Showing a percentage between 2 integers

Question

I have a quiz game and i wanna show the percentage of level and maxlevel.

(levelvideo) is my first integer of current level
(QuestionLibraryVideo.mChoices.length) is my max level from length of table..

I try to show this = (levelvideo/QuestionLibraryVideo.mChoices.length)*100 but shows me only zero.

thsekato2.setText(Integer.toString((levelvideo/QuestionLibraryVideo.mChoices.length)*100));

You are dividing two integers which will yield an integer result. Try casting one of your values to a double — Katajun, Feb 22 '18 at 15:45
Possible duplicate of [Division of integers in Java](https://stackoverflow.com/questions/7220681/division-of-integers-in-java) — Selvin, Feb 22 '18 at 15:54

J K · Accepted Answer · 2018-02-22T15:47:05.493

0

IF you divide integer by integer, you will loose decimals after ,.
For example 3/2 is 1, beacuse it's 1,5, so integer have only 1.
Use float or double instead.

 float f1 = levelvideo;
 float f2 = QuestionLibraryVideo.mChoices.length;
 zero.thsekato2.setText(Integer.toString((int)((f1/f2)*100)));

edited Feb 22 '18 at 15:47

answered Feb 22 '18 at 15:45

J K

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so i need to convert this 2 integerts to float? – Marios Feb 22 '18 at 15:46
@Marios see answer now – J K Feb 22 '18 at 15:49
i convert this to integerts to float and works like a charm! thanks so much! – Marios Feb 22 '18 at 15:49

score 0 · Answer 2 · answered Feb 22 '18 at 19:59

If you want to do this only with integer arithmetic, you can multiply the numerator by 100 before dividing. It doesn't have the precision offered by converting to a double, but then, it doesn't have the overhead of type casting either. This would look something like:

thsekato2.setText(Integer.toString((100*levelvideo)/QuestionLibraryVideo.mChoices.length));

Showing a percentage between 2 integers

2 Answers2