1611. Minimum One Bit Operations to Make Integers Zero

https://leetcode.com/problems/minimum-one-bit-operations-to-make-integers-zero

Description

Given an integer n, you must transform it into 0 using the following operations any number of times:

• Change the rightmost (0th) bit in the binary representation of n.

• Change the ith bit in the binary representation of n if the (i-1)th bit is set to 1 and the (i-2)th through 0th bits are set to 0.

Return the minimum number of operations to transform n into 0.

Example 1:

**Input:** n = 0
**Output:** 0

Example 2:

**Input:** n = 3
**Output:** 2
**Explanation:** The binary representation of 3 is "11".
"11" -> "01" with the 2nd operation since the 0th bit is 1.
"01" -> "00" with the 1st operation.

Example 3:

**Input:** n = 6
**Output:** 4
**Explanation:** The binary representation of 6 is "110".
"110" -> "010" with the 2nd operation since the 1st bit is 1 and 0th through 0th bits are 0.
"010" -> "011" with the 1st operation.
"011" -> "001" with the 2nd operation since the 0th bit is 1.
"001" -> "000" with the 1st operation.

Example 4:

**Input:** n = 9
**Output:** 14

Example 5:

**Input:** n = 333
**Output:** 393

Constraints:

• 0 <= n <= 109

ac