4.3 Solutions

    1.  
      *******
    2.  
      5 seconds
4 seconds
3 seconds
2 seconds
1 seconds
    3.  
      Give me a P
Give me a Q
Give me a R
Give me a S
    4.  
      2
4
16

    1.  
      for (x = 6; x >= 0; x--)
   println("x = " + x + ", 2x + 5 = " + (2*x + 5));
    2.  
      for (x = 0; x <= 30; x += 3)
   println("x = " + x + ", 2x + 5 = " + (2*x + 5));
    3.  
      for (x = -15; x <= 15; x += 5)
   println("x = " + x + ", 2x + 5 = " + (2*x + 5));
    4.  
      for (x = 1; x <= 1024; x *= 2)
   println("x = " + x + ", 2x + 5 = " + (2*x + 5));

    1.  
      float sum = 0;
for (int i = 1; i <= 1000; i++)
  sum += 1.0 / i;
    2.  
      float sum = 0;
for (int i = 100; i <= 5000; i += 100)
  sum += sqrt(i);
    3.  
      long product = 1;
for (int i = 1; i <= 20; i++)
  product *= i;

  1.  
    void setup()
{
   int input = getInt("Please enter an integer.");
   for (int i = 1; i <= input; i++)
      println(input + " x " + i + " = " + (i * input));
}

    1.  
      void setup()
{
   final int UPPER_BOUND = 40;
   println("Number Square Square Root Reciprocal");
   for (int i = 1; i <= UPPER_BOUND; i++)
   {
      print(i + "  ");
      print(i*i + "  ");
      print(nf(sqrt(i),1, 5) + "  ");
      println(nf(1/(float)i,1, 5));
   }
}

    2. Simply add the following at the end of the for loop
      if (i % 5 == 0)
  println();