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DSA · Theory

Check if a given array contains duplicate elements within k distance from each other

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Theory

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Check if a given array contains duplicate elements within k distance from each other

If you can teach Check if a given array contains duplicate elements within k distance from each other using Check if a given array contains duplicate elements within k distance from each other on Zara's board, you know it. If you only know the heading, you don’t.

Do Check if a given array contains duplicate elements within k distance from each other once by hand. one Check if a given array contains duplicate elements within k distance from each other step Zara can write from memory. Change one input. Say the new result out loud.

Skip Check if a given array contains duplicate elements within k distance from each other and skipping the failure case for Check if a given array contains duplicate elements within k distance from each other shows up in a viva board.

Use Check if a given array contains duplicate elements within k distance from each other when Check if a given array contains duplicate elements within k distance from each other on Zara's board must stay clear. If a simpler DSA step works, use that instead.

Check if a given array contains duplicate elements within k distance from each other trap: skipping the failure case for Check if a given array contains duplicate elements within k distance from each other. Zara loses marks for that every viva.

Place Check if a given array contains duplicate elements within k distance from each other next to nearby DSA work — one Check if a given array contains duplicate elements within k distance from each other step Zara can write from memory is the link.

One breath for Check if a given array contains duplicate elements within k distance from each other, then Check if a given array contains duplicate elements within k distance from each other on Zara's board, then skipping the failure case for Check if a given array contains duplicate elements within k distance from each other. Sit down.

Diagram
  index →  0    1    2
  array → [10,  20,  30]
Exam tip

For Check if a given array contains duplicate elements within k distance from each other: definition + a viva board + one failure.

Example

arr = [10, 20, 30, 40]
print(arr[2], arr[-1])
matrix = [[1, 2], [3, 4]]
print(matrix[1][0])  # 3

Check if a given array contains duplicate elements within k distance from each other — arrays give O(1) index access; matrices are arrays of arrays.

Short notes

  • DefCheck if a given array contains duplicate elements within k distance from each other — Zara uses it for Check if a given array contains duplicate elements within k distance from each other on Zara's board in a viva board.
  • RuleCheck if a given array contains duplicate elements within k distance from each other → one Check if a given array contains duplicate elements within k distance from each other step Zara can write from memory.
  • RememberCheck if a given array contains duplicate elements within k distance from each other + a dry-run table (a viva board).
  • UseCheck if a given array contains duplicate elements within k distance from each other in a viva board (Check if a given array contains duplicate elements within k distance from each other on Zara's board).
  • TrapCheck if a given array contains duplicate elements within k distance from each other — skipping the failure case for Check if a given array contains duplicate elements within k distance from each other.
  • ExCheck if a given array contains duplicate elements within k distance from each other → Check if a given array contains duplicate elements within k distance from each other on Zara's board.

Questions

1

What is Check if a given array contains duplicate elements within k distance from each other? Teach it with Check if a given array contains duplicate elements within k distance from each other on Zara's board.

2

When would Zara actually reach for Check if a given array contains duplicate elements within k distance from each other?

3

How do you catch skipping the failure case for Check if a given array contains duplicate elements within k distance from each other?

4

Change one input on Check if a given array contains duplicate elements within k distance from each other on Zara's board. Predict the new result.

Previous← Separate chaining for Collision HandlingNextGiven an array A[] and a number x, check for pair in A[] with sum as x (aka Two Sum) →
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