public void TestWithInvalidInput()
{
var target = new ConstructBinaryTreefromInorderandPostorderTraversal_106();
Assert.Null(target.BuildTree(null, new[] { 9, 15, 7, 20, 3 }));
Assert.Null(target.BuildTree(new[] { 9, 3, 15, 20 }, new[] { 9, 15, 7, 20, 3 }));
Assert.Throws <ArgumentException>(() => target.BuildTree(new[] { 9, 3, 15, 20, 16 }, new[] { 9, 15, 7, 20, 3 }));
Assert.Throws <ArgumentException>(() => target.BuildTree(new[] { 9, 3, 15, 18, 7 }, new[] { 9, 15, 7, 20, 3 }));
}
public void TestWithSample()
{
var target = new ConstructBinaryTreefromInorderandPostorderTraversal_106();
var root = target.BuildTree(new[] { 9, 3, 15, 20, 7 }, new[] { 9, 15, 7, 20, 3 });
Assert.Equal(3, root.val);
Assert.Equal(9, root.left.val);
Assert.True(root.left.IsLeaf);
Assert.Equal(20, root.right.val);
Assert.Equal(15, root.right.left.val);
Assert.True(root.right.left.IsLeaf);
Assert.Equal(7, root.right.right.val);
Assert.True(root.right.right.IsLeaf);
}