题解 | #数组中重复的数字#
数组中重复的数字
http://www.nowcoder.com/practice/6fe361ede7e54db1b84adc81d09d8524
代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
@param numbers int整型一维数组
@return int整型
class Solution:
def duplicate(self , numbers: List[int]) -> int:
re = dict()
for idx,val in enumerate(numbers):
if val not in re:
re[val] = id
else:
return val
print(re)
if re == {}:
return -1
# write code here