솜씨좋은장씨

Given an integer, return its base 7 string representation. Example 1: Input: 100 Output: "202" Example 2: Input: -7 Output: "-10" Note: The input will be in range of [-1e7, 1e7]. Solution class Solution: def convertToBase7(self, num: int) -> str: if num == 0: return str(num) sign = 1 if num < 0: sign = -1 num = abs(num) answer = '' while num: answer = str(num % 7) + answer num //= 7 return ('-' ..