Assessment Exercise 1

Complex.java

+import org.junit.internal.RealSystem;
+
+public class Complex {
+
+
+  public double real;
+  public double imag;
+
+  public Complex()
+  {
+    real = 0;
+    imag = 0;
+  }
+
+
+  public Complex(double r, double i)
+  {
+    real = r;
+    imag = i;
+    double d = Math.atan2(i,r); 
+  }
+
+  public double imag() {
+    
+    return imag;
+  }
+
+  public double real()
+  { 
+    return real;
+  }
+
+  public double magnitude() {
+    double realSquared = real() * real();
+    double imagSquared = imag() * imag();
+  return (Math.sqrt(realSquared + imagSquared));
+}
+
+  public double argument()
+  { 
+    return (Math.atan2(imag(), real()));
+  }
+
+  public String toString() {
+    String out = "";
+    if (real() > 0) {
+      out += Double.toString(real());
+      if (imag() > 0){
+        out += " + ";
+      } else if (imag() < 0){
+        out += " - ";
+      }
+
+    }
+    if (imag() > 0){
+      out += "j";
+      out += Double.toString(imag());
+    } else if (real() == 0 && imag() < 0) {
+      out += "-";
+      out += "j";
+      out += Double.toString(imag());
+    } else if (imag() < 0){
+      out += "j";
+      double make_positive = -imag();
+      out += Double.toString(make_positive);
+    }
+
+    return out;
+    
+    }
+
+  
+
+  public Complex add(Complex complexNum)
+  {
+    Complex a = new Complex(real, imag);
+    double firstReal = a.real;
+    double firstImag = a.imag;
+
+    Complex b = complexNum;
+    double secondReal = b.real;
+    double secondImag = b.imag;
+
+    double c = firstReal + secondReal;
+    double d = firstImag + secondImag;
+    
+    Complex answer = new Complex(c,d);
+    return answer;
+  }
+  public static void main(String[] args) {
+
+  }
+
+}
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