@ 2018-01-26T15:57:18Z <?php
test(2000);
test(1845);
test(2340);
test(3000);
// Examples:
// Door 2000 1845 3000
// 615mm panel 1 3 5
// 495mm panel 3 0 0
// panel loss 100 0 75
function calcOptimalPanels ($doorHeight) {
$bigHeight = 615;
$smallHeight = 495;
$bigFit = floor($doorHeight / $bigHeight);
$smallFit = floor($doorHeight / $smallHeight);
$options = [];
for ($big = 0; $big <= $bigFit; $big++) {
for ($small = 0; $small <= $smallFit; $small++) {
$waste = $bigHeight * $big + $smallHeight * $small - $doorHeight;
if ($waste === 0) // Get first combination without waste
return getFormattedResult($big, $small, $waste);
if ($waste < 0) // Omit combinations smaller then door
continue;
$options[$waste] = getFormattedResult($big, $small, $waste);
}
}
$minWaste = min(array_keys($options));
return $options[$minWaste];
}
function getFormattedResult($big, $small, $waste) {
return ['615mm' => $big, '495mm' => $small, 'waste' => $waste];
}
function test($doorHeight) {
echo $doorHeight . ': ' . json_encode(calcOptimalPanels($doorHeight)) . "\n";
}
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Output for 5.6.0 - 5.6.40 , 7.0.0 - 7.0.33 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.4 , 8.3.6 2000: {"615mm":1,"495mm":3,"waste":100}
1845: {"615mm":3,"495mm":0,"waste":0}
2340: {"615mm":3,"495mm":1,"waste":0}
3000: {"615mm":1,"495mm":5,"waste":90}
Output for 8.3.5 Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
2000: {"615mm":1,"495mm":3,"waste":100}
1845: {"615mm":3,"495mm":0,"waste":0}
2340: {"615mm":3,"495mm":1,"waste":0}
3000: {"615mm":1,"495mm":5,"waste":90}
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222.12 ms | 402 KiB | 290 Q