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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Circular Array Rotation
  5. Discussions

Circular Array Rotation

  • ms_symfony
     + 0 comments

    PHP

    function circularArrayRotation($a, $k, $queries) {
    $result = [];
    
    foreach ($queries as $queryIndex) {
        $lastIterationOffset = $k % count($a); // eliminate iterations over whole array
        $index = $queryIndex - $lastIterationOffset; // calculate initial index before shifting
        if ($index < 0) { // initial index exceeded beggining of array limit
            $index = count($a) + $index; // counting index from the end of array
        }
        $result[] = $a[$index];
    }
    
    return $result;
}