Given Tuple list, compute bidirectional tuples.
Input : test_list = [(5, 6), (1, 2), (6, 5), (9, 1), (6, 5), (2, 1)]
Output : 3
Explanation : (1, 2), (2, 1); (5, 6) -> [(6, 5), (6, 5)], total 3 pairs.Input : test_list = [(5, 6), (1, 3), (6, 5), (9, 1), (6, 5), (2, 1)]
Output : 2
Explanation : (5, 6) -> [(6, 5), (6, 5)], total 2 pairs.
Method : Using loop
In this we check for each element if we have any other element which is bidirectional, Once the pair is found, counter is incremented.
Python3
# Python3 code to demonstrate working of# Count Bidirectional Tuple Pairs# Using loop # initializing listtest_list = [(5, 6), (1, 2), (6, 5), (9, 1), (6, 5), (2, 1)] # printing original listprint("The original list is : " + str(test_list)) res = 0for idx in range(0, len(test_list)): for iidx in range(idx + 1, len(test_list)): # checking bidirection if test_list[iidx][0] == test_list[idx][1] and test_list[idx][1] == test_list[iidx][0]: res += 1 # printing resultprint("Bidirectional pairs count : " + str(res)) |
Output:
The original list is : [(5, 6), (1, 2), (6, 5), (9, 1), (6, 5), (2, 1)]
Bidirectional pairs count : 3
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course
