Question

Hello people I have something like this
Two integers for example :

int priceSell = 10;
int priceBuy = 5;

how can I check if the range is no more than 10 % between those numbers ?

Answer 1

int priceSell = 10;
int priceBuy = 5;
if (Math.abs(priceSell-priceBuy)>(priceSell/10))
    System.out.println("the price isn't within 10%");
else
    System.out.println("the price is within 10%");

-No division by 0

By the way, this answer makes sure the buy price is within 10% of the sell price. The other answer makes sure the sell price is within 10% of the buy price.
And yes, that matters. 90 is within 10% of 100, but 100 isn’t within 10% of 90.(10% range of 100 is 90-110. 10% range of 90 is 81-99)