Single Number - Leetcode 136

#leetcode #neetcode #python

[albin_joby]

Wow! that's a really cool way to solve this problem..

[manthanmoudgalya]

I am feeling like XOR is some kind of a super sauce

[MichaelPiraino]

This is legitimately so cool. Using your understanding of how code works in assembly to make a cool more efficient solution to a problem

[shreyansh_]

Did this problem a few days ago...understood the XOR approach now
Thanks man! ♥️

[EMdragonKnight]

Thanks for that. I struggle with bit manipulation type problems.

[lightwoodalec]

Dude these shorts are sp extremely good make me wanna leetcode regularly 😊

[hola-hola-]

Also, XOR is commutative, so the order the numbers appear doesn't matter at all

[JP-jfoc]

this is sooo specific lol there is no way a person will think you came up with that during the interview lol

[cman]

I would just used a stack and solved it similar to parenthesis matching

[KarthikMohanaKrishnan]

We can use the index of and the last index to check if it's a chat array in Java.

[josephvictory]

Wow and i thought i was creative with xors. Beautiful application of a fundamental.

Wont lie i scoffed at the east label. But what a fantastic example.

[allenytw]

if explain more how the position arent affect the result would be even better

[del]

this only works because the XOR operator and the set of all binary numbers satisfy

[geetasarayaarts]

Take a isseen boolean array of size n+1 by default all values are falsw.
Now traverse the array of each number if the array value is seen already then add it to the result array

[life_score]

Nice but this would be a lousy interview question

[marcindj]

What program is it, that analyze the code and shows memory and ms results?

[perenegro]

There's no way a normal person would think this solution in a coding interview. You straight up memorize it or you're cooked. 💀

[ggwp]

Does any knows how can i learn all these niche tricks?

[outofboundsbro]

Would you be able to use a Set data structure instead? And just return the first element?

[mehdim]

Whats that app you use to get the time perf ?