Given a non-negative number N and two values L and R. The problem is to set all the bits in the range L to R in the binary representation of N.
Example 1:
Input :
N = 17, L = 2, R = 3
Output :
23
Explanation:
(17){10} = (10001)
(23){10} = (10111)
The bits in the range 2 to 3 in the binary
representation of 17 are set.
Example 2:
Input :
N = 8, L = 1, R = 2
Output :
11
Explanation:
(8){10} = (1000)
(11){10} = (1011)
The bits in the range 2 to 3 in the binary
representation of 8 are set.
Your Task:
You don't need to read input or print anything. Your task is to complete the function setAllRangeBits() which takes an Integer N as input and returns the answer.
Expected Time Complexity: O(1)
Expected Auxiliary Space: O(1)
Constraints:
1 <= N <= 10^{8}

见题面

见题面