CODEWITHSUNDEEP
javaaverage
Sugarcoder
Sugarcoder

Reputation: 177

Calculating Average After Parsing Integers

This is for Java. I just finished parsing each column from String to int. However, now I am having a tough time figuring out how to calculate each column and finding the average.

For example, this is what I have after I parsed each column: 

int Q1 = Integer.parseInt(columns[1]);

This is what I tried to find the average, but was unsuccessful. 

int Q1s = Q1;


        int i;
        int total = 0;

        for (i = 0; i < 6; i++) {
            total = total + Q1s;
        }

        double avg = total / Q1s;
        return avg;

I know how to find the average the normal way (Example: int Q1[] = {1,2,3};) But it is not the same for parsing an array of integers.

Any hints on how to proceed would be greatly appreciated!

P.S. I don't want the answer...I just want a direction on where to go from here. That is why I didn't put the complete code that I currently have.

Upvotes: 0

Views: 339

Answers (3)

Charu Rajput
Charu Rajput

Reputation: 653

double avg = total / Q1s;

Calculating average is wrong here. It should be 

double avg = total / 6;

It should be divided by the total number of elements here you are using 6 as a constant.

Upvotes: 0

Uma Kanth
Uma Kanth

Reputation: 5629

Your logic to calculate total is wrong. You are not adding all the elements, what you're doing is adding the first element n times.

Assuming Q1 is your array of Strings. 

for(int i = 0; i < Q1.length; ++i)
{
 total += Integer.parseInt(Q1[i]);//this is what you want to do. Parse it here
}
double avg = (double) total / Q1.length;

Upvotes: 3

amit dayama
amit dayama

Reputation: 3326

two things:

1) you should use: 

  double avg = total / <ColumnCount>;

2) you need to casting, So 

  double avg = ((double)total) / <ColumnCount>;

Upvotes: 0

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