Code RoomLongest increasing subsequence
HardPrep Room Coding #1567

Longest increasing subsequence

CodingAlgorithms & data structuresSenior–Staff~35 min

Given an array of integers, return the length of the longest strictly increasing subsequence.

Implement
length_of_lis(nums: list[int]) → int
Examples
in[[10,9,2,5,3,7,101,18]]out4
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 35 min
InputExpectedGot
[[10,9,2,5,3,7,101,18]]4not run yetsample