Python : Count Numbers With Unique Digits

Video 86: In this video, we explore how to count numbers with unique digits. Given two positive integers, 'a' and 'b', the task is to return the count of numbers having unique digits in the range [a, b] (inclusive). Throughout this video, we guide you through the fundamentals of Python that are essential to solving this problem: 1. Converting an integer to a string. 2. Concatenating strings. 3. Checking if a character exists in a given string or list. 4. Converting a string or integer to a list. Utilizing these concepts, we approach the problem in four different ways. In the first two approaches, we convert the integer to a string, iterate through it one character at a time, and then check for duplicates. In the third approach, we use the MOD function without converting the integer, checking for duplicate digits in the number. Finally, we use a simple SET() function to determine if the given number has unique digits. For an in-depth understanding of these Python code, please refer to the comprehensive explanatory video. code: https://github.com/jeganpillai/python_reference/blob/main/p0038_count_numbers_with_unique_digits.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/ 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