给定一个整数,将其转化为7进制,并以字符串形式输出。
示例 1: 输入: 100 输出: "202" 示例 2: 输入: -7 输出: "-10"
class Solution(object):
def convertToBase7(self, num):
"""
:type num: int
:rtype: str
"""
if num == 0:
return '0'
else:
res = ''
n = abs(num)
while n>0 :
res = str(n%7) +res
n = n/7
if num < 0:
res = '-'+res
return res