Leetcode 67. Add Binary

Description

 

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.

 

Answer

class Solution:
    def addBinary(self, a: str, b: str) -> str:
        i = int(a,2)
        j = int(b,2)
        
        # ans = i+j
        # return bin(ans)[2:]
        return format(i+j,'b')

 

진수 변환

>> bin(30)
'0b1110'

>> oct(30)
'0o36'

>> hex(30)
'0x1e'

Format 함수

# 접두어 제외하기 

>> format(0b11110, 'b')
'11110'

# 접두어 포함

>> format(30, '#b')
'11110'