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PHP Exercises: Find the difference between the largest integer and the smallest integer

PHP: Exercise-64 with Solution

Write a PHP program to find the difference between the largest integer and the smallest integer which are created by 8 numbers from 0 to 9. The number that can be rearranged shall start with 0 as in 00135668.

Input: The difference between the largest integer and the smallest integer.

Pictorial Presentation:

PHP: Find the difference between the largest integer and the smallest integer.

Sample Solution: -

PHP Code:

<?php
fscanf(STDIN, '%d', $n);
for ($i = 0; $i < $n; $i++) {
    fscanf(STDIN, '%s', $s);
    $s = str_split($s);
    rsort($s);
    $a = (int) implode('', $s);
    sort($s);
    $b = (int) implode('', $s);
    echo "Difference between the largest integer and the smallest integer:\n";
    echo $a - $b;
    echo PHP_EOL;
}
?>

Sample Input:
1
34568729

Sample Output: 

Difference between the largest integer and the smallest integer:
75308643

Flowchart:

Flowchart: Find the difference between the largest integer and the smallest integer.

PHP Code Editor:

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Previous: Write a PHP program to replace a string "Python" with "PHP" and "Python" with " PHP" in a given string.
Next: Write a PHP program to compute the sum of first n given prime numbers.

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PHP: Tips of the Day

Returns all elements in an array except for the first one

Example:

<?php
function tips_tail($items)
{
  return count($items) > 1 ? array_slice($items, 1) : $items;
}

print_r(tips_tail([1, 5, 7]));
?>

Output:

Array
(
    [0] => 5
    [1] => 7
)