53y

Author: ProHiryu

Math/537.md

@@ -0,0 +1,28 @@
+## 537 Complex Number Multiplication
+
+#### Description
+
+[link](https://leetcode.com/problems/complex-number-multiplication/)
+
+---
+
+#### Solution
+
+- See Code
+
+---
+
+#### Code
+
+<!-- O(n) -->
+
+```python
+class Solution:
+    def complexNumberMultiply(self, a: str, b: str) -> str:
+        def get_int(x):
+            n, m = x.split('+')
+            return int(n), int(m[:-1])
+        a_a, a_b = get_int(a)
+        b_a, b_b = get_int(b)
+        return str(a_a*b_a - a_b*b_b) + "+" + str(a_b*b_a + a_a*b_b) + "i"
+```