From 4b0a6a01b051a4ebfbc17661d14cb23fe4f275fb Mon Sep 17 00:00:00 2001
From: Orangerot <purple@orangerot.dev>
Date: Thu, 27 Jun 2024 11:30:16 +0200
Subject: Initial commit

---
 add-two-numbers/Cargo.toml  |  8 ++++++++
 add-two-numbers/src/main.rs | 46 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 add-two-numbers/Cargo.toml
 create mode 100644 add-two-numbers/src/main.rs

(limited to 'add-two-numbers')

diff --git a/add-two-numbers/Cargo.toml b/add-two-numbers/Cargo.toml
new file mode 100644
index 0000000..eee98ac
--- /dev/null
+++ b/add-two-numbers/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "add-two-numbers"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/add-two-numbers/src/main.rs b/add-two-numbers/src/main.rs
new file mode 100644
index 0000000..3a9abe9
--- /dev/null
+++ b/add-two-numbers/src/main.rs
@@ -0,0 +1,46 @@
+fn main() {
+    println!("Hello, world!");
+}
+
+#[derive(PartialEq, Eq, Clone, Debug)]
+pub struct ListNode {
+  pub val: i32,
+  pub next: Option<Box<ListNode>>
+}
+
+impl ListNode {
+  #[inline]
+  fn new(val: i32) -> Self {
+    ListNode {
+      next: None,
+      val
+    }
+  }
+}
+// Comprehensive 3ms Recursive 
+
+struct Solution {}
+impl Default for ListNode {
+    fn default() -> Self {
+        ListNode::new(0)
+    }
+}
+
+impl Solution {
+    pub fn add_two_numbers(l1: Option<Box<ListNode>>, l2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
+        Solution::add_two_numbers_with_carry(l1, l2, 0)
+    }
+    pub fn add_two_numbers_with_carry(l1: Option<Box<ListNode>>, l2: Option<Box<ListNode>>, carry: i32) -> Option<Box<ListNode>> {
+        if l1.is_none() && l2.is_none() && carry == 0 {return None;}
+        let a = l1.unwrap_or_default();
+        let b = l2.unwrap_or_default();        
+        let sum = a.val + b.val + carry;
+
+        let result = ListNode {
+            val: sum % 10,
+            next: Solution::add_two_numbers_with_carry(a.next, b.next, sum / 10)
+        };
+        Some(Box::new(result))
+    }
+}
+
-- 
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