Algorithm for distributing red envelopes

Source: Internet
Author: User
Find an algorithm for distributing red envelopes
We've all played with the red envelopes,
is to give a sum, a number of copies, automatically randomly allocate the amount.

The minimum amount is 0.01 yuan.

Seeking algorithm

Function ($ total, $ red packet number) {

。。。

return $ red envelope array;
}
------to solve the idea----------------------
It might be better to change it.
function Distribute ($total, $num) {
$avg = $total/$num;
$r = Array_fill (0, $num, $avg);

for ($i =0; $i < $num; $i +=2) {
$t = rand (1, $AVG * 100)/100;
$r [$i]-= $t;
if ($r [$i] <= 0) $r [$i] = 0.01;
$r [$i +1] + = $t;
}
$r [$num-1] = $total-array_sum (array_slice ($r, 0,-1));
return $r;
}

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