1523. Count Odd Numbers in an Interval Range

Source code notebook Author Update time

Given two non-negative integers low and high. Return the count of odd numbers betweenlow andhigh _ (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
# @lc code=start
using LeetCode

count_odd_numbers(low::Int, high::Int) = (high - low + 1 + (low & 1)) >> 1

# @lc code=end
count_odd_numbers (generic function with 1 method)

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