RT. I have a problem with this input :
What does the # mean? Does it represent a null node? If it does, why should it appear in the middle of the list? Based on my understanding, I think the list is :
-1 -> 8 -> 7 -> -3 -> 4 -> 4 -> -3 -> null -> null -> -1
Does this list make sense? A null node can have a next pointer? I am quite confused and any explanation is appreciated. Thank you guys!!