Given a pointer to a node in a single linked list how do you delete it?

Technique:
Copy the contents of next node into the current node and then do the following things:
1) copy the next pointer into a temporary pointer
2) set current node's next to next node's next
3) delete the node pointed by temporary pointer.

Obtain the pointer to Nth last node in a single linked list.

Technique: Suppose you are given 2 buses Bus-A and Bus-B travelling always at 100mph and you have to maintain a distance of 20mps between them. Then you will achieve this by staring Bus-A first from the source station. You start Bus-B only when Bus-A is 20 miles from source station.

Given a string"My name is Girish" write a code snippet to make it "Girish is name My" (one of the optimistic ways)

This is a 2 step process:
Step 1 : Reverse the whole string "My name is Girish". It becomes "hsiriG si eman My".
Step 2: Reverse each word which makes it "Girish is name My".

Complexity: SIMPLE.