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  1. <?php
  2.  
  3. header('Content-Type: text/plain; charset=UTF-8');
  4.  
  5. $amount = 238800;
  6.  
  7. $bills = array(
  8.     5000    => 50,
  9.     1000    => 100,
  10.     500     => 100,
  11.     100     => 100
  12. );
  13.  
  14. /* Считаем количество денег в банкомате */
  15. function getBillSum($bills)
  16. {
  17.     $BillSum = '';
  18.  
  19.     foreach ($bills as $billValue => $billAmount) {
  20.         $BillSum += $billValue * $billAmount;
  21.     }
  22.  
  23.     return $BillSum;
  24. }
  25.  
  26. /* Проверяем возможность выдачи */
  27. function checkPaymentPossibility($amount, $billSum)
  28. {
  29.     $error = '';
  30.  
  31.     if ($billSum < $amount) {
  32.         $error = "в банкомате недостаточно купюр";
  33.     }
  34.  
  35.     if ($amount <= 0) {
  36.         $error = "сумма должна быть больше нуля";
  37.     }
  38.  
  39.     if (($amount % 100) != 0) {
  40.         $error = "сумма должна быть кратна ста";
  41.     }
  42.  
  43.     if (!empty($error)) {
  44.         return "Выдача невозможна: $error";
  45.     }
  46.  
  47.     return TRUE;
  48. }
  49.  
  50. function giveCash($amount, $bills)
  51. {
  52.     $result = '';
  53.  
  54.     foreach ($bills as $billValue => $billAmount) {
  55.         $billPaymentAmount = floor($amount / $billValue);
  56.  
  57.         if ($billPaymentAmount > $billAmount) {
  58.             $billPaymentAmount = $billAmount;
  59.         }
  60.  
  61.         $amount -= $billPaymentAmount * $billValue;
  62.  
  63.         $result .= "{$billPaymentAmount}x{$billValue} ";
  64.     }
  65.  
  66.     return "$result";
  67. }
  68.  
  69. function processATMRequest ($amount, $bills)
  70. {
  71.     $result = '';
  72.     $billSum = getBillSum($bills);
  73.  
  74.     $errors = checkPaymentPossibility($amount, $billSum);
  75.  
  76.     if ($errors !== TRUE) {
  77.         return $errors;
  78.     }
  79.  
  80.     $cash = giveCash($amount, $bills);
  81.  
  82.     $result .= "Сумма: $amount\n";
  83.     $result .= "Выдача возможна, число купюр: $cash\n";
  84.  
  85.     return $result;
  86.  
  87. }
  88.  
  89. echo processATMRequest($amount, $bills);
Success #stdin #stdout 0.01s 20568KB
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Сумма: 238800
Выдача возможна, число купюр: 47x5000 3x1000 1x500 3x100
https://ideone.com/eVngEn
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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