DSA · Theory

RL Rotation

Theory

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If you can teach RL Rotation using RL Rotation on Zara's board, you know it. If you only know the heading, you don’t.

Do RL Rotation once by hand. one RL Rotation step Zara can write from memory. Change one input. Say the new result out loud.

RL Rotation exists so Zara can keep RL Rotation on Zara's board correct in a campus project.

Use RL Rotation when RL Rotation on Zara's board must stay clear. If a simpler DSA step works, use that instead.

Don’t do this with RL Rotation — only reciting the name of RL Rotation. Interviewers spot it in ten seconds.

RL Rotation is not a lonely heading. Zara ties it to RL Rotation on Zara's board.

One breath for RL Rotation, then RL Rotation on Zara's board, then only reciting the name of RL Rotation. Sit down.

Exam tip

Say RL Rotation in one breath, then one RL Rotation step Zara can write from memory, then only reciting the name of RL Rotation.

# RL Rotation
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)

RL Rotation: dry-run [4, 1, 3]. Say the list after one step.

DefRL Rotation — Zara uses it for RL Rotation on Zara's board in a campus project.
RuleRL Rotation → one RL Rotation step Zara can write from memory.
RememberRL Rotation + time vs memory (a campus project).
UseRL Rotation in a campus project (RL Rotation on Zara's board).
TrapRL Rotation — only reciting the name of RL Rotation.
ExRL Rotation → RL Rotation on Zara's board.