题目
Given a list of non negative integers, arrange them such that they form the largest number.
解题思路
将所有数字转换成字符串，ab两个数的大小为，比ab和ba的大小，将所有的数从大到小排列
代码
class Compare(str):
def __lt__(x, y):
return x + y < y + x
class Solution:
def largestNumber(self, nums: List[int]) -> str:
largest_num = ''.join(sorted(map(str, nums), key=Compare, reverse=True))
return '0' if largest_num[0] == '0' else largest_num
