1523. Count Odd Numbers in an Interval Range --------E

Q:

Given two non-negative integers low and high. Return the count of odd numbers between low and high (inclusive).

 

Example 1:

Input: low = 3, high = 7
Output: 3
Explanation: The odd numbers between 3 and 7 are [3,5,7].

Example 2:

Input: low = 8, high = 10
Output: 1
Explanation: The odd numbers between 8 and 10 are [9].

 

Constraints:

• 0 <= low <= high <= 10^9

A:

class Solution {
public:
    int countOdds(int low, int high) {
        int len = high - low +1;
        if(len % 2 == 1 && low %2 == 1){
                return 1 + len/2;
        }
         return len/2;
    }
};