Code RoomFind missing numbers
EasyPrep Room Coding #1631

Find missing numbers

CodingAlgorithms & data structuresEntry–Mid~15 min

An array of length n holds values in 1..n with some missing (and some duplicated). Return all values in 1..n that do not appear.

Implement
find_disappeared(nums: list[int]) → list[int]
Examples
in[[4,3,2,7,8,2,3,1]]out[5,6]
What a strong answer looks like

State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.

0:00 of about 15 min
InputExpectedGot
[[4,3,2,7,8,2,3,1]][5,6]not run yetsample