Question

• using python to Design and implement an application that reads a word from the user and prints the characters of each word backwards.
  • Use a stack to reverse the characters of each word.

• What is the difference between a queue and a stack?

Answer 1

Please find the answer below::

while True:
word = input("Enter a word or quit to exit : ")
if word=="quit":
break
stack = []
for c in word:
stack.append(c)
print("Reverse is : ",end="")
while len(stack)>0:
c = stack.pop()
print(c,end="")
print()

Stack Represents the collection of elements in Last In First Out order, So if we are inserting something into Stack , it will come out first , Just like storing something in the box, Whatever we are putting into the box at the end, It will come first while picking .

While Queue represent data flow in First in First Out manner, So whatever inserted first will come first out, Just like ticket count , Who comes first will get ticket first and leave the queue.