
**Input:** A qubit in the $\ket{0}$ state.

**Goal:** Change the state of the qubit to $\ket{+} = \frac{1}{\sqrt{2}} \big(\ket{0} + \ket{1}\big)$.

<details>
  <summary><b>Need a hint?</b></summary>
  Hadamard gate $H$ will convert $\ket{0}$ state to $\ket{+}$ state.
</details>
