Nth Node From the End

Complete the function in the code snippet, returning the value of $N^{th}$ node from the end of a singly linked list $A$, of length $L$. The function takes two arguments, head of the linked list and an integer $N$, and you are expected to return the answer in the form of an integer. ###Input: - First line will contain $T$, number of testcases. Then the testcases follow. - Each testcase con