Tackle in-place linked list manipulations for efficient and memory-optimized operations.

Coding

In-place manipulation of a linked list refers to modifying the linked list directly by changing the pointers (links) between existing nodes, without creating a new linked list or using extra data structures that grow with the input size.

In-Place Manipulation of a Linked List

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Behavioral

# Statement

Given the `head` of a linked list and an integer, `k`, return the head of the linked list after swapping the values of the $k^{th}$ node from the beginning and the $k^{th}$ node from the end of the linked list.

> **Note:** We'll number the nodes of the linked list starting from $1$ to $n$.

**Constraints:**

* The linked list will have `n` number of nodes.
* $1 \leq$ `k` $\leq$ `n` $\leq 500$
* $-5000 \leq$ `Node.value` $\leq 5000$

Let's solve the Swapping Nodes in a Linked List problem using the In-Place Manipulation of a Linked List pattern.

Solution: Swapping Nodes in a Linked List

Statement▼

Solution

The three-pass approach

Solution: Swapping Nodes in a Linked List

Statement▼

Solution

The three-pass approach