From 726f5b0b645cfa2a4f3c924e8098c6a8478758b3 Mon Sep 17 00:00:00 2001
From: Greg Burri <greg.burri@gmail.com>
Date: Wed, 23 Oct 2024 12:16:14 +0200
Subject: [PATCH] Exercise 07-04
---
exercises/07_threads/04_scoped_threads/src/lib.rs | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/exercises/07_threads/04_scoped_threads/src/lib.rs b/exercises/07_threads/04_scoped_threads/src/lib.rs
index d81a3a9..57c2cfe 100644
--- a/exercises/07_threads/04_scoped_threads/src/lib.rs
+++ b/exercises/07_threads/04_scoped_threads/src/lib.rs
@@ -2,8 +2,16 @@
// and compute the sum of each half in a separate thread.
// Don't perform any heap allocation. Don't leak any memory.
+use std::thread;
+
pub fn sum(v: Vec<i32>) -> i32 {
- todo!()
+ let (s1, s2) = v.split_at(v.len() / 2 as usize);
+
+ thread::scope(|scope| {
+ let h1 = scope.spawn(|| s1.iter().sum::<i32>());
+ let h2 = scope.spawn(|| s2.iter().sum::<i32>());
+ h1.join().unwrap() + h2.join().unwrap()
+ })
}
#[cfg(test)]
--
2.49.0