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Add program from last weekend.

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Hyperling 2024-03-30 11:11:55 -07:00
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commit 376d936819
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#!`which php`
<?php
/* 2024-03-24 Hyperling
// Calculate the optimal amount of spare change to keep
// at any one time which can make any cent value.
*/
echo "Got any spare change?\n";
$pennies = 0; $nickels = 0; $dimes = 0; $quarters = 0;
$maxpennies = 0; $maxnickels = 0; $maxdimes = 0; $maxquarters = 0;
for ($change = 1; $change < 100; $change++) {
$quarters = floor($change / 25);
$remainder = $change % 25;
$dimes = floor($remainder / 10);
$remainder = $remainder % 10;
$nickels = floor($remainder / 5);
$remainder = $remainder % 5;
$pennies = $remainder;
if ($quarters > $maxquarters) {
$maxquarters = $quarters;
echo "Change '{$change}c' required adding another quarter, now need '$maxquarters'.\n";
}
if ($dimes > $maxdimes) {
$maxdimes = $dimes;
echo "Change '{$change}c' required adding another dime, now need '$maxdimes'.\n";
}
if ($nickels > $maxnickels) {
$maxnickels = $nickels;
echo "Change '{$change}c' required adding another nickel, now need '$maxnickels'.\n";
}
if ($pennies > $maxpennies) {
$maxpennies = $pennies;
echo "Change '{$change}c' required adding another penny, now need '$maxpennies'.\n";
}
}
echo "You can pay any cent value with exact change if you have $maxquarters quarter(s), $maxdimes dime(s), $maxnickels nickel(s), and $maxpennies penn(y,ies).\n";
$quarters = $maxquarters * 25;
$dimes = $maxdimes * 10;
$nickels = $maxnickels * 5;
$pennies = $maxpennies;
$change = $quarters + $dimes + $nickels + $pennies;
echo "That means you only ever need to carry {$change}c unless going to multiple locations on foot.\n";
exit(0);