Java puzzle 06: Controlling loops

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In this Java puzzle we try to control the results of a loop.
If you compile and run this program, it writes 123456 to the standard output.
By adding only one statement to the line 9, the program will write 1346 to the
standard output. What is that statement? More than one solution is possible!

Java puzzle 6: Controlling a loop

Level: Normal

public class Loop
{
  public static void main(String[] args)
  {
    for (int i = 1; i < 7; i++)
    {
      if (i == 2 || i == 5)
      {
        // add your statement here!
      }
      System.out.print(i);
    }
  }
}
  Author: Sar Maroof

Answer explanation

By adding the label continue; the program will skip the values 2 and 5 of the variable i.
Therefore, the program writes 1346. Remeber that by programming, there might be different methods to achieve the same goal. Here you can also use the statement i++; to get the same output.

public class Loop
{
  public static void main(String[] args)
  {
    for (int i = 1; i < 7; i++)
    {
      if (i == 2 || i == 5)
      {
        continue;
      }
      System.out.print(i);
    }
  }
}

 

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Sar Maroof is graduated from HBO Amsterdam "higher professional education". He is a professional computer programming teacher, gives master classes and publishes technical articles. His experience with developing software started from 2001 and he has worked as a software developer for several big as well as small companies and later as a freelancer. He is the author of Java quizmaster and Build a Java application in 7 days.

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