Python: Make Zero Array By Subtracting | Python Interview Questions | DE Interview Questions | DS

Video 169: In this video, we are going to make a Zero array by subtracting equal amounts. Given a non-negative integer array, the task is to perform operations such that every element in the array becomes zero. Each operation involves subtracting a positive integer from every positive element in the array. We need to determine the minimum number of operations required to achieve this goal. *** Approach 1: General FOR loop with brute force method *** In this approach, we iterate through the array to find the minimum positive non-zero element. We then subtract this minimum value from every positive element in the array and repeat until all elements become zero. This method uses a brute force approach but provides a straightforward solution to the problem. *** Approach 2: Simplify the brute force method *** This approach simplifies the first approach by using list comprehension to find the minimum positive non-zero element. We continue subtracting the minimum value from every positive element until all elements become zero. While still relying on a brute force strategy, this approach streamlines the code by using list comprehensions. *** Approach 3: Simple algorithm to find the operations *** The third approach takes a different route by leveraging Python's set operations. We convert the array into a set and subtract the set containing only zero. The resulting set represents all non-zero elements in the array. The length of this set corresponds to the minimum number of operations needed to reduce all elements to zero. For a comprehensive understanding and practical demonstration, be sure to watch the entire video. Happy coding! code: https://github.com/jeganpillai/python_reference/blob/main/p0064_make_zero_array_by_subtracting.py Follow me on, Website : https://growwithdata.co/ YouTube : https://www.youtube.com/@growwithdata TikTok : https://www.tiktok.com/@growwithdata LinkedIn : https://www.linkedin.com/company/growwithdata/ Facebook : https://www.facebook.com/growwithdata.co/ FB Group : facebook.com/groups/datainterviewpreparation twitter : https://twitter.com/growwithdata_co WhatsApp : https://whatsapp.com/channel/0029VaF8pkb77qVNfbp5pA0S Instagram : https://www.instagram.com/growwithdata.co/ #recursive #countingalgorithm #list #looping #listmanipulation #uniquesubstring #longestsubstring #slicing #lineartimecomplexity #python #pythonquestions #pythontest #pythonprogramming #pythontutorial #python3 #pythonforbeginners #interviewquestions #interview #dataengineers #deinterview #pythoninterview #interviewquestions #leetcode #placementpreparation #meta #google #facebook #apple #netflix #amazon #google #faang #maanga #dataengineers #alphanumeric #nonalphanumeric #growwithdata #set #split #remove #pythonfunctions #tamil #tamilpython #tamilinterview #tamilinterviewlatest #PythonInterviewQuestions #PythonInterviewQuestionsAndAnswers #ImportantPythonInterviewQuestions #PrepareForPythonJobs #PythonJobInterviewPreparation #TopPythonInterviewQuestions #CommonPythonInterviewQuestions #growwithdata