Section 10.11.1 Check Point Questions4 questions 

Write three statements to reverse a string s using the reverse method in the StringBuilder class.

Write three statements to delete a substring from a string s of 20 characters, starting at index 4 and ending with index 10. Use the delete method in the StringBuilder class.

What is the internal storage for characters in a string and a string builder?

Suppose that s1 and s2 are given as follows:

StringBuilder s1 = new StringBuilder("Java");
StringBuilder s2 = new StringBuilder("HTML");

Show the value of s1 after each of the following statements. Assume that the statements are independent.

a.	s1.append(" is fun");
b.	s1.append(s2);
c.	s1.insert(2, "is fun");
d.	s1.insert(1, s2);
e.	s1.deleteCharAt(3); 
f.	s1.delete(1, 3);
g.	s1.reverse();
h.	s1.replace(1, 3, "Computer");