Update 0516.最长回文子序列.md about rust

problems/0516.最长回文子序列.md

@@ -274,7 +274,26 @@ function longestPalindromeSubseq(s: string): number {
 };
 ```
 
+Rust:
 
+```rust
+impl Solution {
+    pub fn longest_palindrome_subseq(s: String) -> i32 {
+        let mut dp = vec![vec![0; s.len()]; s.len()];
+        for i in (0..s.len()).rev() {
+            dp[i][i] = 1;
+            for j in i + 1..s.len() {
+                if s[i..=i] == s[j..=j] {
+                    dp[i][j] = dp[i + 1][j - 1] + 2;
+                    continue;
+                }
+                dp[i][j] = dp[i + 1][j].max(dp[i][j - 1]);
+            }
+        }
+        dp[0][s.len() - 1]
+    }
+}
+```
 
 
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