Warmup Question:
What happens when you try to compile and run this code?

public static int foo(int x) {
  for (int i = 0; i <= x; i++) {
    if (x % i == 0) {
      return i;
    }
  }
}

White: This code will not compile.
Blue: This code will result in a run-time exception.
Green: This code will return the first factor of x.
Pink: This code will always return 0.
Yellow: This code will always return 1.

Answer: White

Q1. Starting with an empty Vector of size 3, what would the array look 
    like after executing the following. Assume that removeElementAt(int 
    index) removes the element at the specified index, insertElementAt
    (Object o, int index) adds the element at the specified index. Also 
    assume that capacity doubles when the array size needs to be 
    increased.

Vector v = new Vector(3);
v.addElement("a");
v.addElement("b");
v.insertElementAt("c", 1);
v.addElement("d");
v.removeElementAt(2);

White:
 ___  ___  ___  ___  ___  ___ 
|   ||   ||   ||   ||   ||   |
|_|_||_|_||_|_||_|_||_|_||_|_|
  |    |    |    |    |    |  
  V    V    V    V    V    V  
 "a"  "c"  "b"  "d"   /    /

Blue:
 ___  ___  ___  ___  ___  ___ 
|   ||   ||   ||   ||   ||   |
|_|_||_|_||_|_||_|_||_|_||_|_|
  |    |    |    |    |    |  
  V    V    V    V    V    V  
 "a"  "c"  "d"   /    /    /

Green:
 ___  ___  ___  ___  ___  ___ 
|   ||   ||   ||   ||   ||   |
|_|_||_|_||_|_||_|_||_|_||_|_|
  |    |    |    |    |    |  
  V    V    V    V    V    V  
 "a"  "c"   /    /    /    /

Pink:
 ___  ___  ___ 
|   ||   ||   |
|_|_||_|_||_|_|
  |    |    |  
  V    V    V  
 "a"  "c"   / 

Yellow:
 ___  ___  ___  ___  ___  ___ 
|   ||   ||   ||   ||   ||   |
|_|_||_|_||_|_||_|_||_|_||_|_|
  |    |    |    |    |    |  
  V    V    V    V    V    V  
 "a"  "b"  "c"  "d"   /    /


Answer: Blue