# Problem 45

## Description

This problem was asked by Two Sigma.

Using a function `rand5()`

that returns an integer from `1`

to `5`

(inclusive) with uniform probability, implement a function `rand7()`

that returns an integer from `1`

to `7`

(inclusive).

## Kotlin Solutions

假設題目是

```
class Solution : SolBase() {
fun rand7(): Int {
}
}
```