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<?php $arr = [20, 1, 5, 10, 7, 16]; $keys = array_keys($arr); $nearest = max($arr) - min($arr) + 1; $result = []; for($key = 0, $length = count($arr); $key < $length; $key++){ for($innerKey = $key + 1; $innerKey < $length; $innerKey++){ if( ($diff = abs($arr[$keys[$key]] - $arr[$keys[$innerKey]])) < $nearest){ $result = [$arr[$keys[$key]], $arr[$keys[$innerKey]]]; $nearest = $diff; } } } print_r($result); ?>
Output for 5.6.38, 7.0.33, 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Array ( [0] => 5 [1] => 7 )
preferences:
147.98 ms | 408 KiB | 5 Q