Returns the number of integers within the range

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avaterera
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Returns the number of integers within the range

Postby avaterera » Sun Jun 09, 2013 12:33 am

Hi. Can anyone help me with that?

function myfunc($A,$B,$K);

that, given three integers A, B and K, returns the number of integers within the range [A..B] that are divisible by K, i.e.:
{ i : A ≤ i ≤ B, i mod K = 0 }
For example, for A = 6, B = 11 and K = 2, your function should return 3, because there are three numbers divisible by 2 within the range [6..11], namely 6, 8 and 10.



A is an integer within the range [0..2,000,000,000];
B is an integer within the range [0..2,000,000,000];
K is an integer within the range [1..2,000,000,000];
A ≤ B.

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