Chapter 9, Problem 12PP

Program Plan Intro

Modified version of “display()” method

Program plan:

• In a file “Sequence .java”,
  • Create a package.
  • Create an interface “Sequence”,
    • Declare the method “next()”.
• In a file “RandomSequence .java”,
  • Create a package.
  • Import necessary package.
  • Create a class “RandomSequence”,
    • Define the method “next()”,
      • Create “Random” object.
      • Return the random number.
• In a file “SquareSequence .java”,
  • Create a package.
  • Create a class “SquareSequence”,
    • Declare the variable.
    • Define the method “next()”,
      • Increment the variable.
      • Return the multiplied value.
• In a file “LastDigitDistribution .java”,
  • Create a package.
  • Create a class “LastDigitDistribution”,
    • Declare the array for counter.
    • Define the constructor,
      • Set the counter array.
        • Define the method “process()”,
        • • Create loop till the value to be processed,
            • Assign the value returned from “next()”.
            • Compute the last digit.
            • Increment the last value in the array.
        • Define the method “display()”,
        • • Assign the value returned from “maxCounter()”.
          • Compute the scale.
          • Create loop for “10” times,
            • Print the position.
            • Compute the number of starts.
            • Create loop till number of starts,
              • Print start.
                • Print new line.
        • Define the method “maxCounter()”,
        • • Set the first array value as the maximum.
          • Execute loop for “10” times,
            • Check whether the array value is greater than the maximum,
              • Assign the array value to the maximum.
          • Return maximum.
• In a file “SequenceTest.java”,
  • Create a package.
  • Create a class “SequenceTest”,
    • Define the method “main()”
      • Create object for “LastDigitDistribution”.
      • Call the method “process()”.
      • Call the method “display()”
      • Print new line.
      • Create another object for “LastDigitDistribution”.
      • Call the method “process()”.
      • Call the method “display()”.