mathdatech/Python
1
0
Fork 0
mirror of https://github.com/TheAlgorithms/Python.git synced 2024-10-06 05:39:30 +00:00
Code Issues Packages Projects Releases Wiki Activity

Check if a item exist in stack or not (#1931)

Browse Source 
* Check if a item exist in stack or not

* implemented __contains__ method in stack

* made changes in __contains__
This commit is contained in:
Akash 2020-05-03 19:45:31 +05:30 committed by GitHub
parent 853741e518
commit b6fcee3114
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
data_structures/stacks/stack.py
View File

@ -46,7 +46,11 @@ class Stack:
def size(self):
""" Return the size of the stack."""
return len(self.stack)
def __contains__(self, item) -> bool:
"""Check if item is in stack"""
return item in self.stack
class StackOverflowError(BaseException):
pass
@ -66,3 +70,7 @@ if __name__ == "__main__":
print("After push(100), the stack is now: " + str(stack))
print("is_empty(): " + str(stack.is_empty()))
print("size(): " + str(stack.size()))
num = 5
if num in stack:
print(f"{num} is in stack")