aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--works/solutions/src/find_median_sorted_arrays.rs102
-rw-r--r--works/solutions/src/lib.rs1
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;