Chapter 6, Problem 15PE

Program Plan Intro

Program plan:

AsterisksBarChart.java

• Create a class named “AsterisksBarChart”.
  • Define a function named “readinValues”.
    • Create an ArrayList object called “Arrlist”, that will store integer values.
    • Using “while(num >= 0)” loop, checks whether  “num” is greater than or equal to “0” or not .
      • If the condition is true, read and stores the new positive integers into the array list using “add()” method
    • Return “Arrlist”.
  • Define an “int” function named “findLarge”.
    • Declare an integer variable named “larger” and access the list using “get()” method.
    • Using enhanced “for” loop, iterate and find the largest element in the array list.
      • Inside the loop, the conditional statement “if” checks whether “z” is greater than “larger” or not
      • If the condition is true, the maximum value will be stored in the variable “larger”
      • Return “larger”.
  • Define a function named “printBarChart”.
    • Declare an integer variable named “maxvalue” and call the function “findLarge”.
    • Inside the “for” loop,
      • Retrieve the element at a given index using the “get()” method.
      • Next, declare an integer variable named “asterisks” and calculate the number of asterisks based on positive integers and largest value in the array list.
      • At last use “for” loop, to print and display the bar chart of asterisks.
  • Define a main function.
    • Declare an array variable named “numlist” and call the function “readinvalues” to read a sequence of positive integer values.
    • Call the function "printBarChart" and pass “numlist” as parameter for displaying the bar chart of asterisks based on largest value and input values in the array list.