Given two binary trees `original`

and `cloned`

and given a reference to a node `target`

in the original tree.

The `cloned`

tree is a **copy of** the `original`

tree.

Return *a reference to the same node* in the `cloned`

tree.

**Note** that you are **not allowed** to change any of…

*Big O notation is the language we use for talking about how long an algorithm takes to run.* It’s how we compare the efficiency of different approaches to a problem.

With big O notation we express the runtime in terms of *how quickly it grows relative to the input, as…*

The process for admissions in 23 IITs, 31 NITs, 26 IIITs and 29 Other-Government Funded Technical Institutes (Other-GFTIs) is managed by JoSAA (Joint Seat Allocation Authority), and the process is popularly known as JoSAA counselling. …