Vivil - 1 year ago 70

PHP Question

I have two arrays, Array 1 being a donor array which has a series of values (not necessarily equal values as in my example). Array 2 is the desired result and would store a series of sub arrays with values from Array 1 where each sub array's total sum would not exceed 25. If it does, the excess would get pushed to the next index in Array 2 where the rules would also apply.

**Donor array (Array 1):**

`$a1=array(10,10,10,10,10,10,10,10,10,10);`

`Array`

(

[0] => 10,10,5

[1] => 5,10,10

[2] => 10,10,5

[3] => 5,10,10

)

Here the code I tried but it gets an error:

Notice: Undefined offset:10...etc.

`$a1=array(10,10,10,10,10,10,10,10,10,10);`

$a2=array();

$count=count($a1);

for($i=0;$i<$count;$i++){

$a2count=array_sum($a2);

if($a2count>25){

$i=$i+1;

$a2[$i]=$a1[$i];

}

else{

$a2[$i]=$a1[$i];

}

}

print_r($a2);

I don't know what logic to implement and get result I'm looking for.

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Answer Source

Here you go: The logic is not so hard. Hope it helps.

```
<?php
$a1=array(10,10,10,10,10,10,10,10,10,10);
$a2 = [];
$a3 = [];
$m = 0;
for($i = 0; $i < count($a1); ++$i){
$m += $a1[$i];
if($m > 25){
$n = $m % 25;
if(array_sum($a2) != 25){
$a2[] = $n;
}
$a3[] = implode(',', $a2);
$a2 = [];
$m = $n;
$a2[] = $n;
} else{
$a2[] = $a1[$i];
}
}
$a3[] = implode(',', $a2);
print_r($a3);
?>
```

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