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Python – Sort a List by Factor count
When it is required to sort a list by factor count, a method is defined that uses list comprehension and modulus operator along with ‘len’ method to determine the output.
Example
Below is a demonstration of the same −
def factor_count(element):
return len([element for index in range(1, element) if element % index == 0])
my_list = [121, 1120, 13540, 221, 1400]
print("The list is :")
print(my_list)
my_list.sort(key=factor_count)
print("The result is :")
print(my_list)Output
The list is : [121, 1120, 13540, 221, 1400] The result is : [121, 221, 13540, 1120, 1400]
Explanation
A method named ‘factor_count’ is defined that takes element of list as a parameter, and returns output.
Outside the method, a list is defined and displayed on the console.
The list is sorted using ‘sort’ method and the key is specified as the previously defined method.
This is the output that is displayed on the console.
Updated on: 08-Sep-2021
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