最大数

示例 1:

输入: [10,2]
输出: 210
示例 2:

输入: [3,30,34,5,9]
输出: 9534330

class Solution(object):
    def largestNumber(self, nums):
        for i in range(len(nums)):
            for j in range(len(nums) - i - 1):
                if str(nums[j]) + str(nums[j + 1]) > str(nums[j + 1]) + str(nums[j]):
                    nums[j], nums[j + 1] = nums[j + 1], nums[j]
        s = ''
        if nums[-1] == 0:
            return('0')
        for i in nums:
            s = str(i) + s
        return s

a = Solution().largestNumber([3,30,34,5,9])
print(a)