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- <?php
- /*
- * By adding type hints and enabling strict type checking, code can become
- * easier to read, self-documenting and reduce the number of potential bugs.
- * By default, type declarations are non-strict, which means they will attempt
- * to change the original type to match the type specified by the
- * type-declaration.
- *
- * In other words, if you pass a string to a function requiring a float,
- * it will attempt to convert the string value to a float.
- *
- * To enable strict mode, a single declare directive must be placed at the top
- * of the file.
- * This means that the strictness of typing is configured on a per-file basis.
- * This directive not only affects the type declarations of parameters, but also
- * a function's return type.
- *
- * For more info review the Concept on strict type checking in the PHP track
- * <link>.
- *
- * To disable strict typing, comment out the directive below.
- */
- declare(strict_types=1);
- class mapping
- {
- public int $n;
- public string $lit;
- public function __construct(int $n, string $lit)
- {
- $this->n = $n;
- $this->lit = $lit;
- }
- }
- function toRoman(int $number): string
- {
- $literals = [
- new mapping(10_00, "M"),
- new mapping(9_00, "CM"),
- new mapping(5_00, "D"),
- new mapping(4_00, "CD"),
- new mapping(1_00, "C"),
- new mapping(90, "XC"),
- new mapping(50, "L"),
- new mapping(40, "XL"),
- new mapping(10, "X"),
- new mapping(9, "IX"),
- new mapping(5, "V"),
- new mapping(4, "IV"),
- new mapping(1, "I"),
- ];
- $roman = "";
- foreach ($literals as $mapping) {
- while ($number >= $mapping->n) {
- $roman .= $mapping->lit;
- $number -= $mapping->n;
- }
- }
- return $roman;
- }
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