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Untitled

MartinGeorgiev Oct 22nd, 2018 72 Never
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  1. <?php
  2. $input = explode(" ", readline());
  3.  
  4. while(1) {
  5.     $command = explode(" ", readline());
  6.     if($command[0] == "end") {
  7.         break;
  8.     }
  9.     if($command[0] == "exchange") {
  10.         if($command[1] >= 0 && $command[1] < count($input) ) {
  11.             $input = exchange($input, $command[1]);
  12.  
  13.         } else {
  14.             echo "Invalid index" . PHP_EOL;
  15.         }
  16.     }
  17.     if($command[0] == "max") {
  18.         echo findMax($input, $command[1]) . PHP_EOL;
  19.     }
  20.     if($command[0] == "min") {
  21.         echo findMin($input, $command[1]) . PHP_EOL;
  22.     }
  23.     if($command[0] == "first") {
  24.         echo firstElements($input, $command) . PHP_EOL;
  25.     }
  26.     if($command[0] == "last") {
  27.         echo lastElements($input, $command) . PHP_EOL;
  28.     }
  29. }
  30. echo "[" . implode(", ", $input) . "]";
  31.  
  32. function exchange($arr = array(), $index) {
  33.     $firstPart = array_slice($arr, 0, $index + 1);
  34.     $secondPart = array_slice($arr, $index + 1);
  35.     return array_merge($secondPart, $firstPart);
  36. }
  37. function lastElements($arr = array(), $command = array()) {
  38.     $count = $command[1];
  39.     if($count > count($arr)) {
  40.         return "Invalid count";
  41.     } else {
  42.         if($command[2] == "odd") {
  43.             $result = array_filter($arr, function ($input) {return $input & 1;});
  44.         } else {
  45.             $result = array_filter($arr, function ($input) {return !($input & 1);});
  46.         }
  47.         $result = array_slice($result, -$count);
  48.         return "[" . implode(", ", $result) . "]";
  49.     }
  50. }
  51. function firstElements($arr = array(), $command = array()) {
  52.     $count = $command[1];
  53.     if($count > count($arr)) {
  54.         return "Invalid count";
  55.     } else {
  56.         if($command[2] == "odd") {
  57.             $result = array_filter($arr, function ($input) {return $input & 1;});
  58.         } else {
  59.             $result = array_filter($arr, function ($input) {return !($input & 1);});
  60.         }
  61.         $result = array_slice($result, 0, $count);
  62.         return "[" . implode(", ", $result) . "]";
  63.     }
  64. }
  65. function findMin($arr = array(), $type) {
  66.     $minOdd = PHP_INT_MAX;
  67.     $minEven = PHP_INT_MAX;
  68.     for($i = 0; $i < count($arr); $i++) {
  69.         if($arr[$i] % 2 != 0 && $arr[$i] <= $minOdd) {
  70.             $minOdd = $arr[$i];
  71.         } else if($arr[$i] % 2 == 0 && $arr[$i] <= $minEven) {
  72.             $minEven = $arr[$i];
  73.         }
  74.     }
  75.     if($type == "odd") {
  76.         $arr_keys = array_keys($arr, $minOdd);
  77.         $minOddIndex = array_pop($arr_keys);
  78.         if($minOddIndex !== false) {
  79.             return $minOddIndex;
  80.         } else {
  81.             return "No matches";
  82.         }
  83.     } else {
  84.         $arr_keys = array_keys($arr, $minEven);
  85.         $minEvenIndex = array_pop($arr_keys);
  86.         if($minEvenIndex) {
  87.             return $minEvenIndex;
  88.         } else {
  89.             return "No matches";
  90.         }
  91.     }
  92.  
  93. }
  94. function findMax($arr = array(), $type) {
  95.     $maxOdd = PHP_INT_MIN;
  96.     $maxEven = PHP_INT_MIN;
  97.     for($i = 0; $i < count($arr); $i++) {
  98.         if($arr[$i] % 2 != 0 && $arr[$i] > $maxOdd) {
  99.             $maxOdd = $arr[$i];
  100.         } else if($arr[$i] % 2 == 0 && $arr[$i] > $maxEven) {
  101.             $maxEven = $arr[$i];
  102.         }
  103.     }
  104.     if($type == "odd") {
  105.         $arr_keys = array_keys($arr, $maxOdd);
  106.         $maxOddIndex = array_pop($arr_keys);
  107.         if($maxOddIndex !== false) {
  108.             return $maxOddIndex;
  109.         } else {
  110.             return "No matches";
  111.         }
  112.     } else {
  113.         $arr_keys = array_keys($arr, $maxEven);
  114.         $maxEvenIndex = array_pop($arr_keys);
  115.         if($maxEvenIndex) {
  116.             return $maxEvenIndex;
  117.         } else {
  118.             return "No matches";
  119.         }
  120.     }
  121.  
  122. }
  123. ?>
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