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Python - Total equal pairs in List
When it is required to find the total equal pairs in a list, the ‘set’ operator and the ‘//’ operator along with an iteration can be used.
Example
Below is a demonstration of the same
my_list = [34, 56, 12, 32, 78, 99, 67, 34, 52, 78, 99, 10, 0, 11, 23,9]
print("The list is :")
print(my_list)
all_elems = set(my_list)
my_result = 0
for elements in all_elems:
my_result += my_list.count(elements) // 2
print("The total pairs are :")
print(my_result)Output
The list is : [34, 56, 12, 32, 78, 99, 67, 34, 52, 78, 99, 10, 0, 11, 23, 9] The total pairs are : 3
Explanation
A list is defined and is displayed on the console.
The list is converted into a set and assigned to a variable.
An integer is assigned the value of 0.
The elements in the set are iterated over, and the ‘//’ operator is used.
This is added to the result.
This is the output that is displayed on the console.
Updated on: 15-Sep-2021
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