first commit

src/main.rs

@@ -3,7 +3,21 @@
  * Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
  *-------------------------------------------------------------------------------------------------------------*/
 
+fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
+    use std::collections::HashMap;
+    let mut map = HashMap::new();
+    for (i, &num) in nums.iter().enumerate() {
+        if let Some(&j) = map.get(&(target - num)) {
+            return vec![j as i32, i as i32];
+        }
+        map.insert(num, i);
+    }
+    vec![]
+}
+
 fn main() {
-    let name = "VS Code Remote - Containers";
-    println!("Hello, {}!", name);
+    let nums = vec![2, 7, 11, 15];
+    let target = 9;
+    let result = two_sum(nums, target);
+    println!("{:?}", result); // 输出: [0, 1]
 }