
Title:
total score for all students  Intro to Java Programming

Description:

I'm going to show you two ways to do this.

We know that for each student, we want to write

that student's total into an array and return it. We

also know exactly how big we want the array to

be because we want one for each student. So I

want numStudents items in my array. Now, for all of

the student from the 0 student to the last student

Going up one at a time. I want to fill that student's

spot in the array of totals with that

student's total. I already have a method that calculates

this. So, I can use totalForStudent. And then,

when I've done that for all of the students,

I can return the totals. Looks like I forgot to

call it totals. Let's check that it works. I'll run

the tester, and it looks like it's got what I

expecting. Now, we could use nested for loops. I'll still

want all of my totals, and I'll still want to

return them, but let's think about solving this problem for

just one student, for each topic, starting with the first

one. And we going up to the number of topics,

one at a time. I'll add the score

for that topic to that student's total, let's say

for now I'm thinking about student 1. To

calculate total for student 1, I'll start at 0

and for each topic And want to add

that student's grade, in that topic. Then, once I

have the student total in my larger array

totals, I'll set the total for that student to

be the student total that I just calculated.

So this is what I do for one student.

And now, I want to do that for every single

student. So that all of the spaces in total

gets filled, so I will indent that a little

bit and now for each student starting with the

zeroth one so we don't need this line anymore

I will go up to the number of students

one at a time. I will do all of these steps. So

now the interloop is calculating the student totals and the outer loop is

storing the student totals in totals. So now we're fix up syntax errors. And

this way should work just like the last one. I'll

run it to make sure and it looks like it's

still good. Hopefully the number of values you see here.

Makes it obvious why it would be be nice as

a teacher, have a computer do this for you.