feat: add rust solution to lc problem: No.2009 (#1789)

Author: xzhseh

solution/2000-2099/2009.Minimum Number of Operations to Make Array Continuous/README.md

@@ -208,6 +208,35 @@ public:
 };
 ```
 
+### **Rust**
+
+```rust
+use std::collections::BTreeSet;
+
+impl Solution {
+    #[allow(dead_code)]
+    pub fn min_operations(nums: Vec<i32>) -> i32 {
+        let n = nums.len();
+        let nums = nums.into_iter().collect::<BTreeSet<i32>>();
+
+        let m = nums.len();
+        let nums = nums.into_iter().collect::<Vec<i32>>();
+
+        let mut ans = n;
+
+        for i in 0..m {
+            let j = match nums.binary_search(&(nums[i] + n as i32)) {
+                Ok(idx) => idx,
+                Err(idx) => idx,
+            };
+            ans = std::cmp::min(ans, n - (j - i))
+        }
+
+        ans as i32
+    }
+}
+```
+
 ### **Go**
 
 ```go

solution/2000-2099/2009.Minimum Number of Operations to Make Array Continuous/README_EN.md

@@ -181,6 +181,35 @@ public:
 };
 ```
 
+### **Rust**
+
+```rust
+use std::collections::BTreeSet;
+
+impl Solution {
+    #[allow(dead_code)]
+    pub fn min_operations(nums: Vec<i32>) -> i32 {
+        let n = nums.len();
+        let nums = nums.into_iter().collect::<BTreeSet<i32>>();
+
+        let m = nums.len();
+        let nums = nums.into_iter().collect::<Vec<i32>>();
+
+        let mut ans = n;
+
+        for i in 0..m {
+            let j = match nums.binary_search(&(nums[i] + n as i32)) {
+                Ok(idx) => idx,
+                Err(idx) => idx,
+            };
+            ans = std::cmp::min(ans, n - (j - i))
+        }
+
+        ans as i32
+    }
+}
+```
+
 ### **Go**
 
 ```go

solution/2000-2099/2009.Minimum Number of Operations to Make Array Continuous/Solution.rs

@@ -0,0 +1,24 @@
+use std::collections::BTreeSet;
+
+impl Solution {
+    #[allow(dead_code)]
+    pub fn min_operations(nums: Vec<i32>) -> i32 {
+        let n = nums.len();
+        let nums = nums.into_iter().collect::<BTreeSet<i32>>();
+
+        let m = nums.len();
+        let nums = nums.into_iter().collect::<Vec<i32>>();
+
+        let mut ans = n;
+
+        for i in 0..m {
+            let j = match nums.binary_search(&(nums[i] + n as i32)) {
+                Ok(idx) => idx,
+                Err(idx) => idx,
+            };
+            ans = std::cmp::min(ans, n - (j - i))
+        }
+
+        ans as i32
+    }
+}