//分数配置
public static Fraction_Math FractionSet(double num1, double num2)
{
Fraction_Math Franction = new Fraction_Math();
int opnext = l.Next(4, 5);
Fraction_Math result = null;
Franction.Denominator = num1;
Franction.Numerator = num2;
switch (opnext)
{
case 1:
result = Franction.Add(num1, num2);
break;
case 2:
result = Franction.Sub(num1, num2);
break;
case 3:
result = Franction.Multiple(num1, num2);
break;
case 4:
result = Franction.Divided(num1, num2);
break;
}
return(result);
}
/// <summary>
/// 计算两个分数的相除,并返回一个分数
/// </summary>
/// <param name="dividend">被除数</param>
/// <param name="divisor">除数</param>
/// <returns></returns>
public Fraction_Math Divided(Fraction_Math dividend, Fraction_Math divisor)
{
Fraction_Math result = new Fraction_Math();
double dencominator = dividend.Denominator * divisor.Numerator;
result.Denominator = dencominator;
result.Numerator = dividend.Numerator * divisor.Denominator;
return(result);
}
/// <summary>
/// 计算两个分数的相乘,并返回一个分数
/// </summary>
/// <param name="f1"></param>
/// <param name="f2"></param>
/// <returns></returns>
public Fraction_Math Multiple(Fraction_Math f1, Fraction_Math f2)
{
Fraction_Math result = new Fraction_Math();
double dencominator = f1.Denominator * f2.Denominator;
result.Denominator = dencominator;
result.Numerator = f1.Numerator * f2.Numerator;
return(result);
}
/// <summary>
/// 计算两个分数的相减,并返回一个分数
/// </summary>
/// <param name="minuend">被减数</param>
/// <param name="subtrahend">减数</param>
/// <returns></returns>
public Fraction_Math Sub(Fraction_Math minuend, Fraction_Math subtrahend)
{
Fraction_Math result = new Fraction_Math();
double dencominator = CalculateLeaseCommonMultiple(minuend.Denominator, subtrahend.Denominator);
minuend.Numerator = (dencominator / minuend.Denominator) * minuend.Numerator;
subtrahend.Numerator = (dencominator / subtrahend.Denominator) * subtrahend.Numerator;
result.Denominator = dencominator;
result.Numerator = minuend.Numerator - subtrahend.Numerator;
return(result);
}
/// <summary>
/// 计算两个分数的相加,并返回一个分数
/// </summary>
/// <param name="f1"></param>
/// <param name="f2"></param>
/// <returns></returns>
public Fraction_Math Add(Fraction_Math f1, Fraction_Math f2)
{
Fraction_Math result = new Fraction_Math();
double dencominator = CalculateLeaseCommonMultiple(f1.Denominator, f2.Denominator);
f1.Numerator = (dencominator / f1.Denominator) * f1.Numerator;
f2.Numerator = (dencominator / f2.Denominator) * f2.Numerator;
result.Denominator = dencominator;
result.Numerator = f1.Numerator + f2.Numerator;
return(result);
}
public static Fraction_Math Score(string fraction)
{
Fraction_Math fraction_Math = new Fraction_Math();
if (!IsFractioon(fraction))
{
fraction_Math.Numerator = Convert.ToDouble(fraction) * Convert.ToDouble(fraction);
fraction_Math.Denominator = Convert.ToDouble(fraction);
return(fraction_Math);
}
string n = null, m = null;
n = fraction.Substring(0, Fraction_Math.Appoint(fraction));
m = fraction.Substring(Fraction_Math.Appoint(fraction) + 1, fraction.Length - 1 - Fraction_Math.Appoint(fraction));
fraction_Math.Numerator = Convert.ToDouble(n);
fraction_Math.Denominator = Convert.ToDouble(m);
return(fraction_Math);
}
public static string Fraction(string d1, string d2, char c1)
{
Fraction_Math fraction_Math = new Fraction_Math();
DataTable dt = new DataTable();
Fraction_Math D1 = Score(d1), D2 = Score(d2);
string s;
switch (c1)
{
case '＋':
Fraction_Math st = fraction_Math.Add(D1, D2);
s = st.Numerator + "/" + st.Denominator;
break;
case '－':
st = fraction_Math.Sub(D1, D2);
s = st.Numerator + "/" + st.Denominator;
break;
case '×':
st = fraction_Math.Multiple(D1, D2);
s = st.Numerator + "/" + st.Denominator;
break;
case '÷':
st = fraction_Math.Divided(D1, D2);
s = st.Numerator + "/" + st.Denominator;
break;
default:
s = null;
break;
}
if (Regex.IsMatch(dt.Compute(s, null).ToString(), @"^[+-]?\d*[.]?$"))
{
return(dt.Compute(s, null).ToString());
}
return(s);
}
private static string GetAns(string a1, string b1, char c)
{
double s = 0, a, b;
if (IsFractioon(a1) || IsFractioon(b1))
{
return(Fraction_Math.Fraction(b1, a1, c));
}
a = Convert.ToDouble(a1);
b = Convert.ToDouble(b1);
switch (c)
{
case '＋': s = b + a; break;
case '－': s = b - a; break;
case '×': s = b * a; break;
case '÷': s = b / a; break;
case '^': s = Math.Pow(b, a); break;
}
return(s.ToString());
}
