C# Solution - 2 Lines
\npublic class Solution \n{\n    public int MinDifference(int[] A) \n    {\n        Array.Sort(A);\n        return A.Length <= 4 ? 0 : new int[] { A[^1] - A[3],
```\npublic class Solution \n{\n    public int MinDifference(int[] A) \n    {\n        Array.Sort(A);\n        return A.Length <= 4 ? 0 : new int[] { A[^1] - A[3], A[^2] - A[2], A[^3] - A[1], A[^4] - A[0] }.Min();\n    }\n}\n```
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