1523. Count Odd Numbers in an Interval Range

Easy
​
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
​

解題

Runtime: 0 ms, faster than 100.00%
Memory Usage: 2 MB, less than 26.16%
func countOdds(low int, high int) int {
if low%2==0 && high%2==0 {
return (high-low)/2
}
return (high-low)/2 + 1
}