Given two integer arrays nums1 and nums2, return an array of their intersection. Each element in the result must be unique and you may return the result in any order.
(intersection : The intersection of two arrays is defined as the set of elements that are present in both arrays.)
Input: nums1 = [4,9,5], nums2 = [9,4,9,8,4]
Output: [9,4]
Explanation: [4,9] is also accepted.
Constraints:
1 <= nums1.length, nums2.length <= 1000
0 <= nums1[i], nums2[i] <= 1000
Solution
C# Solution
Solution1
public class Solution {
public int[] Intersection(int[] nums1, int[] nums2) {
int[] disNums1 = nums1.Distinct().ToArray();
int[] disNums2 = nums2.Distinct().ToArray();
List<int>res = new List<int>();
foreach (int num in disNums1)
{
if (disNums2.Contains(num))
{
res.Add(num);
}
}
return res.ToArray();
}
}
In this solution, we use LINQ’s Distinct method to obtain the unique elements from both arrays. Then, we iterate through one array to check for common elements in the other array, and finally return the intersection as an array.
Conclusion
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