Unit 3/4

Question 1

Name the De Morgan Laws.

Answer 1

not (A or B) = (not A) and (not B)
not (A and B) = (not A) or (not B)

Question 2

What does ! symbolize?

Answer 2

not

Question 3

What does name.substring(#, #) do?

Answer 3

Gives the part of the string starting from index # and excluding index #.

Question 4

What does name.substring(#) do?

Answer 4

Returns the part of the string starting from index #.

Question 5

How does compareTo work?

Answer 5

• 0 if equal
• negative if a < b
• positive if a > b
• a < A
• test < testing
• testing > test
• A < B
• a < b

Question 6

What does String.valueOf() do?

Answer 6

Converts int to String

Question 7

What does Integer.parseInt(“#”) do?

Answer 7

Converts the string to integer