Programming Exercises:
1. Write a method, reverseDigit, that takes an integer as a parameter and returns the
number with its digits reversed. For example, the value of reverseDigit(12345) is
54321. Also, write a program to test your method.
2. Write a program that reads a student’s name together with his or her test scores.
The program should then compute the average test score for each student and
assign the appropriate grade. The grade scale is as follows: 90-100,A; 80-89,B;
70-79,C; 60-69,D; 0-59,F.
Your program must use the following methods:
a. A value-returning method, calculateAverage, to determine and return the
average of five test scores for each student. Use a loop to read and sum the
five test scores. (This method does not output the average test score. That task
must be done in the method main.)
b. A value-returning method, calculateGrade, to determine and return each
student’s grade. (This method does not output the grade. That task must be
done in the method main.)
3. Write a method int count_vowels(String str) that returns a count of all vowels in
the string str. Vowels are the letters a, e, i, o, and u, and their upper case variants.
4. solve the following problems from the textbook chapter 6:
2, 3, 4,5, 6, 10, 38
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