Question

I was recently given a task to accomplish which i failed. I don’t usually ask for logic but today i am compalled to ask.Here is the task.

I am not allowed to use rand() function of php. instead i can use this function.

function getRandom()
{
     return rand(1,5);
}

OK i tried this function but it is bound to return value from 3 to 7.

function getMoreRandom()
{
    $value = getRandom();
    return $value + 2;

}

Now i have to define a php function which can return me random number with the range 1 to 7. How can i do this?

Answer 1

function getMoreRandom()
{
    do {
        $temp = 5 * (getRandom() - 1) + getRandom();
    } while ($temp > 21);

    return $temp % 7 + 1;
}