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Stack In Python

class Stack: def __init__(self): self.stack = [] def add(self, dataval): # Use list append method to add element if dataval not in self.stack: self.stack.append(dataval) return True else: return False # Use peek to look at the top of the stack def peek(self): return self.stack[-1] AStack = Stack() AStack.add("Mon") AStack.add("Tue") AStack.peek() print(AStack.peek()) AStack.add("Wed") AStack.add("Thu") print(AStack.peek())
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Stack In Python 





class Stack:
   def __init__(self):
      self.stack = []

   def add(self, dataval):
# Use list append method to add element
      if dataval not in self.stack:
         self.stack.append(dataval)
         return True
      else:
         return False
# Use peek to look at the top of the stack
   def peek(self):     
	   return self.stack[-1]

AStack = Stack()
AStack.add("Mon")
AStack.add("Tue")
AStack.peek()
print(AStack.peek())
AStack.add("Wed")
AStack.add("Thu")
print(AStack.peek())

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