DSA · Theory

Design a data structure that supports insert, delete, search, and getRandom in constant time

Theory

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Design a data structure that supports insert, delete, search, and getRandom in constant time

If you can teach Design a data structure that supports insert, delete, search, and getRandom in constant time (alt) using find roll 12, you know it. If you only know the heading, you don’t.

Keep Design a data structure that supports insert, delete, search, and getRandom in constant time (alt) small. Meera should finish find roll 12 in a few lines, not a 40-line dump.

Skip Design a data structure that supports insert, delete, search, and getRandom in constant time (alt) and binary search on unsorted data shows up in a sorted list.

Meera ships Design a data structure that supports insert, delete, search, and getRandom in constant time (alt) in a sorted list. That is the use case worth saying.

Design a data structure that supports insert, delete, search, and getRandom in constant time (alt) miss: binary search on unsorted data. Fix it before you talk about advanced DSA.

Place Design a data structure that supports insert, delete, search, and getRandom in constant time (alt) next to nearby DSA work — linear vs binary is the link.

Viva for Design a data structure that supports insert, delete, search, and getRandom in constant time (alt): what it is → linear vs binary → the mistake (binary search on unsorted data).

Exam tip

For Design a data structure that supports insert, delete, search, and getRandom in constant time (alt): definition + a sorted list + one failure.

Example

# Design a data structure that supports insert, delete, search, and getRandom in constant time
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)

Design a data structure that supports insert, delete, search, and getRandom in constant time (alt) — Dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefDesign a data structure that supports insert, delete, search, and getRandom in constant time (alt) — Meera uses it for find roll 12 in a sorted list.
RuleDesign a data structure that supports insert, delete, search, and getRandom in constant time (alt) → linear vs binary.
RememberDesign a data structure that supports insert, delete, search, and getRandom in constant time (alt) + a dry-run table (a sorted list).
UseDesign a data structure that supports insert, delete, search, and getRandom in constant time (alt) in a sorted list (find roll 12).
TrapDesign a data structure that supports insert, delete, search, and getRandom in constant time (alt) — binary search on unsorted data.
ExDesign a data structure that supports insert, delete, search, and getRandom in constant time (alt) → find roll 12.

# Design a data structure that supports insert, delete, search, and getRandom in constant time 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)

Design a data structure that supports insert, delete, search, and getRandom in constant time

Example

Short notes

Questions

Design a data structure that supports insert, delete, search, and getRandom in constant time

Example

Short notes

Questions