LIFO Logic — Last In, First Out

LIFO is an ordering rule, not a datatype. Lists, recursion depth, and explicit stacks all share this order of exposure.

Try this in Python

order = []
for x in ["first", "second", "third"]:
    order.append(x)
while order:
    print(order.pop())

Key takeaways

• Trace what is still hidden under the top.
• Reversing a sequence is often “push all, pop all.”
• If the story is nested, LIFO usually wins.