Help with Java Q

Question

2) Write a java program which asks for 10 grades from user. Place the grades in an array called grades. Calculate the maximum , minimum and average using three static methods called min, max and avg. The static methods should be in the same class as the main class and should accept the array as input argument. The methods should return the values of minimum, maximum and average. Display the data and the calculated values. Hint: use for loops in max and min functions. Assume the first value is the maximum or minimum and continue to compare and replace that value ( see similar example in the book or ppt)

Answer 1

import java.util.Scanner;

class GradeCalc

{

public static final int NUM_GRADES=10;

public static double Min(double grades[])

{

double minGrade = grades[0];

for (int iLoop=1; iLoop<NUM_GRADES; iLoop++)

{

if (grades[iLoop]<minGrade)

{

minGrade = grades[iLoop];

}

}

return(minGrade);

}

public static double Max(double grades[])

{

double maxGrade = grades[0];

for (int iLoop=1; iLoop<NUM_GRADES; iLoop++)

{

if (grades[iLoop]>maxGrade)

{

maxGrade = grades[iLoop];

}

}

return(maxGrade);

}

public static double Avg(double grades[])

{

double gradeSum=0;

for (int iLoop=0; iLoop<NUM_GRADES; iLoop++)

{

gradeSum += grades[iLoop];

}

return(gradeSum/NUM_GRADES);

}

public void Go()

{

Scanner scanner = new Scanner(System.in);

double grades[] = new double[NUM_GRADES];

for (int iLoop=0; iLoop<NUM_GRADES; iLoop++)

{

System.out.print(" Please input grade # " + (iLoop+1) + " of " + (NUM_GRADES) + ":>");

grades[iLoop] = scanner.nextDouble();

}

System.out.println(" The min grade is :"+ GradeCalc.Min(grades));

System.out.println(" The max grade is :"+ GradeCalc.Max(grades));

System.out.println(" The average grade is :"+ GradeCalc.Avg(grades));

}

public static void main(String args[])

{

new GradeCalc().Go();

}

}