feat: add rust solution to lc problem: No.2586 (#1177)

Signed-off-by: xiaolatiao <1628652790@qq.com>

Author: dierbei

solution/2500-2599/2586.Count the Number of Vowel Strings in Range/README.md

@@ -150,6 +150,30 @@ function vowelStrings(words: string[], left: number, right: number): number {
 }
 ```
 
+### **Rust**
+
+```rust
+impl Solution {
+    pub fn vowel_strings(words: Vec<String>, left: i32, right: i32) -> i32 {
+        let check = |c: u8| -> bool { 
+            c == b'a' || c == b'e' || c == b'i' || c == b'o' || c == b'u'
+        };
+
+        let mut ans = 0;
+        for i in left..=right {
+            let words_bytes = words[i as usize].as_bytes();
+            let first_char = words_bytes[0];
+            let last_char = words_bytes[words_bytes.len() - 1];
+            if check(first_char) && check(last_char) {
+                ans += 1;
+            }
+        }
+
+        ans
+    }
+}
+```
+
 ### **...**
 
 ```

solution/2500-2599/2586.Count the Number of Vowel Strings in Range/README_EN.md

@@ -140,6 +140,30 @@ function vowelStrings(words: string[], left: number, right: number): number {
 }
 ```
 
+### **Rust**
+
+```rust
+impl Solution {
+    pub fn vowel_strings(words: Vec<String>, left: i32, right: i32) -> i32 {
+        let check = |c: u8| -> bool { 
+            c == b'a' || c == b'e' || c == b'i' || c == b'o' || c == b'u'
+        };
+
+        let mut ans = 0;
+        for i in left..=right {
+            let words_bytes = words[i as usize].as_bytes();
+            let first_char = words_bytes[0];
+            let last_char = words_bytes[words_bytes.len() - 1];
+            if check(first_char) && check(last_char) {
+                ans += 1;
+            }
+        }
+
+        ans
+    }
+}
+```
+
 ### **...**
 
 ```

solution/2500-2599/2586.Count the Number of Vowel Strings in Range/Solution.rs

@@ -0,0 +1,19 @@
+impl Solution {
+    pub fn vowel_strings(words: Vec<String>, left: i32, right: i32) -> i32 {
+        let check = |c: u8| -> bool {
+            c == b'a' || c == b'e' || c == b'i' || c == b'o' || c == b'u'
+        };
+
+        let mut ans = 0;
+        for i in left..=right {
+            let words_bytes = words[i as usize].as_bytes();
+            let first_char = words_bytes[0];
+            let last_char = words_bytes[words_bytes.len() - 1];
+            if check(first_char) && check(last_char) {
+                ans += 1;
+            }
+        }
+
+        ans
+    }
+}