817. Linked List Components LeetCode Solution | Easy Approach

Minimum Cost to Merge Stones
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Linked List Components You are given the head of a linked list containing unique integer values and an integer array nums that is a subset of the linked list values.

Return the number of connected components in nums where two values are connected if they appear consecutively in the linked list.

Example 1:

Input: head = [0,1,2,3], nums = [0,1,3]
Output: 2
Explanation: 0 and 1 are connected, so [0, 1] and [3] are the two connected components.

Example 2:

Input: head = [0,1,2,3,4], nums = [0,3,1,4]
Output: 2
Explanation: 0 and 1 are connected, 3 and 4 are connected, so [0, 1] and [3, 4] are the two connected components.

Constraints:

  • The number of nodes in the linked list is n.
  • 1 <= n <= 104
  • 0 <= Node.val < n
  • All the values Node.val are unique.
  • 1 <= nums.length <= n
  • 0 <= nums[i] < n
  • All the values of nums are unique.

Linked List Components Solutions

Time: O(n)
Space: O(n)

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