Created
February 11, 2020 19:06
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<?php | |
function binarySearch($item, $arr) { | |
$result = false; | |
$start = 0; | |
$end = count($arr) - 1; | |
$iterations = 0; | |
while($start <= $end) { | |
$iterations++; | |
$middle = (int)($start + ($end - $start) / 2); | |
if ( $arr[$middle] === $item ) { | |
$result = true; | |
break; | |
} | |
if ( $arr[$middle] > $item ) { | |
$end = $middle - 1; | |
} else { | |
$start = $middle + 1; | |
} | |
} | |
var_dump($iterations); | |
return $result; | |
} |
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