bro i am currenly going to 3rd year I learned python dsa concepts and started my journey with python learning python only helps me to place in company or any other skills required other then python bro? please tell some of my friends told me to learn java but I have not interest to learn it bro please put an video about how u place in company by the python skills bro
Yes bro you are correct... But In the question only proper roman numeral is given as inputs..... If the question is to check whether roman numeral is correct or not before converting it into integer we need to check before whether the roman numeral is given properly.... But for the given question in the leetcode the code is correct... In context of your point the code is wrong we need to check whether roman numeral is correct or not... It is bit time consuming to include if not asked... If question included we need to check whether the roman numeral correct or not ...
def matched(s): stack=[] b='{}[]()' if len(s)==0: return "True" if s[0] in b: stack.append(s[0]) for i in s[1:]: if i in b: if len(stack)!=0: if (stack[-1]=='(' and i==')')or(stack[-1]=='[' and i==']')or(stack[-1]=='{' and i=='}'): stack.pop() else: stack.append(i) else: stack.append(i) if len(stack)==0: return "True" else: return "False"
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Awesome explanation...looking forward to more content..subscribed Python interview questions with explanations ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Rp5vb_a29Ys.htmlsub_confirmation=1
Hi Vasanth ,First of all a great video about link list in tamil. Here are some points or main reason to consider using linked list: 1. Insertion time in link list is O(1). Whereas in array when we insert an element in front or middle we have to move all other elements towards end which in worst case take O(N). 2.Not only link list even we have dynamic array which allows us to create as many elements as possible. Example Vector in cpp. 3.Example when you have to consider link list while designing a browsers front and back mechanism we can go with doubly link list.Whereas while storing streams of data we can go with arrays. Keep up the great work.
