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Problem 2: Remove Duplicates from Sorted List (easy)
Problem Statement:
Given a sorted linked list, remove all the duplicate elements to leave only distinct numbers. The linked list should remain sorted, and the modified list should be returned.
Examples
Example 1:
- Input: 1 -> 1 -> 2
- Output: 1 -> 2
- Justification: Since 1 is repeated, we remove the duplicate to leave a sorted list of unique numbers.
Example 2:
- Input: 1 -> 2 -> 2 -> 3
- Output: 1 -> 2 -> 3
- Justification: Here, 2 is the duplicate element, and by removing it, we obtain a list containing only distinct elements.
Example 3:
- Input: 3 -> 3 -> 3
- Output: 3
- Justification: We remove the repeated 3s to leave a single 3 in the list.
Constraints:
- The number of nodes in the list is in the range
[0, 300]
. -100 <= Node.val <= 100
- The list is guaranteed to be sorted in ascending order.
Try it yourself
Try solving this question here:
Python3
Python3
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