init single_number_ii

Author: 0xmountaintop

README.md

@@ -46,9 +46,9 @@ cargo test
 |  #  | Title           |  Solution       |  Time           | Space           | Difficulty    | Tag          | Note| 
 |-----|---------------- | --------------- | --------------- | --------------- | ------------- |--------------|-----|
 0136 | [Single Number](https://leetcode.com/problems/single-number/) | [C++](https://github.com/kamyu104/LeetCode-Solutions/blob/master/C++/single-number.cpp) <br> [Python](https://github.com/kamyu104/LeetCode-Solutions/blob/master/Python/single-number.py) <br> [Rust](./kamyu104/src/single_number.rs) | _O(n)_       | _O(1)_          | Easy         |||
+0137 | [Single Number II](https://leetcode.com/problems/single-number-ii/) | [C++](./C++/single-number-ii.cpp) <br> [Python](./Python/single-number-ii.py) | _O(n)_ | _O(1)_          | Medium         |||
 
@@ -1,2 +1,3 @@
@@ -1,2 +1,3 @@
 mod template;
 mod single_number;
+mod single_number_ii;
@@ -0,0 +1,21 @@
+pub struct Solution {}
+
+impl Solution {
+    pub fn add(a: i32, b: i32) -> i32 {
+        // only print when a test fails
+        println!("{}", a + b);
+        return a + b;
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    // Note this useful idiom: importing names from outer (for mod tests) scope.
+    use super::*;
+
+    #[test]
+    fn test_add() {
+        assert_eq!(Solution::add(1, 2), 3);
+        assert_ne!(Solution::add(1, 2), 4);
+    }
+}

kamyu104/src/single_number_ii.rs

@@ -1,2 +1,3 @@
 mod template;
 mod single_number;
+mod single_number_ii;

@@ -0,0 +1,21 @@
+pub struct Solution {}
+
+impl Solution {
+    pub fn add(a: i32, b: i32) -> i32 {
+        // only print when a test fails
+        println!("{}", a + b);
+        return a + b;
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    // Note this useful idiom: importing names from outer (for mod tests) scope.
+    use super::*;
+
+    #[test]
+    fn test_add() {
+        assert_eq!(Solution::add(1, 2), 3);
+        assert_ne!(Solution::add(1, 2), 4);
+    }
+}