Challenge 3: Find Symmetric Pairs in an Array

Problem statement

By definition, (a, b) and (c, d) are symmetric pairs if a = d and b = c. In this problem, you have to implement the string findSymmetric(int [,]arr, int size) function, which will find all the symmetric pairs in the given array.

Input

This is a 2-D array and the number of rows in the array.

📝 The first value in the pair should be unique.

Output

It is a string containing all the symmetric pairs of integers in the input array.

Sample input

arr = {{3, 4}, {3, 2}, {5, 9}, {4, 3}, {9, 5}}
size = 5

Sample output

{3, 4}{4, 3}{5, 9}{9, 5}