feat: add rust solution to lc problem: No.2311

No.2311.Longest Binary Subsequence Less Than or Equal to K

Author: yanglbme

solution/2300-2399/2311.Longest Binary Subsequence Less Than or Equal to K/README.md

@@ -206,6 +206,27 @@ public class Solution {
 }
 ```
 
+#### Rust
+
+```rust
+impl Solution {
+    pub fn longest_subsequence(s: String, k: i32) -> i32 {
+        let mut ans = 0;
+        let mut v = 0;
+        let s = s.as_bytes();
+        for i in (0..s.len()).rev() {
+            if s[i] == b'0' {
+                ans += 1;
+            } else if ans < 30 && (v | (1 << ans)) <= k {
+                v |= 1 << ans;
+                ans += 1;
+            }
+        }
+        ans
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->

solution/2300-2399/2311.Longest Binary Subsequence Less Than or Equal to K/README_EN.md

@@ -204,6 +204,27 @@ public class Solution {
 }
 ```
 
+#### Rust
+
+```rust
+impl Solution {
+    pub fn longest_subsequence(s: String, k: i32) -> i32 {
+        let mut ans = 0;
+        let mut v = 0;
+        let s = s.as_bytes();
+        for i in (0..s.len()).rev() {
+            if s[i] == b'0' {
+                ans += 1;
+            } else if ans < 30 && (v | (1 << ans)) <= k {
+                v |= 1 << ans;
+                ans += 1;
+            }
+        }
+        ans
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->

solution/2300-2399/2311.Longest Binary Subsequence Less Than or Equal to K/Solution.rs

@@ -0,0 +1,16 @@
+impl Solution {
+    pub fn longest_subsequence(s: String, k: i32) -> i32 {
+        let mut ans = 0;
+        let mut v = 0;
+        let s = s.as_bytes();
+        for i in (0..s.len()).rev() {
+            if s[i] == b'0' {
+                ans += 1;
+            } else if ans < 30 && (v | (1 << ans)) <= k {
+                v |= 1 << ans;
+                ans += 1;
+            }
+        }
+        ans
+    }
+}