recursion_mystery10

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< recursion_mystery9

recursion_mystery11 >

Main Page → Exercises → PHP → Solve an Exercise

Language/Type: PHP recursion recursion mystery

For each call to the following recursive function, write the output that is produced as it would appear on the console.

function recursion_mystery10($x) {
    print("$x ");
    if ($x <= 1) {
        print("END ");
    } elseif ($x % 2 == 0) {
        recursion_mystery10($x / 2);
        print("+ ");
    } else {
        print("[ ");
        recursion_mystery10(3 * $x + 1);
        print("] ");
    }
}

`recursion_mystery10(1);`
`recursion_mystery10(4);`
`recursion_mystery10(3);`

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recursion_mystery10