Given a sorted circular linked list of length n, the task is to insert a new node in this circular list so that it remains a sorted circular linked list.Example 1:
Question
Given a sorted circular linked list of length n, the task is to insert a new node in this circular list so that it remains a sorted circular linked list.Example 1:
Solution
Sure, here is a step-by-step guide on how to insert a new node into a sorted circular linked list:
-
Create a new node. Let's call it
temp. -
If the circular linked list is empty, make the new node a self-loop and return.
-
Initialize a pointer
currentto the head of the linked list. -
If the new node needs to be inserted at the beginning:
- While
currentis pointing to the last node of the list (i.e.,current->next != head), movecurrentalong the list. - Make
current->next = temp. - Make
temp->next = head. - Update
head = temp.
- While
-
If the new node needs to be inserted in the middle:
- Find a node in the list after which the new node is to be inserted. To find this node, start from head and find the first node which is not smaller than the new node. Let's call this node
current. - While
current->nextis smaller thantempandcurrent->nextis not pointing to the head, movecurrentalong the list. - Make
temp->next = current->nextandcurrent->next = temp.
- Find a node in the list after which the new node is to be inserted. To find this node, start from head and find the first node which is not smaller than the new node. Let's call this node
-
If the new node needs to be inserted at the end:
- While
currentis pointing to the last node of the list (i.e.,current->next != head), movecurrentalong the list. - Make
current->next = temp. - Make
temp->next = head.
- While
This way, the new node is inserted into the sorted circular linked list while maintaining the sorted order.
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