How can you optimize the code provided to handle cases where only specific numbers are missing in the sequence?

To handle cases where only specific numbers are missing in the sequence, we can modify the code to check for the missing numbers based on a predefined list of expected numbers. We can then iterate through this list and check if each number is present in the given array. If a number is missing, we can add it to the list of missing numbers. 

<?php
function findMissingNumbers($arr){
    $expectedNumbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; // Define the expected numbers in the sequence
    $missingNumbers = [];

    foreach($expectedNumbers as $num){
        if(!in_array($num, $arr)){
            $missingNumbers[] = $num;
        }
    }

    return $missingNumbers;
}

$numbers = [1, 2, 4, 5, 6, 8, 10];
$missing = findMissingNumbers($numbers);

echo "Missing numbers: ";
foreach($missing as $num){
    echo $num . " ";
}
?>

Keywords

PHP optimization missing numbers sequence handling

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