exercice1_solution.php

<?hh

// Exercice 1

$string = file_get_contents("dictionnaire.txt", FILE_USE_INCLUDE_PATH);
$dico = explode("\n", $string);

// How many words this dictionary contains?

echo count($dico); // answer: 336532

// How many words have exactly 15 characters?

$words_15 = array();
foreach ($dico as $word) {
  if (strlen($word) == 15) {
    array_push($words_15, $word);
  }
}
echo count($words_15); // answer: 12298
echo $a;

// How many words containing the letter ‘w’?

$words_w = array();
foreach ($dico as $word) {
  if (strpos($word, "w") !== false) {
    array_push($words_w, $word);
  }
}
echo count($words_w); // answer: 537

// How many words end with the letter ‘q’?

$words_q = array();
foreach ($dico as $word) {
  if (substr($word, -1) == "q") {
    array_push($words_q, $word);
  }
}
echo count($words_q); // answer: 8