/// <summary>
///
/// </summary>
public int GetMinDepth()
{
var q0 = new Queue <Node>();
var q1 = new Queue <Node>();
int depth = 0;
q0.Enqueue(_root);
while (true)
{
// iterate through nodes at the current depth and return if leaf is found
while (q0.Count > 0)
{
var node = q0.Dequeue();
if (node.IsLeaf)
{
return(depth);
}
q1.Enqueue(node.Left);
q1.Enqueue(node.Right);
}
// swap queues and continue on the next level
CoreUtil.Swap(ref q0, ref q1);
depth++;
}
}