public void firstDuplicateTest()
{
var f = new FirstDuplicate();
Assert.AreEqual(3, f.firstDuplicate(new[] { 2, 3, 3, 1, 5, 2 }));
Assert.AreEqual(-1, f.firstDuplicate(new[] { 2, 4, 3, 5, 1 }));
Assert.AreEqual(-1, f.firstDuplicate(new[] { 1 }));
Assert.AreEqual(2, f.firstDuplicate(new[] { 2, 2 }));
Assert.AreEqual(-1, f.firstDuplicate(new[] { 2, 1 }));
Assert.AreEqual(-1, f.firstDuplicate(new[] { 2, 1, 3 }));
Assert.AreEqual(3, f.firstDuplicate(new[] { 2, 3, 3 }));
Assert.AreEqual(3, f.firstDuplicate(new[] { 3, 3, 3 }));
Assert.AreEqual(6, f.firstDuplicate(new[] { 8, 4, 6, 2, 6, 4, 7, 9, 5, 8 }));
Assert.AreEqual(-1, f.firstDuplicate(new[] { 10, 6, 8, 4, 9, 1, 7, 2, 5, 3 }));
}
public void Test1()
{
var result = FirstDuplicate.firstDuplicate(new[] { 2, 1, 3, 4, 3, 2 });
Assert.AreEqual(3, result);
}
public void Test8()
{
var result = FirstDuplicate.firstDuplicate(new[] { 3, 3, 3 });
Assert.AreEqual(3, result);
}
public void Test11()
{
var result = FirstDuplicate.firstDuplicate(new[] { 1, 1, 2, 2, 1 });
Assert.AreEqual(1, result);
}
public void Test4()
{
var result = FirstDuplicate.firstDuplicate(new[] { 2, 1 });
Assert.AreEqual(-1, result);
}
