Format Double as Fraction [closed]

Answer 1

Your problem is pretty simple, because you're assured the denominator will always divide 64. in C# (someone feel free to translate a Java version):

string ToMixedFraction(decimal x) 
{
    int whole = (int) x;
    int denominator = 64;
    int numerator = (int)( (x - whole) * denominator );

    if (numerator == 0) 
    {
        return whole.ToString();
    }
    while ( numerator % 2 == 0 ) // simplify fraction
    {
        numerator /= 2;
        denominator /=2;
    }
    return string.Format("{0} {1}/{2}", whole, numerator, denominator);
}

Bonus: Code Golf

public static string ToMixedFraction(decimal x) {
    int w = (int)x,
        n = (int)(x * 64) % 64,
        a = n & -n;
    return w + (n == 0 ? "" : " " + n / a + "/" + 64 / a);
}