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DSA · Theory

Maximum coins such that root to leaf path sum is positive

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Theory

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Maximum coins such that root to leaf path sum is positive

Maximum coins such that root to leaf path sum is positive sits in a campus project. Farhan’s job is Farhan walking through Maximum coins such that root to leaf path sum is positive. Write that first.

For Maximum coins such that root to leaf path sum is positive, Big-O is in play. Don’t blame it until you have traced Farhan walking through Maximum coins such that root to leaf path sum is positive.

Without Maximum coins such that root to leaf path sum is positive, a campus project gets messy and Farhan walking through Maximum coins such that root to leaf path sum is positive is hard to trust.

Use Maximum coins such that root to leaf path sum is positive when Farhan walking through Maximum coins such that root to leaf path sum is positive must stay clear. If a simpler DSA step works, use that instead.

Maximum coins such that root to leaf path sum is positive trap: skipping the failure case for Maximum coins such that root to leaf path sum is positive. Farhan loses marks for that every viva.

After Maximum coins such that root to leaf path sum is positive, Farhan should still remember skipping the failure case for Maximum coins such that root to leaf path sum is positive.

Viva for Maximum coins such that root to leaf path sum is positive: what it is → one Maximum coins such that root to leaf path sum is positive step Farhan can write from memory → the mistake (skipping the failure case for Maximum coins such that root to leaf path sum is positive).

Exam tip

For Maximum coins such that root to leaf path sum is positive: definition + a campus project + one failure.

Example

# Maximum coins such that root to leaf path sum is positive
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)

Maximum coins such that root to leaf path sum is positive: dry-run [4, 1, 3]. Say the list after one step.

Short notes

  • DefMaximum coins such that root to leaf path sum is positive — Farhan uses it for Farhan walking through Maximum coins such that root to leaf path sum is positive in a campus project.
  • RuleMaximum coins such that root to leaf path sum is positive → one Maximum coins such that root to leaf path sum is positive step Farhan can write from memory.
  • RememberMaximum coins such that root to leaf path sum is positive + Big-O (a campus project).
  • UseMaximum coins such that root to leaf path sum is positive in a campus project (Farhan walking through Maximum coins such that root to leaf path sum is positive).
  • TrapMaximum coins such that root to leaf path sum is positive — skipping the failure case for Maximum coins such that root to leaf path sum is positive.
  • ExMaximum coins such that root to leaf path sum is positive → Farhan walking through Maximum coins such that root to leaf path sum is positive.

Questions

1

Define Maximum coins such that root to leaf path sum is positive without jargon. Then point at Farhan walking through Maximum coins such that root to leaf path sum is positive.

2

When would Farhan actually reach for Maximum coins such that root to leaf path sum is positive?

3

What trap does Farhan hit with Maximum coins such that root to leaf path sum is positive?

4

Show Maximum coins such that root to leaf path sum is positive in Big-O terms — three lines max.

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