DSA · Theory

Rat in a Maze problem

Theory

738/810

Rat in a Maze problem

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

Smallest example: the smallest Rat in a Maze problem example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Rat in a Maze problem.

From the example next to this theory — Rat in a Maze problem: dry-run [4, 1, 3].

Trap — only saying “Rat in a Maze problem” with no example. Fix that before you talk about advanced DSA.

Viva: what is Rat in a Maze problem? Then show the smallest Rat in a Maze problem example you can type. Then name the trap.

Exam tip

What is Rat in a Maze problem? Show this: the smallest Rat in a Maze problem example you can type. Trap: only saying “Rat in a Maze problem” with no example.

Example

# Rat in a Maze problem
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Rat in a Maze problem: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefRat in a Maze problem — a short Rat in a Maze problem example in a short dry-run on paper.
Rulethe smallest Rat in a Maze problem example you can type
Traponly saying “Rat in a Maze problem” with no example
Usea short dry-run on paper

DSA · Theory

Rat in a Maze problem

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Theory

738/810

Rat in a Maze problem

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

Smallest example: the smallest Rat in a Maze problem example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Rat in a Maze problem.

From the example next to this theory — Rat in a Maze problem: dry-run [4, 1, 3].

Trap — only saying “Rat in a Maze problem” with no example. Fix that before you talk about advanced DSA.

Viva: what is Rat in a Maze problem? Then show the smallest Rat in a Maze problem example you can type. Then name the trap.

Exam tip

What is Rat in a Maze problem? Show this: the smallest Rat in a Maze problem example you can type. Trap: only saying “Rat in a Maze problem” with no example.

Example

# Rat in a Maze problem
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Rat in a Maze problem: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefRat in a Maze problem — a short Rat in a Maze problem example in a short dry-run on paper.
Rulethe smallest Rat in a Maze problem example you can type
Traponly saying “Rat in a Maze problem” with no example
Usea short dry-run on paper

Rat in a Maze problem

Example

Short notes

Questions

Rat in a Maze problem

Example

Short notes

Questions