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authorJack Sangdahl <[email protected]>2025-03-10 00:36:13 -0600
committerJack Sangdahl <[email protected]>2025-03-10 00:36:13 -0600
commit7c60dee83b436e8e8a667bf9f191beced8de4fc3 (patch)
treeeb7a24ee2067f92245c57bb118e85a1baf15df50 /other/erect_fence.rs
parent5d7cdc215e4ba1ec4cbb24c084cccb5e5e641468 (diff)
downloadleetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.tar.gz
leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.zip
chore: move cpp and rust code to directory
Diffstat (limited to 'other/erect_fence.rs')
-rw-r--r--other/erect_fence.rs27
1 files changed, 27 insertions, 0 deletions
diff --git a/other/erect_fence.rs b/other/erect_fence.rs
new file mode 100644
index 0000000..6dee425
--- /dev/null
+++ b/other/erect_fence.rs
@@ -0,0 +1,27 @@
+use std::collections::VecDeque;
+type Tree = Vec<i32>;
+struct Solution;
+
+impl Solution {
+ pub fn outer_trees(mut trees: Vec<Tree>) -> Vec<Tree> {
+ fn cross(a: &Tree, b: &Tree, c: &Tree) -> i32 {
+ return (c[1] - a[1]) * (a[0] - b[0]) - (a[1] - b[1]) * (c[0] - a[0])
+ }
+ trees.sort();
+ let mut dv: VecDeque<Tree> = VecDeque::new();
+ for t in trees {
+ while dv.len() >= 2 && cross(&dv[dv.len() - 1], &dv[dv.len() - 2], &t) < 0 {
+ dv.pop_back();
+ }
+ dv.push_back(t.clone());
+ while dv.len() >= 2 && cross(&dv[0], &dv[1], &t) > 0 {
+ dv.pop_front();
+ }
+ dv.push_front(t.clone());
+ }
+ let mut fence = Vec::from(dv);
+ fence.sort_unstable();
+ fence.dedup();
+ fence
+ }
+}