Remove Duplicates From Sorted Array - Leetcode 26 - Arrays & Strings (Python)

[@GregHogg]

Master Data Structures & Algorithms for FREE at AlgoMap.io/

[@asvlog425]

I saw so many videos but your explanation was great for me to understand the concept. Thank you

[@pravinprince3221]

thank you for the wonderful video Greg, very useful thanks again

[@NoTMaFiA24]

can you please also make videos on daily challenges of leetcode love your videos, you teach us in nice way👍👍

[@LawZist]

The drawing is so helpful! Can you do calculator leet code question?

[@benhurthandu6821]

why the error 'return' outside function?

[@chandershekhar9251]

Please make videos on leetcode POTD sir

[@yygysgtyfugunvt]

Hi Greg could you please provide the provide the discord server link?

[@BossganabathiVellow]

class Solution(object): def removeDuplicates(self, nums): """ :type nums: List[int] :rtype: int """ a = [] for num in nums: if num not in a: a.append(num) return len(a) nums = [1,1,2] solve = Solution() print(solve.removeDuplicates(nums)) this is my method when running in online complier no error showing but when runs in leetcode showing error. Sir can explain me why this can happend ?

[@MaksymOliinyk-z5u]

hi, you need to modify exactly the nums array that you have in your function, you should not create any new arrays

[@BossganabathiVellow]

class Solution(object): def removeDuplicates(self, nums): """ :type nums: List[int] :rtype: int """ a = [] for num in nums: if num not in a: a.append(num) return len(a) nums = [1,1,2] solve = Solution() print(solve.removeDuplicates(nums)) this is my method showing error but online complier didn't show any error the reason why ?

[@amlet00]

because you need do it in-place, that means you cannot use any extra space

[@BossganabathiVellow]

@@amlet00 Thank you sir

[@tejas8211]

This ain't easy mannnnn

[@MohamedAbdallahdjedouani]

return len(set(nums)) i think this gonna work , no ?

[@GregHogg]

Yeah you should read the question again haha

[@SwizzRizzBizz]

Wont work because sets are unordered and the question asks to keep the order of the given array! So you cannot use a set data structure