0190 - Reverse Bits

Description (leetcode)

Reverse bits of a given 32 bits signed integer.

Example 1:

Input: n = 43261596

Output: 964176192

Explanation:

Example 2:

Input: n = 2147483644

Output: 1073741822

Explanation:

Constraints:

• 0 <= n <= 2³¹ - 2
• n is even.

Follow up: If this function is called many times, how would you optimize it?

submission

// let utilize the std
impl Solution {
    pub fn reverse_bits(n: i32) -> i32 {
        n.reverse_bits()
    }
}