Merge pull request #1892 from DaleSeo/main

[DaleSeo] WEEK 07 solutions

Author: DaleSeo

reverse-linked-list/DaleSeo.rs

@@ -0,0 +1,16 @@
+// TC: O(n)
+// SC: O(1)
+impl Solution {
+    pub fn reverse_list(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
+        let mut curr = head;
+        let mut prev = None;
+
+        while let Some(mut node) = curr {
+            curr = node.next.take();
+            node.next = prev;
+            prev = Some(node);
+        }
+
+        prev
+    }
+}