Merge pull request #1664 from Jack-Zhang-1314/patch-3

Update 链表理论基础 about rust

problems/链表理论基础.md

@@ -218,6 +218,22 @@ class ListNode(_x: Int = 0, _next: ListNode = null) {
 }
 ```
 
+Rust:
+```rust
+#[derive(PartialEq, Eq, Clone, Debug)]
+pub struct ListNode<T> {
+    pub val: T,
+    pub next: Option<Box<ListNode<T>>>,
+}
+
+impl<T> ListNode<T> {
+    #[inline]
+    fn new(val: T, node: Option<Box<ListNode<T>>>) -> Self {
+        ListNode { next: node, val }
+    }
+}
+```
+
 
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