Update 0718.最长重复子数组.md about rust

problems/0718.最长重复子数组.md

@@ -537,6 +537,29 @@ function findLength(nums1: number[], nums2: number[]): number {
 };
 ```
 
+Rust:
+
+> 滚动数组
+
+```rust
+impl Solution {
+    pub fn find_length(nums1: Vec<i32>, nums2: Vec<i32>) -> i32 {
+        let (mut res, mut dp) = (0, vec![0; nums2.len()]);
+
+        for n1 in nums1 {
+            for j in (0..nums2.len()).rev() {
+                if n1 == nums2[j] {
+                    dp[j] = if j == 0 { 1 } else { dp[j - 1] + 1 };
+                    res = res.max(dp[j]);
+                } else {
+                    dp[j] = 0;
+                }
+            }
+        }
+        res
+    }
+}
+```