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<?php function find_missing($numeros) { $numeros = array_filter(array_unique($numeros), function ($v) { return $v >= 0; }); sort($numeros); for ($i = 1; $i < count($numeros); $i++) { if ($numeros[$i] != $numeros[$i-1] + 1) { return $numeros[$i-1] + 1; } } // all numbers consecutive return false; } $m = find_missing(array(1, 3, 6, 4)); echo ($m === false) ? "array is consecutive\n" : "$m is the first missing number\n"; $m = find_missing(array(-1,9, 0, 8)); echo ($m === false) ? "array is consecutive\n" : "$m is the first missing number\n"; $m = find_missing(array(1,2,3,4,1,2,3,5,6,3,13,4,6,5, -1, -2)); echo ($m === false) ? "array is consecutive\n" : "$m is the first missing number\n";
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
2 is the first missing number 1 is the first missing number 7 is the first missing number
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 2 is the first missing number 1 is the first missing number 7 is the first missing number
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/9Qfpp on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/9Qfpp on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/9Qfpp on line 3
Process exited with code 255.

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