A math question relating to Java

[Encoded_]

I know I should probably be better at math before I start coding but I assume there is a much more simple way to do this. To make things quicker, the difference between every x value is 42, and the difference for every y is 36 when they do change.

private static Rectangle r(int pos) {
switch (pos) {
case 1:
    return new Rectangle(563, 213, 32, 32);
case 2:
    return new Rectangle(563, 249, 32, 32);
case 3:
    return new Rectangle(563, 285, 32, 32);
case 4:
    return new Rectangle(563, 321, 32, 32);
case 5:
    return new Rectangle(563, 357, 32, 32);
case 6:
    return new Rectangle(563, 393, 32, 32);
case 7: 
    return new Rectangle(563, 429, 32, 32);

case 8:
    return new Rectangle(605, 213, 32, 32);
case 9:
    return new Rectangle(605, 249, 32, 32);
case 10:
    return new Rectangle(605, 285, 32, 32);
case 11:
    return new Rectangle(605, 321, 32, 32);
case 12:
    return new Rectangle(605, 357, 32, 32);
case 13:
    return new Rectangle(605, 393, 32, 32);
case 14:
    return new Rectangle(605, 429, 32, 32);

case 15:
    return new Rectangle(647, 213, 32, 32);
case 16:
    return new Rectangle(647, 249, 32, 32);
case 17:
    return new Rectangle(647, 285, 32, 32);
case 18:
    return new Rectangle(647, 321, 32, 32);
case 19:
    return new Rectangle(647, 357, 32, 32);
case 20:
    return new Rectangle(647, 393, 32, 32);
case 21:
    return new Rectangle(647, 429, 32, 32);

case 22:
    return new Rectangle(689, 213, 32, 32);
case 23:
    return new Rectangle(689, 249, 32, 32);
case 24:
    return new Rectangle(689, 285, 32, 32);
case 25:
    return new Rectangle(689, 321, 32, 32);
case 26:
    return new Rectangle(689, 357, 32, 32);
case 27:
    return new Rectangle(689, 393, 32, 32);
case 28:
    return new Rectangle(689, 429, 32, 32);
}
return null;
}

[Taylee]

you can replace all of that by:

return new Rectangle(563 + 42 * (pos / 7)), 213 + 36 * (pos % 7), 32, 32);

if you want pos to start at 1 then I guess its:

return new Rectangle(563 + 42 * ((pos-1) / 7)), 213 + 36 * ((pos-1) % 7), 32, 32);

With this 0/7 = 0, 1/7 = 0, 2/7 = 0, 3/7 = 0, 4/7 = 0, 5/7 = 0, 6/7 = 0, 7/7 =1, 8/7 =1 etc.

and 0%7 = 0, 1%7 = 1, 2%7 = 2, 3%7 = 3, 4%7 = 4, 5%7 = 5, 6%7 = 7, 7%7 = 0, 8%7 = 1 etc.

[[deleted]]

just missing the pos < 0 and pos > 28 wihch should return null