median of two sorted arrays

Question

My question is with reference to Method 2 of this link. Here two equal length sorted arrays are given and we have to find the median of the two arrays merged.

Answer 1

PHP Solution:

function Solve( $aArrayOne, $aArrayTwo )
{
    // Base case
    if( empty( $aArrayOne ) || empty( $aArrayTwo ) )
    {
        return false;
    }
    $iCountOne      = count( $aArrayOne );
    $iCountTwo      = count( $aArrayTwo );

    // Single value arrays base case
    if( $iCountOne === 1 && $iCountOne === $iCountTwo )
    {
        return ( $aArrayOne[ 0 ] + $aArrayTwo[ 0 ] ) / 2;
    }

    $iTotalElements = $iCountOne + $iCountTwo;
    $iHalfElements = floor( $iTotalElements / 2 );
    $aPartial       = [];
    $n              = 0;
    // Append elements to new combined array until midway point
    while( $n <= $iHalfElements )
    {
        // Compared both of the first elements to get the 
        // smallest one into the partial array
        if( $aArrayOne[ 0 ] <= $aArrayTwo[ 0 ] )
        {
            $aPartial[] = array_shift( $aArrayOne );
        }
        else
        {
            $aPartial[] = array_shift( $aArrayTwo );
        }
        ++$n;
    }
    // Check to see if we have an odd or an even array for final element math.
    $bIsOddAndPrecise = $iTotalElements % 2;
    $iMedian = ( $bIsOddAndPrecise ) 
    ? $aPartial[ $n - 1 ] 
    : ( $aPartial[ $n - 1 ] + $aPartial[ $n - 2 ] ) / 2;
    return $iMedian;
}

Use cases tested:

// $aArrayOne = [1, 3, 4 ];
// $aArrayTwo = [1, 2, 3 ];
// EXPECTED 1,1,2,3,3,4 -> (2+3)/2 2.5
// $aArrayOne = [1, 3, 4, 7, 8, 11, 44, 55, 62];
// $aArrayTwo = [2, 4, 5, 7, 33, 56, 77];
// Expected: 1,2,3,4,4,5,7,7,8,11,33,44,55,56,62,77 -> (7+8)/2 7.5
// $aArrayOne = [1, 3, 4 ];
// $aArrayTwo = [ 100, 100];
// EXPECTED 1,3,4,100,100 -> 4
// $aArrayOne = [1,5,8,10];
// $aArrayTwo = [7,9,14,];
// EXPECTED 1,2,7,8,9,10,14 - > 8
// $aArrayOne = [1,5,8,10];
// $aArrayTwo = [7];
// EXPECTED 1,5,7,8,10 - > 7
// $aArrayOne = [1,5,10];
// $aArrayTwo = [50, 50];
// EXPECTED 1,5,10,50,50 - > 10
// $aArrayOne = [50, 50];
// $aArrayTwo = [1,5,10];
// EXPECTED 1,5,10,50,50 - > 10
// $aArrayOne = [1];
// $aArrayTwo = [1];
// EXPECTED-> 1
// $aArrayOne = [100, 100];
// $aArrayTwo = [100];
// EXPECTED -> 100