d.velop AG Software Engineer interview questions

there are 4 rounds of interview .ops concepts , inheritance, polymorphism.Use of object oriented programming?What is workforce management system.There are Verbal, logical reasoning, quantitative, coding questions (2 Qtns) and a descriptive essay on "How you used the pendamic duration for study" ( Minimum 200 words) required. And coding questions are DSA Medium level one was: " Find the maximum profit percentage during the buy and sell of stock of a company. ".