用排序函数排序

将字符串排序后连接起来！

import  functools


def cmp(x, y):
    if (x + y) > (y + x):
        return 1
    elif (x + y) < (y + x):
        return -1
    else:
        return 0


n = int(input())
s = input().split( )[:n]

# s.sort(key=functools.cmp_to_key(cmp), reverse=True)
# print(''.join(s).lstrip("0"))
s_new = sorted(s, key=functools.cmp_to_key(cmp), reverse=True)
# s_new = sorted(s,  reverse=True)
print(''.join(s_new).lstrip("0"))

3
ac1 cb3 abc dfg2
cb3ac1abc