When it is required to sort by a particular digit count in elements, a method is defined that takes list element as parameter and uses the ‘count’ and ‘str’ methods to determine the results.
Below is a demonstration of the same −
Example
def sort_count_digits(elements):
return str(elements).count(str(my_key))
my_list = [4522, 2452, 1233, 2465]
print("The list is :")
print(my_list)
my_key = 2
print("The value of key is ")
print(my_key)
my_list.sort(key = sort_count_digits)
print("The result is :")
print(my_list)Output
The list is : [4522, 2452, 1233, 2465] The value of key is 2 The result is : [1233, 2465, 4522, 2452]
Explanation
A method named ‘sort_count_digits‘ is defined that takes a list element as a parameter.
It converts the element into a string and gets the count of it.
This is returned as output.
A list is defined and displayed on the console.
The value for K is defined and is displayed on the console.
The list is sorted and the key is specified as the method which was previously defined.
This list is the output that is displayed on the console.