Question

Suppose i have an array

$x = (31,12,13,25,18,10);

I want to reduce this array in such a way that the value of each array element is 32.
so after work my array will become

$newx = (32,32,32,13);

I have to generate this array in such a way the sum of array values is never greater than 32. so to create first value, I will reduce 1 from second index value i.e. 12, so the second value will become 11 and first index value will become 31+1 = 32. This process should continue so that each array value becomes equal to 32.

Answer 1

It’s easiest to use some basic math:

$input = array(31,12,13,25,18,10);
$val = 32;                                // set the value: 32
$sum = array_sum($input);                 // calculate sum: 109
$output = array_fill(0, $sum/$val, $val); // fill in int(109/32) = 3 reps of 32
$rest = $sum % $val;                      // however, 109*32 = 96,
if ($rest) {                              // so if there is a rest (here 13)
    $output[] = $rest;                    // we add the remaining 13
}

Final $output:

array (
  0 => 32,
  1 => 32,
  2 => 32,
  3 => 13,
)