You have 2 arrays A and B each of size n, that contains integers from 1 to n inclusive. In one move, you can swap corresponding elements of two arrays. Determine if it is possible to have such series of operations (possibly zero) that both arrays contain integers from 1 to n exactly once, if possible print the series of operations (ie indices on which you apply the operations) and -1 if not possible.
eg
A = 3 1 2 1 2
B = 5 4 4 5 3
ans = 3 4
explanation :
after operations
A = 3 1 4 5 2
B = 5 4 2 1 3
Can someone tell me the approach/pseudocode for this?