Given two Lists of Integers, return a List containing elements that appear in both lists (intersection). The result should be sorted in ascending order with no duplicate values.
Examples:
Input: list1 = [1, 2, 3, 4], list2 = [3, 4, 5, 6]
Output: [3, 4]
Explanation: Elements 3 and 4 appear in both lists
Input: list1 = [1, 2, 2, 3], list2 = [2, 2, 3, 4]
Output: [2, 3]
Explanation: Elements 2 and 3 are common, returned without duplicates
Input: list1 = [1, 2, 3], list2 = [4, 5, 6]
Output: []
Explanation: No common elements between the lists
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