Announcements

1
Announcements Review

• Last Time basic type arrays
• // apple inventory
• int inventory 10, 20, 30
• String names McIntosh, Gala, Fuji)
• max 0
• for (int i 0 i lt names.length i)
• System.out.println(namesi)
• if (inventorymax lt inventoryi)
• max i
• System.out.println (Max inventory of
  namesmax of inventorymax)

• Announcements
• Lab 4 FlightReservation
• Defining classes
• Due
• Thursday 10pm
• Exam
• 2/28 530-730pm
• GEO 2.216

2
Operations Arrays

• int appleInventory 3, 10, 99
• appleInventory -gt

0 1 2
// operations on arrays of integers int i
inventory0 inventory1 30 inventory2 -
2 inventory2 inventory22 Arrays.sort(inve
ntory)
3
Visualizing Arrays

• String appleNames "McIntosh", "Golden
  Delicious", "Granny Smith"
• appleNames -gt

4
Strings vs Array of Strings

• String myApples new String("apples")
• String myApples -gt

0 1 2 3 4 5
// operations on string objects char c1
myApples.charAt(5) int position
myApples.indexOf(e) String sub
myApples.substring(0, 3) String sup
sub.concat(myApples) boolean same
sup.equals(sub)
// operations on string objects in an
array String names (Grapple, Red
Delicious, Fuji) char c1
names1.charAt(5) int position
names1.indexOf(e") String sub
names1.substring(0, 3) String sup
sub.concat(names1) boolean same
sup.equals(sub)
5
More Questions?