters in a single variable. We can do this by using a variable of the class type String. A String variable can be initialized to a String literal (which is similar to how a char variable can be initialized to a character literal):

char letter; letter = 'a'; String word; word = "food";

We can visualize the multiple characters in a String as a list of characters, where each character can be indexed by its position in the String:

f	o	o	d
0	1	2	3

index numbers

1. What is the index for the character ‘d’ in the String “food”?

2. How many characters long is the String “food”?

3. Sketch a list (with indices numbering each character) for the String “hello world”.

4. If the length of the String “hello world” is 11, what is the index number of ‘d’, the last letter in the String?

5. What is the index for the space in “hello world”?

Answer 1

What is the index for the character ‘d’ in the String “food”?

Ans: from above diagram we can say index is:- 3

How many characters long is the String “food”?

Ans. length of food is = 4

Sketch a list (with indices numbering each character) for the String “hello world”.

h	e	l	l	o		w	o	r	l	d
0	1	2	3	4	5	6	7	8	9	10

If the length of the String “hello world” is 11, what is the index number of ‘d’, the last letter in the String?

index of d is 10. because string store in memory from index 0

What is the index for the space in “hello world”?

index of space is 5 we can see from above diagram

/* PLEASE UPVOTE (THANK YOU IN ADVANCE) */