Hi, \nI got this question during an interview today.\n\n```\nDesign a class, around a holiday calendar of 100 years. \n1. Class will have a function to give the number of working days between two given dates.\n\nNote:  you are given a holiday list\n\n```\n\nInitially gave 2 different O(n) solution but then with some hints I gave a log(n) solution.\n\nLet\'s hope for the best :)

Hi, \nI got this question during an interview today.\n\n\nDesign a class, around a holiday calendar of 100 years. \n1. Class will have a function to give the nu