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DSA · Theory

Insertion at beginning

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Theory

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Insertion at beginning

Insertion at beginning (cll) is a DSA idea you prove with Insertion at beginning cll on Farhan's board, not with a slogan.

For Insertion at beginning (cll), a dry-run table is in play. Don’t blame it until you have traced Insertion at beginning cll on Farhan's board.

Insertion at beginning (cll) exists so Farhan can keep Insertion at beginning cll on Farhan's board correct in a small live site.

Use Insertion at beginning (cll) when Insertion at beginning cll on Farhan's board must stay clear. If a simpler DSA step works, use that instead.

If Insertion at beginning cll on Farhan's board breaks under Insertion at beginning (cll), check copy-pasting Insertion at beginning cll without a dry-run first.

Place Insertion at beginning (cll) next to nearby DSA work — one Insertion at beginning cll step Farhan can write from memory is the link.

Viva for Insertion at beginning (cll): what it is → one Insertion at beginning cll step Farhan can write from memory → the mistake (copy-pasting Insertion at beginning cll without a dry-run).

Exam tip

Board: Insertion at beginning cll on Farhan's board. Dry-run Insertion at beginning (cll). Name the trap: copy-pasting Insertion at beginning cll without a dry-run.

Example

# Insertion at beginning
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)

Insertion at beginning (cll) — Dry-run [4, 1, 3]. Say the list after one step.

Short notes

  • DefInsertion at beginning (cll) — Farhan uses it for Insertion at beginning cll on Farhan's board in a small live site.
  • RuleInsertion at beginning (cll) → one Insertion at beginning cll step Farhan can write from memory.
  • RememberInsertion at beginning (cll) + a dry-run table (a small live site).
  • UseInsertion at beginning (cll) in a small live site (Insertion at beginning cll on Farhan's board).
  • TrapInsertion at beginning (cll) — copy-pasting Insertion at beginning cll without a dry-run.
  • ExInsertion at beginning (cll) → Insertion at beginning cll on Farhan's board.

Questions

1

Define Insertion at beginning (cll) without jargon. Then point at Insertion at beginning cll on Farhan's board.

2

When would Farhan actually reach for Insertion at beginning (cll)?

3

Which mistake makes Insertion at beginning cll on Farhan's board fail?

4

Change one input on Insertion at beginning cll on Farhan's board. Predict the new result.

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