Turn On Bits From Position i to j (No Loop)

Question

## Problem

Set all bits between positions `i` and `j` (inclusive) to 1 in a 32-bit integer without using a loop.

## Example
```
n=0, i=2, j=5 -> 0b111100
```

## Constraints
- 0 ≤ i ≤ j ≤ 31

## Approach
mask = `((1u << (j-i+1)) - 1) << i`; `n | mask`. Reported Broadcom bit question.