leetcode

commit 5933f45e05ef14b0af8a78f1aaeaba25dd585537
Author: ling0x <ling0x@users.noreply.github.com>
Date:   Sat, 11 Apr 2026 02:44:48 +0100

initial commit

Diffstat:
A
.gitignore
 | 
1
+
A
Cargo.lock
 | 
7
+++++++
A
Cargo.toml
 | 
6
++++++
A
src/hash_table/mod.rs
 | 
1
+
A
src/hash_table/two_sum.rs
 | 
39
+++++++++++++++++++++++++++++++++++++++
A
src/lib.rs
 | 
1
+
A
src/main.rs
 | 
3
+++

7 files changed, 58 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "leetcode"
+version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "leetcode"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
diff --git a/src/hash_table/mod.rs b/src/hash_table/mod.rs
@@ -0,0 +1 @@
+pub mod two_sum;
diff --git a/src/hash_table/two_sum.rs b/src/hash_table/two_sum.rs
@@ -0,0 +1,39 @@
+use std::collections::HashSet;
+
+// First try
+pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
+    let mut result = HashSet::<i32>::new();
+
+    nums.iter().enumerate().for_each(|(idx, x)| {
+        let pair = nums
+            .iter()
+            .enumerate()
+            .find(|(idx2, y)| *y + x == target && &idx != idx2);
+        if let Some((idx2, y)) = pair {
+            result.insert(idx as i32);
+            result.insert(idx2 as i32);
+            println!("result: {} + {:?} = {}", x, y, target);
+        }
+    });
+
+    println!("{:#?}", result);
+    result.into_iter().collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::hash_table::two_sum::two_sum;
+
+    #[test]
+    fn two_sum_test_1() {
+        two_sum(vec![2, 7, 11, 15], 9);
+    }
+    #[test]
+    fn two_sum_test_2() {
+        two_sum(vec![3, 2, 3], 6);
+    }
+    #[test]
+    fn two_sum_test_3() {
+        two_sum(vec![3, 2, 4], 6);
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
@@ -0,0 +1 @@
+pub mod hash_table;
diff --git a/src/main.rs b/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Cargo test all the leetcode cases");
+}