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