LeetCode 67. Add Binary

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题目

Given two binary strings, return their sum (also a binary string).

The input strings are both non-empty and contains only characters 1 or 0.

Example 1:

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Input: a = "11", b = "1"
Output: "100"

Example 2:

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Input: a = "1010", b = "1011"
Output: "10101"

Constraints:

  • Each string consists only of '0' or '1' characters.
  • 1 <= a.length, b.length <= 10^4
  • Each string is either "0" or doesn’t contain any leading zero.

思路

Easy.

代码

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class Solution(object):
    def addBinary(self, a, b):
        """
        :type a: str
        :type b: str
        :rtype: str
        """
        return bin(int(a,2) + int(b,2))[2:]