Check if a item exist in stack or not (#1931)
* Check if a item exist in stack or not * implemented __contains__ method in stack * made changes in __contains__
A
Akash committed
b6fcee311430d1bcf81253898b08f9e80d20064d
Parent: 853741e
Committed by GitHub <noreply@github.com>
on 5/3/2020, 2:15:31 PM