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Python – Sort String list by K character frequency
When it is required to sort a list of strings based on the ‘K’ number of character frequency, the ‘sorted’ method, and the lambda function is used.
Example
Below is a demonstration of the same −
my_list = ['Hi', 'Will', 'Jack', 'Python', 'Bill', 'Mills', 'goodwill']
print("The list is : " )
print(my_list)
my_list.sort()
print("The list after sorting is ")
print(my_list)
K = 'l'
print("The value of K is ")
print(K)
my_result = sorted(my_list, key = lambda ele: -ele.count(K))
print("The resultant list is : ")
print(my_result)Output
The list is : ['Hi', 'Will', 'Jack', 'Python', 'Bill', 'Mills', 'goodwill'] The list after sorting is ['Bill', 'Hi', 'Jack', 'Mills', 'Python', 'Will', 'goodwill'] The value of K is l The resultant list is : ['Bill', 'Mills', 'Will', 'goodwill', 'Hi', 'Jack', 'Python']
Explanation
A list of strings is defined, and is displayed on the console.
The list is sorted ascending order, and displayed on the console.
The value of ‘K’ is initialized and displayed on the console.
The list is sorted using the ‘sorted’ method, and the key is specified as the lambda function.
This is assigned to a variable which is displayed on the console.
Updated on: 07-Sep-2021
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