Project Engineer

Given the head node of the singly linked list and an integer ‘k’, , find the value at the kth node from the end of the linked list.

For example:

For the above-linked list, if k=2, then the value at the kth i.e second node from the end is ‘12’.

Note :

1.You don’t need to take any input. It has already been taken care of. Just implement the given function and return a pointer pointing to the k-th element from the last of the linked list.
2.It is guaranteed that k<=size of the linked list.

You are given an integer ‘NUM’ . Your task is to find out whether this number is an Armstrong number or not.

A k-digit number ‘NUM’ is an Armstrong number if and only if the k-th power of each digit sums to ‘NUM’.

Example

153 = 1^3 + 5^3 + 3^3.

Therefore 153 is an Armstrong number.

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