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Python dictionary, set and counter to check if frequencies can become same
When it is required to check if the frequency of a dictionary, set and counter are same, the Counter package is imported and the input is converted into a ‘Counter’. The values of a dictionary are converted to a ‘set’ and then to a list. Based on the length of the input, the output is displayed on the console.
Below is the demonstration of the same −
Example
from collections import Counter
def check_all_same(my_input):
my_dict = Counter(my_input)
input_2 = list(set(my_dict.values()))
if len(input_2)>2:
print('The frequencies are not same')
elif len (input_2)==2 and input_2[1]-input_2[0]>1:
print('The frequencies are not same')
else:
print('The frequencies are same')
my_str = 'xxxyyyzzzzzz'
print("The string is :")
print(my_str)
check_all_same(my_str)
Output
The string is : xxxyyyzzzzzz The frequencies are not same
Explanation
The required packages are imported.
A method is defined that takes one input as parameter.
The input is converted to a Counter and assigned to a variable.
The values of a dictionary are accessed using the ‘.values’ method, and is converted to a list.
It is again converted to a list, and is assigned to a variable.
If the length of the input is greater than 2, it means the frequencies don’t match.
Otherwise, if the length of the input is 2 and the difference between second and first index is greater than 1, it means the frequency is not same.
Else it means the frequency is same.
Outside the method, a string is defined, and the method is called by passing this string.
The output is displayed on the console.
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