CODEWITHSUNDEEP
javaarrays
Steve
Steve

Reputation: 117

Adding Two Elements in an Array (Java)

I need to write a method that adds the two last elements of two arrays together and add the sum on another array. But if the two elements are more than 10, then I would need to carry that number to the next array.

This program should be similar to what an odometer does.

Here is my sample code.

int [] sum(int []number1, int []number2)
{   
    int [] total;
    int carry = 0;
    for ( int k = numbers1 - 1; k >= 0; k++)
    {
        sum = number1[k] + number2[k] + carry;
        carry = sum/10;
        total[k] = sum
    }
    return total;
}

An example output would be:

0 1 2 3 4

0 8 9 9 9

4 5 7 0 3

5 4 7 0 2

So the top array is just a visual aid that tells where the position for the number is. The program is suppose to add the next two arrays together. i.e. 9 + 3 = 12 Since 12 is above 9, it carries over the 10 to the next set of arrays, that is why the third array only has a 2 in its place, and that is why the next array is 9 + 0 = 0; because the 10 was carried over.

I am not sure why my code won't work. I don't get the right numbers. Could anyone give any hints or solution to the problem?

-Thanks

Upvotes: 0

Views: 1241

Answers (1)

M.Sameer
M.Sameer

Reputation: 3151

I assume numbers1 is the number of elements in the array. In this case it should be k-- instead of k++ because you are starting from the last element and moving backword.

Upvotes: 1

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