Single Number | Practice Problem on List | Python | Castor Classes

Code: n=[2,2,1]; m=0; for i in n: if(n.count(i)%2!=0): m=i; break; print(m) Prerequisite: List in Python | Part 1 | Castor Classes: https://www.youtube.com/watch?v=P2ogQ... List in Python | Part 2 | Castor Classes: https://www.youtube.com/watch?v=vNxxQ... List in Python | Part 3 | Castor Classes https://www.youtube.com/watch?v=aUfow... Iterate over a list & string | List in Python | Part 4 | Castor Classes https://www.youtube.com/watch?v=4Zrfk... Convert list to string | List in Python | Part 5 | Castor Classes https://www.youtube.com/watch?v=mLHOF... Python for beginners: https://www.youtube.com/watch?v=egq7Z...