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  1. <?php
  2.  
  3. header('Content-Type: text/plain; charset=UTF-8');
  4.  
  5. $amount = 987800;
  6.  
  7. $bills = array(
  8.     5000    => 120,
  9.     2000    => 64,
  10.     1000    => 360,
  11.     500     => 1500,
  12.     200     => 230,
  13.     100     => 350
  14. );
  15.  
  16. /* Считаем количество денег в банкомате */
  17. function getBillSum($bills)
  18. {
  19.     $BillSum = '';
  20.  
  21.     foreach ($bills as $billValue => $billAmount) {
  22.         $BillSum += $billValue * $billAmount;
  23.     }
  24.  
  25.     return $BillSum;
  26. }
  27.  
  28. /* Проверяем возможность выдачи */
  29. function checkPaymentPossibility($amount, $bills)
  30. {
  31.     $error = '';
  32.  
  33.     $billSum = getBillSum($bills);
  34.  
  35.     if ($billSum < $amount) {
  36.         $error = "в банкомате недостаточно купюр";
  37.     }
  38.  
  39.     if ($amount <= 0) {
  40.         $error = "сумма должна быть больше нуля";
  41.     }
  42.  
  43.     if (($amount % 100) != 0) {
  44.         $error = "сумма должна быть кратна ста";
  45.     }
  46.  
  47.     if (!empty($error)) {
  48.         return "Выдача невозможна: $error";
  49.     }
  50.  
  51.     return TRUE;
  52. }
  53.  
  54. function giveCash($amount, $bills)
  55. {
  56.     $result = '';
  57.  
  58.     foreach ($bills as $billValue => $billAmount) {
  59.         $billPaymentAmount = floor($amount / $billValue);
  60.  
  61.         if ($billPaymentAmount > $billAmount) {
  62.             $billPaymentAmount = $billAmount;
  63.         }
  64.  
  65.         $amount -= $billPaymentAmount * $billValue;
  66.  
  67.         $result .= "{$billPaymentAmount}x{$billValue} ";
  68.     }
  69.  
  70.     return $result;
  71. }
  72.  
  73. function processATMRequest ($amount, $bills)
  74. {
  75.     $result = '';
  76.  
  77.     $errors = checkPaymentPossibility($amount, $bills);
  78.  
  79.     if ($errors !== TRUE) {
  80.         return $errors;
  81.     }
  82.  
  83.     $cash = giveCash($amount, $bills);
  84.  
  85.     $result .= "Сумма: $amount\n";
  86.     $result .= "Выдача возможна, число купюр: $cash\n";
  87.  
  88.     return $result;
  89.  
  90. }
  91.  
  92. echo processATMRequest($amount, $bills);
Success #stdin #stdout 0.01s 20520KB
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Standard input is empty
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Сумма: 987800
Выдача возможна, число купюр: 120x5000 64x2000 259x1000 1x500 1x200 1x100
https://ideone.com/QLncGJ
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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