Miscellany

/** * This class.... * * @author Bill Kukowski */class Problems {	public Problems()	{		//generates first array of fractions		private int[][] fractionGroup1 = new int[2][10];		for (int r=0;r<2;r++)		{			for (int c=0;c<fractionGroup1[r].length;c++)			{				fractionGroup1[r][c] = ( (int) (Math.random() * 9) + 1 );			}		}				//generates second arrray of fractions		private int[][] fractionGroup2 = new int[2][10];		for (int r=0;r<2;r++)		{			for (int c=0;c<fractionGroup2[r].length;c++)			{				fractionGroup2[r][c] = ( (int) (Math.random() * 9) + 1 );			}		}				// generates array of operations		private int[] operations = new int[10];				for (int i = 0;i < operations.length;i++)		{			operations[i] = ( (int) (Math.random() * 4) + 1 );		}				//generates answers for each problem				private float[]	answers = new float[10];				private float tmpNum1 = 0;		private float tmpNum2 = 0;		for (int i = 0;i < 10;i++)		{			tmpNum1 = fractionGroup1[0][i] / fractionGroup1[1][i];			tmpNum2 = fractionGroup2[0][i] / fractionGroup2[1][i];						switch (operations[i])			{				case 1: answers[i] = tmpNum1 / tmpNum2;					break;				case 2: answers[i] = tmpNum1 * tmpNum2;					break;				case 3: answers[i] = tmpNum1 + tmpNum2;					break;				case 4: answers[i] = tmpNum1 - tmpNum2;					break;									}		}			//returns numerator of 1st number		public int getNumerator1(int problemNum)		{			return fractionGroup1[0][problemNum];		}		//reutrns numerator of 2nd number		public int getNumerator2(int problemNum)		{			return fractionGroup2[0][problemNum];		}		//returns operation as string		public String getOperation(int problemNum)				public double getGrade(int index)			{				return homeworkGrades[index];			}			{			String tmpOperation = "";					switch (operations[problemNum])			{				case 1: tmpOperation = "/";					break;				case 2: tmpOperation = "*";					break;				case 3: tmpOperation = "+";					break;				case 4: tmpOperation = "-";					break;				}			return tmpOperation;		}		//returns denominator of 1st number		public int getDenominator1(int problemNum)		{			return fractionGroup1[1][problemNum];		}		//reurns denominator of 2nd numer		public int getDenominator2(int problemNum)		{			return fractionGroup2[1][problemNum];		}		//returns answer for problem.		public float getAnswer(int problemNum)		{			return answers[problemNum];		}	}}