Android™ How to Program, Second Edition

Methods getMinimum and getMaximum

Methods getMinimum, getMaximum, outputBarChart and outputGrades each loop through array grades by using nested for statements—for example, the nested enhanced for statement from the declaration of method getMinimum (lines 58–67). The outer enhanced for statement iterates through the two-dimensional array grades, assigning successive rows to parameter studentGrades on successive iterations. The square brackets following the parameter name indicate that studentGrades refers to a one-dimensional int array—namely, a row in array grades containing one student’s grades. To find the lowest overall grade, the inner for statement compares the elements of the current one-dimensional array studentGrades to variable lowGrade ...