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added peek

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This commit is contained in:
Benjamin Adovasio
2026-03-15 16:29:43 -04:00
parent e25318b336
commit b2ecff6a6b
1 changed files with 6 additions and 2 deletions
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8
Project 5/Stack.py
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@@ -47,7 +47,9 @@ class Stack[T]:
Raises: Raises:
EmptyError exception if the stack is empty EmptyError exception if the stack is empty
''' '''
pass if self.is_empty():
raise EmptyError("Stack is empty")
return self._data.remove_head()
def peek(self) -> T: def peek(self) -> T:
''' returns the topmost element from the stack without modifying the stack ''' returns the topmost element from the stack without modifying the stack
@@ -56,7 +58,9 @@ class Stack[T]:
Raises: Raises:
EmptyError exception if the stack is empty EmptyError exception if the stack is empty
''' '''
pass if self.is_empty():
raise EmptyError("Stack is empty")
return self._data.get_head()
def is_empty(self) -> bool: def is_empty(self) -> bool:
''' indicates whether the stack is empty ''' indicates whether the stack is empty