DSA · Theory

In-order Traversal

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Theory

87/810

In-order Traversal

Zara only reaches for In-order Traversal when a In-order Traversal dry-run has to stay correct in a small live site.

Keep In-order Traversal small. Zara should finish a In-order Traversal dry-run in a few lines, not a 40-line dump.

Without In-order Traversal, a small live site gets messy and a In-order Traversal dry-run is hard to trust.

In-order Traversal shows up in a small live site. Name a In-order Traversal dry-run, not “a real-world scenario”.

Don’t do this with In-order Traversal: skipping the failure case for In-order Traversal. Interviewers spot it in ten seconds.

After In-order Traversal, Zara should still remember skipping the failure case for In-order Traversal.

One breath for In-order Traversal, then a In-order Traversal dry-run, then skipping the failure case for In-order Traversal. Sit down.

Exam tip

Board: a In-order Traversal dry-run. Dry-run In-order Traversal. Name the trap: skipping the failure case for In-order Traversal.

Example

# In-order Traversal
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)

In-order Traversal: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefIn-order Traversal — Zara uses it for a In-order Traversal dry-run in a small live site.
RuleIn-order Traversal → one In-order Traversal step Zara can write from memory.
RememberIn-order Traversal + time vs memory (a small live site).
UseIn-order Traversal in a small live site (a In-order Traversal dry-run).
TrapIn-order Traversal — skipping the failure case for In-order Traversal.
ExIn-order Traversal → a In-order Traversal dry-run.

DSA · Theory

In-order Traversal

← All stacks

Theory

87/810

In-order Traversal

Zara only reaches for In-order Traversal when a In-order Traversal dry-run has to stay correct in a small live site.

Keep In-order Traversal small. Zara should finish a In-order Traversal dry-run in a few lines, not a 40-line dump.

Without In-order Traversal, a small live site gets messy and a In-order Traversal dry-run is hard to trust.

In-order Traversal shows up in a small live site. Name a In-order Traversal dry-run, not “a real-world scenario”.

Don’t do this with In-order Traversal: skipping the failure case for In-order Traversal. Interviewers spot it in ten seconds.

After In-order Traversal, Zara should still remember skipping the failure case for In-order Traversal.

One breath for In-order Traversal, then a In-order Traversal dry-run, then skipping the failure case for In-order Traversal. Sit down.

Exam tip

Board: a In-order Traversal dry-run. Dry-run In-order Traversal. Name the trap: skipping the failure case for In-order Traversal.

Example

# In-order Traversal
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)

In-order Traversal: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefIn-order Traversal — Zara uses it for a In-order Traversal dry-run in a small live site.
RuleIn-order Traversal → one In-order Traversal step Zara can write from memory.
RememberIn-order Traversal + time vs memory (a small live site).
UseIn-order Traversal in a small live site (a In-order Traversal dry-run).
TrapIn-order Traversal — skipping the failure case for In-order Traversal.
ExIn-order Traversal → a In-order Traversal dry-run.

In-order Traversal

Example

Short notes

Questions

In-order Traversal

Example

Short notes

Questions