# Leetcode 537 - Complex Number Multiplication

`Note:`

- Use
`split`

with regex to accelerate.

`Question:`

A `complex`

number can be represented as a string on the form “real+imaginaryi” where:

`real`

is the real part and is an integer in the range [-100, 100].`imaginary`

is the imaginary part and is an integer in the range [-100, 100].- $i^2 == -1.$

Given two complex numbers `num1`

and `num2`

as strings, return a string of the complex number that represents their multiplications.

`Example:`

1 | Input: num1 = "1+1i", num2 = "1+1i" |

`Code:`

1 | /** |