问简化包含多个或涉及同一变量的if语句？

EN

if (new[] {a,b,c,d}.Any(current => current > x))

if (new[] {a,b,c,d}.Any(current => x.Contains(current)))

var tests = new int[] { a, b, c, d };

if (tests.Any(y => y > x)) { }

if (tests.Any(y => x.Contains(y))) { }

if (tests.All(y => y > x)) { }

if (tests.All(y => x.Contains(y))) { }

public static class LinqExtension
{
    public static bool ContainsAny<TInput>(this IEnumerable<TInput> @this, IList<TInput> items)
    {
        return @this.Any(items.Contains);
    }
}