java 编写的复数加减乘除课件

1、secondComplex.javapackage secondComplex;public class secondComplex private double real;private double vir;public secondComplex()this(0.0,0.0);public secondComplex(double real, double vir) this.real = real;this.vir = vir;public secondComplex(secondComplex c)this.real = c.real;this.vir = c.vir;/求共轭复数p

2、ublic static secondComplex Conjugate(secondComplex a)return new secondComplex(a.real, -a.vir);/求复数的相反数public secondComplex oppositeComplex(secondComplex a)return new secondComplex(-a.real, -a.vir);/求复数的倒数public static secondComplex Reciprocal(secondComplex a)secondComplex b = secondComplex.Conjugate

3、(a);b.Multiplication(a);b.real = b.real +b.vir;a = secondComplex.Conjugate(a);if(Math.abs(b.real) 1e-6)b.real = 0;return null;return new secondComplex(a.real/b.real, a.vir/b.real);/* * this+=a * return * */public void Add(secondComplex a)this.real += a.real;this.vir += a.vir;/* * this-=a; */public v

4、oid Sub(secondComplex a)a = a.oppositeComplex(a);this.Add(a);/* * this*=a; */public void Multiplication(secondComplex a)double tmp;tmp = this.real;this.real = this.real * a.real - this.vir * a.vir;this.vir = tmp * a.vir + this.vir * a.real; /* *this /= b * return */public void Division(secondComplex

5、 a)secondComplex b = Multiplication(this, secondComplex.Reciprocal(a);if(b = null)return;this.real = b.real;this.vir = b.vir;/* * * c = this + a * return */public secondComplex Add(secondComplex a, int type) return Add(this, a);/* * c = this - a */public secondComplex Sub(secondComplex a, int type)a

6、 = a.oppositeComplex(a);return Add(this, a);/* * c = this * a */public secondComplex Multiplication(secondComplex a, int type)return Multiplication(this, a);/* *c = this / b * return */public secondComplex Division(secondComplex a,int type)return Division(this,a);/* * c = a + b * param a * param b *

7、 return */public static secondComplex Add(secondComplex a, secondComplex b)return new secondComplex(a.real + b.real, a.vir + b.vir);/* * c = a - b * return */public secondComplex Sub(secondComplex a, secondComplex b)b = b.oppositeComplex(b);return Add(a, b);/* * c = a * b * return */public static se

8、condComplex Multiplication(secondComplex a, secondComplex b)if(b = null)return null;return new secondComplex(a.real * b.real - a.vir * b.vir, a.real * b.vir + a.vir * b.real);/* *c = a / b * return */public secondComplex Division(secondComplex a, secondComplex b)if(secondComplex.Reciprocal(b) = null

9、)return null;return Multiplication(a, secondComplex.Reciprocal(b);public double getReal() if(Math.abs(real) 1e-6)real = 0;return real;public void setReal(double real) this.real = real;public double getVir() if(Math.abs(vir) 1e-6)vir = 0;return vir;public void setVir(double vir) this.vir = vir;public

10、 String toString()if(Math.abs(this.getReal() 1e-6 & Math.abs(this.getVir() 1e-6)System.out.println(0);else if(Math.abs(this.getReal() 1e-6)if(Math.abs(this.getVir() 0)System.out.println(i);elseSystem.out.println(-i);elseSystem.out.println(this.getVir()+i);else if(Math.abs(this.getVir() 0)System.out.

11、println(+ i);elseSystem.out.println(- i);else if(Math.abs(this.getVir() 1e-6)System.out.println( + this.getVir()+i);elseif(this.getVir() 0)System.out.println(this.getReal() + + + this.getVir() + i);elseSystem.out.println(this.getReal() + - + Math.abs(this.getVir() + i);return ;Complex.javapackage se

12、condComplex;public class Complex extends secondComplex private double mo;private double jiao;public Complex()this(1.0,Math.PI/4);public Complex(double mo, double jiao)super(Complex.returnX(mo, jiao), Complex.returnY(mo, jiao);public static double returnX(double mo, double jiao)return mo * Math.cos(j

13、iao);public static double returnY(double mo, double jiao)return mo * Math.sin(jiao);public static double returnMo(double x, double y)x = Math.abs(x);y = Math.abs(y);if(x 1e-6)x = 0;if(y 1e-6)y = 0;return Math.sqrt(x*x + y*y);public static double returnJiao(double x, double y)double tmp1;int st1;int

14、st2;double tmp2;/横轴正向：1；反向：-1；原点：0/纵轴正向：1；反向：-1；原点：0if(Math.abs(x) 0)tmp1 = x;st1 = 1;elsetmp1 = x;st1 = -1;if(Math.abs(y) 0)tmp2 = y;st2 = 1;elsetmp2 = y;st2 = -1;if(0 = st1 & 0 = st2)System.out.println(复数无辐角);return -1000;else if(0 = st1 & 0 != st2)if(st2 0)return Math.PI/2;elsereturn -Math.PI/2;e

15、lse if(st1 0 & tmp2 != 0.0)return Math.atan(tmp2/tmp1);else if(st1 0 & tmp2 != 0.0)return Math.atan(tmp2/tmp1)-Math.PI;return -1000;public String toString()if(Complex.returnJiao(this.getReal(), this.getVir() = -900)return ;return 计算结果模值为： + (double)(int)(Complex.returnMo(this.getReal(), this.getVir(

16、)*1000)/1000 + 角度为： + (double)(int)(Complex.returnJiao(this.getReal(), this.getVir()*1000)/1000;public double getMo() return mo;public void setMo(double mo) this.mo = mo;public double getJiao() return jiao;public void setJiao(double jiao) this.jiao = jiao;/* * this+=a */public void Add(Complex a) th

17、is.setReal(this.getReal() + a.getReal(); this.setVir(this.getVir() + a.getVir();public void Sub(Complex a)secondComplex tmp = a.oppositeComplex(new secondComplex(a.getReal(), a.getVir();Complex d = new Complex();d.setReal(tmp.getReal();d.setVir(tmp.getVir();this.Add(d);public void Multiplication(Com

18、plex a)this.setReal(this.getReal() * a.getReal() - this.getVir() * a.getVir();this.setVir( this.getReal() * a.getVir() + this.getVir() * a.getReal(); public void Division(Complex a)secondComplex tmp = new secondComplex(a.getReal(), a.getVir();/Complex b = Multiplication(this, secondComplex.Reciproca

19、l(tmp);secondComplex b = secondComplex.Reciprocal(tmp);if(b = null)return;Complex c = new Complex(Complex.returnMo(b.getReal(), b.getVir(),Complex.returnJiao(b.getReal(), b.getVir();Complex d = Multiplication(this, c);this.setReal(d.getReal();this.setVir(d.getVir();/* * c = this + a * return */publi

20、c Complex Add(Complex a, int type) return Add(this, a);public Complex Sub(Complex c, int type)secondComplex a = new secondComplex(c.getReal(),c.getVir();a = a.oppositeComplex(a);Complex d = new Complex(Complex.returnMo(a.getReal(), a.getVir(),Complex.returnJiao(a.getReal(), a.getVir();return Add(thi

21、s, d);public Complex Multiplication(Complex a, int type)return Multiplication(this, a);public Complex Division(Complex a,int type)return Division(this,a);/* * c = a + b * return */public static Complex Add(Complex a, Complex b)secondComplex c = new secondComplex(a.getReal() + b.getReal(), a.getVir()

22、 + b.getVir();Complex d = new Complex(Complex.returnMo(c.getReal(), c.getVir(),Complex.returnJiao(c.getReal(), c.getVir();return d;public Complex Sub(Complex a, Complex d)secondComplex b = new secondComplex(d.getReal(),d.getVir();b = b.oppositeComplex(b);Complex c = new Complex(Complex.returnMo(b.ge

23、tReal(), b.getVir(),Complex.returnJiao(b.getReal(), b.getVir();return Add(a, c);public static Complex Multiplication(Complex a, Complex b)if(b = null)return null;secondComplex bb = new secondComplex(a.getReal() * b.getReal() - a.getVir() * b.getVir(), a.getReal() * b.getVir() + a.getVir() * b.getRea

24、l();Complex c = new Complex(Complex.returnMo(bb.getReal(), bb.getVir(),Complex.returnJiao(bb.getReal(), bb.getVir();return c;public Complex Division(Complex a, Complex c)secondComplex b = new secondComplex(c.getReal(), c.getVir();secondComplex f = secondComplex.Reciprocal(b);if(f = null)return null;

25、Complex d = new Complex(Complex.returnMo(f.getReal(), f.getVir(),Complex.returnJiao(f.getReal(), f.getVir();return Multiplication(a, d);demoSecondComplex.javapackage secondComplex;public class demoSecondComplex public static void main(String args) System.out.println(-mo jiao-);Complex a = new Comple

26、x(1.0, 0.5*Math.PI);Complex b = new Complex(2.0, 0.5*Math.PI);a.Add(b);System.out.println(a);a = b.Add(a, 0);System.out.println(a);Complex d = a.Add(b, a);System.out.println(d);a.Sub(b);System.out.println(a);a = a.Sub(b, 0);System.out.println(a);a = a.Sub(a, b);System.out.println(a);a.Multiplication

27、(b);System.out.println(a);a = a.Multiplication(b, 0);System.out.println(a);a = a.Multiplication(a, b);System.out.println(a);trya.Division(b);System.out.println(a);a = a.Division(b, 0);System.out.println(a);a = a.Division(a, b);System.out.println(a);catch(Exception e)System.out.println(除0错);System.out.println(-real vir-);secondComplex a1 = new secondComplex(1.0, 1);secondComplex b1 = new secondComplex(2.0, 5);a1.Add(b1);System.out.println(a1);a1 = b1.Add(a1, 0);System.out.println(a1);secondComplex d1 = a1.Add(b1, a1);System