diff options
Diffstat (limited to 'works')
| -rw-r--r-- | works/solutions/src/find_median_sorted_arrays.rs | 102 | ||||
| -rw-r--r-- | works/solutions/src/lib.rs | 1 | 
2 files changed, 103 insertions, 0 deletions
| diff --git a/works/solutions/src/find_median_sorted_arrays.rs b/works/solutions/src/find_median_sorted_arrays.rs new file mode 100644 index 0000000..2c09afb --- /dev/null +++ b/works/solutions/src/find_median_sorted_arrays.rs @@ -0,0 +1,102 @@ +use super::Solution;
 +
 +impl Solution {
 +    pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
 +        let (len_a, len_b) = (nums1.len(), nums2.len());
 +        let (a, len_a, b, len_b) = if len_a <= len_b {
 +            (nums1, len_a, nums2, len_b)
 +        } else {
 +            (nums2, len_b, nums1, len_a)
 +        };
 +        let index_sum = (a.len() + b.len() + 1) / 2;
 +        let (mut i_min, mut i_max) = (0, len_a);
 +
 +        while i_min != i_max {
 +            let i = (i_min + i_max) / 2;
 +            let j = index_sum - i;
 +            if j != 0 && a[i] < b[j - 1] {
 +                i_min = i + 1;
 +            } else {
 +                i_max = i;
 +            }
 +        }
 +
 +        let i = i_min;
 +        let j = index_sum - i;
 +
 +        let mut v = vec![];
 +        if i != 0 {
 +            v.push(a[i - 1]);
 +        }
 +        if j != 0 {
 +            v.push(b[j - 1]);
 +        }
 +        if i != len_a {
 +            v.push(a[i]);
 +        }
 +        if j != len_b {
 +            v.push(b[j]);
 +        }
 +        v.sort_unstable();
 +        println!("{:?}", v);
 +
 +        if (len_a + len_b) % 2 == 0 {
 +            match v.len() {
 +                2 => (v[0] as f64 + v[1] as f64) / 2.0,
 +                3 => {
 +                    if i == 0 {
 +                        (v[0] as f64 + v[1] as f64) / 2.0
 +                    } else {
 +                        (v[1] as f64 + v[2] as f64) / 2.0
 +                    }
 +                }
 +                4 => (v[1] as f64 + v[2] as f64) / 2.0,
 +                _ => panic!(),
 +            }
 +        } else {
 +            match v.len() {
 +                1 | 2 => v[0] as f64,
 +                3 => {
 +                    if i == 0 {
 +                        v[0] as f64
 +                    } else {
 +                        v[1] as f64
 +                    }
 +                }
 +                4 => v[1] as f64,
 +                _ => panic!(),
 +            }
 +        }
 +    }
 +}
 +
 +#[cfg(test)]
 +mod tests {
 +    use super::Solution;
 +
 +    #[test]
 +    fn test() {
 +        assert_eq!(Solution::find_median_sorted_arrays(vec![3], vec![]), 3.0);
 +        assert_eq!(Solution::find_median_sorted_arrays(vec![3], vec![4]), 3.5);
 +        assert_eq!(
 +            Solution::find_median_sorted_arrays(vec![3, 4, 5], vec![1, 2, 6]),
 +            3.5
 +        );
 +        assert_eq!(
 +            Solution::find_median_sorted_arrays(vec![3, 4], vec![1, 2, 6]),
 +            3.0
 +        );
 +        assert_eq!(
 +            Solution::find_median_sorted_arrays(vec![1], vec![2, 3, 4]),
 +            2.5
 +        );
 +        assert_eq!(
 +            Solution::find_median_sorted_arrays(vec![4], vec![1, 2, 3, 5]),
 +            3.0
 +        );
 +        assert_eq!(
 +            Solution::find_median_sorted_arrays(vec![1, 2, 3], vec![4, 5, 6]),
 +            3.5
 +        );
 +    }
 +}
 diff --git a/works/solutions/src/lib.rs b/works/solutions/src/lib.rs index 2bbe624..1d369e8 100644 --- a/works/solutions/src/lib.rs +++ b/works/solutions/src/lib.rs @@ -1,5 +1,6 @@  pub mod two_sum;  pub mod add_two_numbers;  pub mod length_of_longest_substring; +pub mod find_median_sorted_arrays;  pub struct Solution; | 
