PHP secondLargest Beispiele

Beispiel #1

Datei: pq2.php Projekt: bamcod/PubCodeHub

<?php

/**
 * Find the second largest item in an array
 * 
 * the quick way would be arsort($strings); echo $strings[1];
 */
$strings = array('aaa', 'aaaaaa', 'a', 'a', 'aa', 'aaaa', 'a', 'aaaaaaaaaa', 'aaa');
function secondLargest(array $elements)
{
    if (count($elements) == 1) {
        return $elements[0];
    }
    unset($elements[largestElement($elements)]);
    return $elements[largestElement($elements)];
}
function largestElement(array $elements)
{
    $largest = array('key' => 0, 'size' => 0);
    foreach ($elements as $key => $element) {
        if (strlen($element) > $largest['size']) {
            $largest = array('key' => $key, 'size' => strlen($element));
        }
    }
    return $largest['key'];
}
#arsort($strings);
#echo $strings[1];
echo "\n=========== Exercise 2 ===========\n";
echo secondLargest($strings);
echo "\n=========== End Exercise 2 =======\n";

Beispiel #2

Datei: Find-Second-Largest-Number.php Projekt: ricklamp5/WebLab-PHP-Programs

    <?php 
// Enter various combinations of numbers and letters to test program.
print 'This uses if statements.' . '<br /><br />';
// Calls made to function secondLargest passing in three values.
$result = secondLargest(2, 5, 7);
print 'For input of 2,5,7 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargest(5, 7, 2);
print 'For input of 5,7,2 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargest(7, 2, 5);
print 'For input of 7,2,5 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargest(7, 5, 2);
print 'For input of 7,5,2 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargest(2, 2, 7);
print 'For input of 2,2,7 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargest(2, 5, 'seven');
print 'For input of 2,5,seven ' . 'the answer is ' . $result . '<br /><br /><br />';
print 'This uses an array.' . '<br /><br />';
// Calls made to function secondLargestArray passing in three values.
$result = secondLargestArray(2, 5, 7);
print 'For input of 2,5,7 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargestArray(5, 7, 2);
print 'For input of 5,7,2 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargestArray(7, 2, 5);
print 'For input of 7,2,5 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargestArray(7, 5, 2);
print 'For input of 7,5,2 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargestArray(2, 2, 7);
print 'For input of 2,2,7 ' . 'the answer is ' . $result . '<br /><br />';
$result = secondLargestArray(2, 5, 'seven');
print 'For input of 2,5,seven ' . 'the answer is ' . $result . '<br /><br />';