LC-0537 Medium LeetCode

537. Complex Number Multiplication

Read the full problem statement on LeetCode.

Difficulty: medium Acceptance: 72% Topics: Math, String, Simulation

Reading material

Math & Geometry 12 min Strings 12 min Simulation & Enumeration 9 min

Reference solution (spoiler · python)

# Time:  O(1)
# Space: O(1)

class Solution(object):
    def complexNumberMultiply(self, a, b):
        """
        :type a: str
        :type b: str
        :rtype: str
        """
        ra, ia = map(int, a[:-1].split('+'))
        rb, ib = map(int, b[:-1].split('+'))
        return '%d+%di' % (ra * rb - ia * ib, ra * ib + ia * rb)

Solution from kamyu104/LeetCode-Solutions · MIT