Code RoomMissing number in range
MediumPrep Room Coding #897

Missing number in range

CodingAlgorithms & data structuresMid–Senior~22 min

An array nums contains n distinct numbers drawn from the range [0, n] (so exactly one number in that range is missing). Return the missing number using O(n) time and O(1) extra space, modifying the input in place is allowed. Constraints: 1 <= n <= 10^4, all nums[i] distinct and in [0, n].

Implement
missing_number_cyclic(nums: list[int]) → int
Examples
in[[3,0,1]]out2
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 22 min
InputExpectedGot
[[3,0,1]]2not run yetsample