How to print sum in decreasing way?

Question

I want to print sum of two numbers like this: 15,14,12,9,5

Answer 1

The de facto way to solve this problem is using a loop structure with good observation on the number pattern.

Can you show us what you've tried so we can guide you from there? 😉

Answer 2

You can use an array as temporary buffer and outputs its contents in reverse later, as follows:

<?php
$a = 5;
$b = 1;
$sum = 0;

// Here we create an empty array to contain
// the $sum values temporarily
$temp = array();

for($a; $a >= $b; $a--)
// Add the $sum into the array
$temp[] = ($sum += $a);

// Output the array contents in reverse
$limit = count($temp);
while($limit--)
echo "$temp[$limit]<br />";

?>

Hth, cmiiw

Answer 3

I solved!

Answer 4

https://code.sololearn.com/wJ10Ibp8HY4f/?ref=app