Code RoomDelete and earn
MediumPrep Room Coding #83

Delete and earn

CodingAlgorithms & data structuresMid–Senior~20 min

You are given an integer array nums. In one operation you pick any value x present in the array, gain x points, and must then delete every occurrence of x as well as every element equal to x-1 and x+1. You repeat until the array is empty. Return the maximum total points you can earn. Values satisfy 1 <= nums[i] <= 10^4 and the array may be empty.

Implement
delete_and_earn(nums: list[int]) → int
Examples
in[[3,4,2]]out6
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 20 min
InputExpectedGot
[[3,4,2]]6not run yetsample