Polish and Reverse Polish Notation

Polish and Reverse Polish Notation is a DSA topic. In plain words you use it for a short Polish and Reverse Polish Notation example in a short dry-run on paper. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Polish and Reverse Polish Notation example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Polish and Reverse Polish Notation.

From the example next to this theory: Polish and Reverse Polish Notation — big-O describes how work grows with input size — ignore constants.

Trap — only saying “Polish and Reverse Polish Notation” with no example. Fix that before you talk about advanced DSA.

Viva: what is Polish and Reverse Polish Notation? Then show the smallest Polish and Reverse Polish Notation example you can type. Then name the trap.

Exam tip

What is Polish and Reverse Polish Notation? Show this: the smallest Polish and Reverse Polish Notation example you can type. Trap: only saying “Polish and Reverse Polish Notation” with no example.

Example

def demo(n):
    # O(1)
    x = n + 1
    # O(n)
    total = sum(range(n))
    # O(n^2)
    pairs = 0
    for i in range(n):
        for j in range(n):
            pairs += 1
    return x, total, pairs

print(demo(3))

Polish and Reverse Polish Notation — big-O describes how work grows with input size — ignore constants.

Short notes

DefPolish and Reverse Polish Notation — a short Polish and Reverse Polish Notation example in a short dry-run on paper.
Rulethe smallest Polish and Reverse Polish Notation example you can type
Traponly saying “Polish and Reverse Polish Notation” with no example
Usea short dry-run on paper

Polish and Reverse Polish Notation

From the example next to this theory: Polish and Reverse Polish Notation — big-O describes how work grows with input size — ignore constants.

Trap — only saying “Polish and Reverse Polish Notation” with no example. Fix that before you talk about advanced DSA.

Viva: what is Polish and Reverse Polish Notation? Then show the smallest Polish and Reverse Polish Notation example you can type. Then name the trap.

Exam tip

Example

def demo(n):
    # O(1)
    x = n + 1
    # O(n)
    total = sum(range(n))
    # O(n^2)
    pairs = 0
    for i in range(n):
        for j in range(n):
            pairs += 1
    return x, total, pairs

print(demo(3))

Polish and Reverse Polish Notation — big-O describes how work grows with input size — ignore constants.

Short notes

DefPolish and Reverse Polish Notation — a short Polish and Reverse Polish Notation example in a short dry-run on paper.
Rulethe smallest Polish and Reverse Polish Notation example you can type
Traponly saying “Polish and Reverse Polish Notation” with no example
Usea short dry-run on paper

Polish and Reverse Polish Notation

Example

Short notes

Questions

Polish and Reverse Polish Notation

Example

Short notes

Questions