题目描述
Given a number N. Find the minimum number of operations required to reach N starting from 0. You have 2 operations available:
Double the number
Add one to the number
Example 1:
Input:
N = 8
Output: 4
Explanation: 0 + 1 = 1, 1 + 1 = 2,
2 * 2 = 4, 4 * 2 = 8
ââ¬â¹Example 2:
Input:
N = 7
Output: 5
Explanation: 0 + 1 = 1, 1 + 1 = 2,
1 + 2 = 3, 3 * 2 = 6, 6 + 1 = 7
Your Task:
You don't need to read input or print anything. Your task is to complete the function minOperation() which accepts an integer N and return number of minimum operations required to reach N from 0.
Expected Time Complexity: O(LogN)
Expected Auxiliary Space: O(1)
Constraints:
1 <= N <= 10^{6}
输入格式
见题面
输出格式
见题面
样例输入
N = 8
样例输出
4