"Given an integer array nums , return true if any value appears at least twice in the array, and return false if every element is distinct. " My first approach was to use a list class Solution : def containsDuplicate ( self , nums : List [ int ]) -> bool : container = [] for elem in nums : if ele...
Source: [Dev.to](https://dev.to/monamoxie/the-hidden-cost-of-a-line-of-code-3c5b)