Method subtract

src/main/java/com/thealgorithms/maths/FFT.java:87–92

Subtracts a number from this complex number. @param z The number to be subtracted. @return The difference.

(Complex z)

         * @return The difference.
         */
        public Complex subtract(Complex z) {
            Complex temp = new Complex();
            temp.real = this.real - z.real;
            temp.img = this.img - z.img;
            return temp;
        }

        /**
         * Multiplies this complex number by another.