When are dictionaries more useful than lists ? – InterviewSolution

InterviewSolution

1.	When are dictionaries more useful than lists ?
Answer» Dictionaries can be much more useful than lists. For example : suppose we wanted to store all our friend’s cell phone numbers. We could create a list of pairs (phone number, name), but once this list becomes long enough searching this list for a specific phone number will get time consuming. Better would be if we could index the list by our friend’s name. This is precisely what a dictionary does.

Discussion

No Comment Found

Related InterviewSolutions

How are dictionaries different from lists ?
Write a code to create customer’s list with their number & name and delete any particular customer using his /her number.
Explain cmp(dict1, dict2) with example.
Explain str(dict) with example.
Write the code to input any 5 years and the population of any city and print it on the screen.
Write a program to input total number of sections and class teacher’s name in 11th class and display all information on the output screen.
Find errors from the following codes: c=dict( ) n=input(Enter total number) i=l while i<=n a=raw_input(“enter place”) b=raw_input(” enter number”) c(a)=b i=i+l print “place”,”\t”/’number” for i in c: print i,”\t”,cla[i]
Write a Python program to input ‘n’names and phone numbers to store it in a dictionary and to search and print the phone number of that particular name.
Write a Python program to input ‘n’ names and phone numbers to store it in a dictionary and to input any name and to print the phone number of the particular name.
When are dictionaries more useful than lists ?