# Python "Wrong Answer", leetcode is wrong?

• Hi all,

I have the code for this question, pretty straightforward:

``````class Solution:
# @param {integer[]} nums
# @return {integer}
def removeDuplicates(self, nums):
self.nums = nums
s = len(nums)
if s == 0 or s == 1:
return s
k = nums[0]
for i in nums[1:]:
if i-k == 0:
s = s-1
else:
k = i
return s
``````

Based on the problem, the required output should be the length with no repeated numbers.

But I have this error:

Input: [1,1,2] Output: [1,1] Expected: [1,2]

actually, I tested this on Pycharm, the output is 2...

Leetcode has system error?

Thanks

• The "Output" is of course the combination of the return value and the changed list. And you're btw not changing the list in the slightest.

• This post is deleted!

• You should change the input list ("nums" in this problem).

``````def removeDuplicates(self, nums):
n = len(nums)
if n <= 1:
return n
for i in xrange(n):
while i < n - 1 and nums[i] == nums[i+1] :
nums.pop(i)
n = n - 1
return n
``````

• I would not accept your solution as valid to be honest. You're making python do all the work for you.

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