1523. Count Odd Numbers in an Interval Range-在区间范围内统计奇数数目

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

Solution in python:

class Solution:
    def countOdds(self, low: int, high: int) -> int:
        if high % 2 == 1:
            return (high-low)//2 + 1
        else:
            return (high+1-low)//2