AP CS A Midterm Review

• 4 16
• 4 10 16
• 0 6 12 18
• 1 4 7 10 13 16 19

What is output by the code?

• 0

• 1

• 2

• 3

• 4

What is output by the code?

• 0

• 1

• 2

• 3

• 4

• [P, Q, R, s, T]
• [P, Q, s, T, u]
• [P, Q, T, s, u]
• [P, T, s, R, u]

• I)    while(count <= numRolls && Math.random() < 1/6.0)     count++;
• II)    for(int roll = 0; roll < numRolls; roll++)   {     if(Math.random() < 1/6.0)     count++;   }
• III)  for(int roll = 0; roll < numRolls; roll++)   {     if((int)(6 * Math.random() + 1) == 1)     count++;   }
• II and III

• 1  0  0  0  0
  0  1  0  0  0
  0  0  1  0  0
  0  0  0  1  0
  0  0  0  0  1
• 0  0  0  0  1
  0  0  0  1  0
  0  0  1  0  0
  0  1  0  0  0
  1  0  0  0  0
• 0  0  1  0  0
  0  0  1  0  0
  1  1  1  1  1
  0  0  1  0  0
  0  0  1  0  0
• 0  0  0  1  0
  0  0  0  1  0
  0  0  0  1  0
  1  1  1  1  1
  0  0  0  1  0

If you wanted to check to see if two numerical values were equal, which operator would you use?

• =
• !=
• equals
• ==

How would you create a new array of 5 integers?

• int[5] x;
• new int[5] x;
• int[] x = new int[5];
• int x = new int[5];

How would you create a new array of 3 Strings?

• String[3];
• new String[3];
• String[] x = 3
• String[] x = new String[3];

1. Consider the following code segment.

System.out.println("\"This is my output.\"");

• This is my output.

• "This is my output."

• "\"This is my output.\""

• \"This is my output.\"

• Nothing, it will produce an error.