Find the Difference - LeetCode 389 - Python [O(n) time and O(1) Space!]

Explaining how to solve Find the Difference in Python - LeetCode 389!

Music: Bensound
Lemme know if y'all have any questions/comments!!

[rakibulislam]

I have watched all videos two times pls madam.

[mohammedsadiq]

Cool!
I get so mad when I know the concepts but doesn't get reminded to use it for some problems!
Like in this case the first thing that came to my mind was a Hashset or a frequency array and I didn't think of ASCII values!

[billmono]

My solution:
diff = ""
for i in t:

if i not in s:

diff = diff+i

return diff

[sachinfulsunge]

Wait how am i supposed to know this? i just used Counter from collections and checked for the count of characters :/

[pallapothubhargavramfromib]

Please explain with white board if possible madam