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g0001_0100.s0086_partition_list.readme.md Maven / Gradle / Ivy

86\. Partition List

Medium

Given the `head` of a linked list and a value `x`, partition it such that all nodes **less than** `x` come before nodes **greater than or equal** to `x`.

You should **preserve** the original relative order of the nodes in each of the two partitions.

**Example 1:**

![](https://assets.leetcode.com/uploads/2021/01/04/partition.jpg)

**Input:** head = [1,4,3,2,5,2], x = 3

**Output:** [1,2,2,4,3,5] 

**Example 2:**

**Input:** head = [2,1], x = 2

**Output:** [1,2] 

**Constraints:**

*   The number of nodes in the list is in the range `[0, 200]`.
*   `-100 <= Node.val <= 100`
*   `-200 <= x <= 200`