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// @Title: 旋转数组的最小数字 (旋转数组的最小数字  LCOF)
// @Author: 15816537946@163.com
// @Date: 2022-02-09 00:16:03
// @Runtime: 0 ms
// @Memory: 2 MB


impl Solution {
    pub fn min_array(numbers: Vec<i32>) -> i32 {
        let (mut le, mut ri) = (0, numbers.len() - 1);

        while le < ri {
            let mid = (le + ri) / 2;
            match numbers[mid].cmp(&numbers[ri]) {
                std::cmp::Ordering::Less => ri = mid,
                std::cmp::Ordering::Greater => le = mid + 1,
                std::cmp::Ordering::Equal => ri -= 1,
            }
        }

        numbers[le]
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_case1() {
        assert_eq!(Solution::min_array(vec![2, 2, 2, 0, 1]), 0);
    }
}