1. /**
  2. * GradeDistribution.java
  3. * @author Jose M Vidal <jmvidal@gmail.com>
  4. * Created on Feb 9, 2012
  5. *
  6. */
  7. 
  8. public class GradeDistribution {
  10. private int a;
  11. private int b;
  12. private int c;
  13. private int d;
  14. private int f;
  16. public void setAs(int a){
  17. this.a = a;
  18. }
  19. public void setBs(int b){
  20. this.b = b;
  21. }
  22. public void setCs(int c){
  23. this.c = c;
  24. }
  25. public void setDs(int d){
  26. this.d = d;
  27. }
  28. public void setFs(int f){
  29. this.f = f;
  30. }
  31. 
  32. public int getNumGrades(){
  33. return a + b + c + d + f;
  34. }
  36. public String getMedian(){
  37. int midpoint = getNumGrades() / 2;
  38. int count = f;
  39. if (count >= midpoint)
  40. return "F";
  41. count += d;
  42. if (count >= midpoint)
  43. return "D";
  44. count += c;
  45. if (count >= midpoint)
  46. return "C";
  47. count += b;
  48. if (count >= midpoint)
  49. return "B";
  50. return "A";
  51. }
  53. private String getStars(int x){
  54. String result = "";
  55. for (int i=0; i< x; i++)
  56. result += "*";
  57. return result;
  58. }
  60. public String toString() {
  61. return getStars(a) + " A\n" +
  62. getStars(b) + " B\n" +
  63. getStars(c) + " C\n" +
  64. getStars(d) + " D\n" +
  65. getStars(f) + " F\n";
  66. }
  67. 
  68. /**
  69. * @param args
  70. */
  71. public static void main(String[] args) {
  72. GradeDistribution grades = new GradeDistribution();
  73. grades.setAs(4);
  74. grades.setBs(10);
  75. grades.setCs(11);
  76. grades.setDs(1);
  77. grades.setFs(5);
  78. //print a pretty graph
  79. System.out.println(grades);
  80. System.out.println("There are a total of " + grades.getNumGrades() + " grades.");
  81. System.out.println("The median grade is " + grades.getMedian());
  84. grades.setAs(20);
  85. grades.setBs(15);
  86. grades.setCs(10);
  87. grades.setDs(5);
  88. grades.setFs(0);
  89. System.out.println(grades);
  90. System.out.println("There are a total of " + grades.getNumGrades() + " grades.");
  91. System.out.println("The median grade is " + grades.getMedian());
  93. 
  94. }
  95. 
  96. }