- var_dump: documentation ( source)
- floor: documentation ( source)
<?php
function intdiv_2($a, $b){
return floor($a / $b);
}
function isBouncy($num) {
if ($num < 100) {
return false;
}
$ni = true;
$nd = true;
$lastDigit = $num % 10;
$num = intdiv_2($num, 10);
while($num != 0) {
$digit = $num % 10;
if ($digit > $lastDigit) {
$nd = false;
}
else if ($digit < $lastDigit) {
$ni = false;
}
$lastDigit = $digit;
$num = intdiv_2($num, 10);
}
return !$ni && !$nd;
}
var_dump(isBouncy(0));
var_dump(isBouncy(10));
var_dump(isBouncy(345));
var_dump(isBouncy(321));
var_dump(isBouncy(384));