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14 lines
370 B
PHP
14 lines
370 B
PHP
function missing_number($num_list)
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{
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// construct a new array
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$new_arr = range($num_list[0],max($num_list));
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// use array_diff to find the missing elements
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return array_diff($new_arr, $num_list);
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}
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print_r(missing_number(array(1,2,3,6,7,8)));
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print_r(missing_number(array(10,11,12,14,15,16,17)));
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?>
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