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2016 Update

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Tina Müller 2016-12-05 22:15:40 +01:00
parent 948b86eafa
commit dcf5d15da3
7965 changed files with 139854 additions and 31002 deletions
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78
Task/Arithmetic-Complex/Java/arithmetic-complex.java
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@ -1,44 +1,52 @@
public class Complex{
public final double real;
public final double imag;
public class Complex {
public final double real;
public final double imag;
public Complex(){this(0,0)}//default values to 0...force of habit
public Complex(double r, double i){real = r; imag = i;}
public Complex() {
this(0, 0);
}
public Complex add(Complex b){
return new Complex(this.real + b.real, this.imag + b.imag);
}
public Complex(double r, double i) {
real = r;
imag = i;
}
public Complex mult(Complex b){
//FOIL of (a+bi)(c+di) with i*i = -1
return new Complex(this.real * b.real - this.imag * b.imag, this.real * b.imag + this.imag * b.real);
}
public Complex add(Complex b) {
return new Complex(this.real + b.real, this.imag + b.imag);
}
public Complex inv(){
//1/(a+bi) * (a-bi)/(a-bi) = 1/(a+bi) but it's more workable
double denom = real * real + imag * imag;
return new Complex(real/denom,-imag/denom);
}
public Complex mult(Complex b) {
// FOIL of (a+bi)(c+di) with i*i = -1
return new Complex(this.real * b.real - this.imag * b.imag,
this.real * b.imag + this.imag * b.real);
}
public Complex neg(){
return new Complex(-real, -imag);
}
public Complex inv() {
// 1/(a+bi) * (a-bi)/(a-bi) = 1/(a+bi) but it's more workable
double denom = real * real + imag * imag;
return new Complex(real / denom, -imag / denom);
}
public Complex conj(){
return new Complex(real, -imag);
}
public Complex neg() {
return new Complex(-real, -imag);
}
public String toString(){ //override Object's toString
return real + " + " + imag + " * i";
}
public Complex conj() {
return new Complex(real, -imag);
}
public static void main(String[] args){
Complex a = new Complex(Math.PI, -5) //just some numbers
Complex b = new Complex(-1, 2.5);
System.out.println(a.neg());
System.out.println(a.add(b));
System.out.println(a.inv());
System.out.println(a.mult(b));
System.out.println(a.conj());
}
@Override
public String toString() {
return real + " + " + imag + " * i";
}
public static void main(String[] args) {
Complex a = new Complex(Math.PI, -5); //just some numbers
Complex b = new Complex(-1, 2.5);
System.out.println(a.neg());
System.out.println(a.add(b));
System.out.println(a.inv());
System.out.println(a.mult(b));
System.out.println(a.conj());
}
}