Jul 11, 2024
diff --git a/data-structures/Stack/StackImplementation.py b/data-structures/Stack/StackImplementation.py

 from sys import maxsize

 def createStack():
    stack = []
    return stack

 def isEmpty(stack):
    return len(stack) == 0

 def push(stack, item):
    stack.append(item)
    print(item + " pushed to stack ")

 # Function to remove an item from stack. It decreases size by 1
 def pop(stack):
    if (isEmpty(stack)):
        return str(-maxsize -1) # return minus infinite

    return stack.pop()

 # Function to return the top from stack without removing it
 def peek(stack):
    if (isEmpty(stack)):
        return str(-maxsize -1) # return minus infinite
    return stack[len(stack) - 1]

 stack = createStack()
 push(stack, str(10))
 push(stack, str(20))
 push(stack, str(30))
 print(pop(stack) + " popped from stack")
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,32 @@

		from sys import maxsize

		def createStack():
		stack = []
		return stack

		def isEmpty(stack):
		return len(stack) == 0

		def push(stack, item):
		stack.append(item)
		print(item + " pushed to stack ")

		# Function to remove an item from stack. It decreases size by 1
		def pop(stack):
		if (isEmpty(stack)):
		return str(-maxsize -1) # return minus infinite

		return stack.pop()

		# Function to return the top from stack without removing it
		def peek(stack):
		if (isEmpty(stack)):
		return str(-maxsize -1) # return minus infinite
		return stack[len(stack) - 1]

		stack = createStack()
		push(stack, str(10))
		push(stack, str(20))
		push(stack, str(30))
		print(pop(stack) + " popped from stack")