Added Complex Number Algorithm

complexNum.java

@@ -0,0 +1,63 @@
+// Java program to add two complex numbers
+
+class ComplexNumber {
+
+	// variables to hold real and imaginary part of complex
+	// number
+	int real, image;
+
+	// Constructor which will be used while creating complex
+	// number
+	public ComplexNumber(int r, int i)
+	{
+		this.real = r;
+		this.image = i;
+	}
+
+	// function to print real number
+	public void showC()
+	{
+		System.out.print(this.real + " +i" + this.image);
+	}
+
+	// function for addition
+	public static ComplexNumber add(ComplexNumber n1,
+									ComplexNumber n2)
+	{
+
+		// creating blank complex number
+		// to store result
+		ComplexNumber res = new ComplexNumber(0, 0);
+
+		// adding real parts of both complex numbers
+		res.real = n1.real + n2.real;
+
+		// adding imaginary parts
+		res.image = n1.image + n2.image;
+
+		// returning result
+		return res;
+	}
+
+	public static void main(String arg[])
+	{
+
+		// creating two complex numbers
+		ComplexNumber c1 = new ComplexNumber(4, 5);
+		ComplexNumber c2 = new ComplexNumber(10, 5);
+
+		// printing complex numbers
+		System.out.print("first Complex number: ");
+		c1.showC();
+
+		System.out.print("\nSecond Complex number: ");
+		c2.showC();
+
+		// calling add() to perform addition
+		ComplexNumber res = add(c1, c2);
+
+		// displaying addition
+		System.out.println("\nAddition is :");
+		res.showC();
+	}
+}