recursion_mystery3

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< recursion_mystery2

recursion_mystery4 >

Main Page → Exercises → PHP → Solve an Exercise

Language/Type: PHP recursion recursion mystery

For each of the calls to the following recursive function below, indicate what output is produced:

function recursion_mystery3($n) {
    if ($n < 0) {
        return -recursion_mystery3(-$n);
    } elseif ($n < 10) {
        return ($n + 1) % 10;
    } else {
        return 100 * recursion_mystery3(intval($n / 10)) + ($n + 1) % 10;
    }
}

`recursion_mystery3(7)`
`recursion_mystery3(42)`
`recursion_mystery3(385)`
`recursion_mystery3(-790)`
`recursion_mystery3(89294)`

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recursion_mystery3