CS49J

Remember not to create packages. Use the default package

8A

Write a class CircleProcessor which manages an array of Circles. You are given a Circle class.

The constructor of the CircleProcessor takes an array of Circles. The array must contain at least one element

Provide these methods

• An averageArea method that returns the average area of the Circles in the array. Only divide one time
• A method swapMaxAndMin which swaps the largest and smallest elements in the array. Only use one loop
• A method toString which returns the string representation of the underlying array using Arrays.toString

Codecheck URL

8B

You are going to to work with a partially filled array in this problem. Write a class to manage an array of Strings. Call the class WordProcessor. WordProcessor constructor takes no parameters but initializes the array so it can hold 8 elements. Define a constant for 8, perhaps INITIAL_CAPACITY.

Provide methods:

• public void add(String toAdd) adds the given string at the end of the partially filled array.
• public void add(String toAdd, int index) adds the String at the specified index. Grow the array by doubling its size if necessary and then add the element
• public void removeAdjacentDuplicates() If elements at adjacent indexes are equal, remove one
• private void growIfNeeded() checks to see if the array is full. If it is, it doubles the size of the array and copies the elements to a the new array in the same order.
• public String toString() returns a string representation of the array. The string starts with "[" and ends with "]" The elements of the array are separated by commas. There should be no comma at the beginning or end of the list.

Codecheck URL

8C

For this problem you will create a crude temperature map. A TemperatureMap class indicates areas of different temperature by the use of different colors. Our map will represent a square area. The temperatures are contained in a 2d int array. Each element in the array represents the temperature in a square area 20 miles on a side. We assume the temperature is the same through-out the area.

The constructor takes a 2d array of ints as a parameter

Provide these methods:

• public void drawMap() creates a map consisting of colored squares. Each square represents the temperature indicated by an element in the array. There is a one-to-one correspondence between the array elements and the squares on the map. The upper left hand corner of the map is at (0, 0). The squares are 10 px X 10 px. Draw the rows and then the columns
• The color of the square is determined as follows:
  • Color.BLUE if the temperature is less than or equal 32°
  • Color.GREEN if the temperature is greater than to 32° and less than or equal to 50°
  • Color.ORANGE if the temperature is greater 50° but less than or equal to 85°
  • Color.RED if the temperature is greater than 85°
• Write a private helper method to get the color.
• public int maxDifference() gets the difference between the highest and lowest points in the map as a positive number.

The map will look like this

Codecheck URL