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public class ComplexNumber
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{
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private double x,y;
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public ComplexNumber(double real,double imaginary)
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{
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this.x=real;
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this.y=imaginary;
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}
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public double real()
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{
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return x;
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}
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public double imaginary()
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{
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return y;
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}
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public double magnitude()
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{
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return Math.sqrt(x*x+y*y);
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}
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public String toString()
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{
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return "{"+x+","+y+"}";
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}
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public static ComplexNumber add(ComplexNumber a,ComplexNumber b)
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{
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return new ComplexNumber(a.x+b.x,a.y+b.y);
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}
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public ComplexNumber add(ComplexNumber a)
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{
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return new ComplexNumber(this.x+a.x,this.y+a.y);
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}
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public static ComplexNumber multiply(ComplexNumber a,ComplexNumber b)
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{
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return new ComplexNumber(a.x*b.x-a.y*b.y,a.x*b.y+a.y*b.x);
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}
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public ComplexNumber multiply(ComplexNumber a)
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{
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return new ComplexNumber(x*a.x-y*a.y,x*a.y+y*a.x);
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}
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}

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