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DSA · Theory

Check if the Given String of Words can be Formed from Words Present in the Dictionary

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Theory

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Check if the Given String of Words can be Formed from Words Present in the Dictionary

Don’t start Check if the Given String of Words can be Formed from Words Present in the Dictionary with jargon. Start with name → phone. That is the whole point.

Check if the Given String of Words can be Formed from Words Present in the Dictionary on the board: key % size + collision plan. Then say what name → phone looks like after.

Without Check if the Given String of Words can be Formed from Words Present in the Dictionary, a diary gets messy and name → phone is hard to trust.

Use Check if the Given String of Words can be Formed from Words Present in the Dictionary when name → phone must stay clear. If a simpler DSA step works, use that instead.

Don’t do this with Check if the Given String of Words can be Formed from Words Present in the Dictionary: bad hash → pile-up. Interviewers spot it in ten seconds.

Check if the Given String of Words can be Formed from Words Present in the Dictionary is not a lonely heading. Dev ties it to name → phone.

One breath for Check if the Given String of Words can be Formed from Words Present in the Dictionary, then name → phone, then bad hash → pile-up. Sit down.

Exam tip

Board: name → phone. Dry-run Check if the Given String of Words can be Formed from Words Present in the Dictionary. Name the trap: bad hash → pile-up.

Example

# Check if the Given String of Words can be Formed from Words Present in the Dictionary
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)

Check if the Given String of Words can be Formed from Words Present in the Dictionary: dry-run [4, 1, 3]. Say the list after one step.

Short notes

  • DefCheck if the Given String of Words can be Formed from Words Present in the Dictionary — Dev uses it for name → phone in a diary.
  • RuleCheck if the Given String of Words can be Formed from Words Present in the Dictionary → key % size + collision plan.
  • RememberCheck if the Given String of Words can be Formed from Words Present in the Dictionary + time vs memory (a diary).
  • UseCheck if the Given String of Words can be Formed from Words Present in the Dictionary in a diary (name → phone).
  • TrapCheck if the Given String of Words can be Formed from Words Present in the Dictionary — bad hash → pile-up.
  • ExCheck if the Given String of Words can be Formed from Words Present in the Dictionary → name → phone.

Questions

1

Define Check if the Given String of Words can be Formed from Words Present in the Dictionary without jargon. Then point at name → phone.

2

Where does Check if the Given String of Words can be Formed from Words Present in the Dictionary show up in a diary?

3

Viva: one wrong answer people give for Check if the Given String of Words can be Formed from Words Present in the Dictionary.

4

Dry-run key % size + collision plan and say the result.

Previous← Check if a Binary Tree is a Subtree of Another Binary TreeNextCount sort vs bucket sort →
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