Skip to content
Related Articles

Related Articles

Python – Average of digit greater than K
  • Last Updated : 11 Oct, 2020

Given elements list, extract elements whose average of digit is greater than K.

Input : test_list = [633, 719, 8382, 119, 327], K = 5 
Output : [719, 8382] 
Explanation : (7 + 1 + 9) / 3 = 5.6 and (8 + 3 + 8 + 2) / 4 = 5.2 , both of which are greater than 5, hence returned.

Input : test_list = [633, 719, 8382, 96], K = 5 
Output : [719, 8382, 96] 
Explanation : All the elements are displayed in output whose digit average is greater than 5.

Method #1 : Using list comprehension + sum() + len()

In this, we compute digits sum using sum(), and then divide the sum by element length to get average, and add in result if it’s greater than K.



Python3




# Python3 code to demonstrate working of
# Average digit greater than K
# Using sum() + len() + list comprehension
  
# initializing list
test_list = [633, 719, 8382, 119, 327]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing K
K = 5
  
# getting average and checking if greater than K
res = [sub for sub in test_list if sum(
    [int(ele) for ele in str(sub)]) / len(str(sub)) >= K]
  
# printing result
print("Filtered List : " + str(res))

Output:

The original list is : [633, 719, 8382, 119, 327]
Filtered List : [719, 8382]

Method #2 : Using sum() + len() + filter() + lambda

Here, filtering operation is performed using filter() and lambda, rest all operations are handled as per above method.

Python3




# Python3 code to demonstrate working of
# Average digit greater than K
# Using sum() + len() + filter() + lambda
  
# initializing list
test_list = [633, 719, 8382, 119, 327]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing K
K = 5
  
# getting average and checking if greater than K
# using filter() and lambda to filter
res = list(filter(lambda sub: sum(
    [int(ele) for ele in str(sub)]) / len(str(sub)) >= K, test_list))
  
# printing result
print("Filtered List : " + str(res))

Output:

The original list is : [633, 719, 8382, 119, 327]
Filtered List : [719, 8382]

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course

My Personal Notes arrow_drop_up
Recommended Articles
Page :