feat: add Rust solution for lc No.1200 (#4995)

Author: yanglbme

solution/1200-1299/1200.Minimum Absolute Difference/README.md

@@ -175,6 +175,31 @@ function minimumAbsDifference(arr: number[]): number[][] {
 }
 ```
 
+#### Rust
+
+```rust
+impl Solution {
+    pub fn minimum_abs_difference(mut arr: Vec<i32>) -> Vec<Vec<i32>> {
+        arr.sort();
+        let n = arr.len();
+
+        let mut mi = i32::MAX;
+        for i in 1..n {
+            mi = mi.min(arr[i] - arr[i - 1]);
+        }
+
+        let mut ans = Vec::new();
+        for i in 1..n {
+            if arr[i] - arr[i - 1] == mi {
+                ans.push(vec![arr[i - 1], arr[i]]);
+            }
+        }
+
+        ans
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->

solution/1200-1299/1200.Minimum Absolute Difference/README_EN.md

@@ -171,6 +171,31 @@ function minimumAbsDifference(arr: number[]): number[][] {
 }
 ```
 
+#### Rust
+
+```rust
+impl Solution {
+    pub fn minimum_abs_difference(mut arr: Vec<i32>) -> Vec<Vec<i32>> {
+        arr.sort();
+        let n = arr.len();
+
+        let mut mi = i32::MAX;
+        for i in 1..n {
+            mi = mi.min(arr[i] - arr[i - 1]);
+        }
+
+        let mut ans = Vec::new();
+        for i in 1..n {
+            if arr[i] - arr[i - 1] == mi {
+                ans.push(vec![arr[i - 1], arr[i]]);
+            }
+        }
+
+        ans
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->

solution/1200-1299/1200.Minimum Absolute Difference/Solution.rs

@@ -0,0 +1,20 @@
+impl Solution {
+    pub fn minimum_abs_difference(mut arr: Vec<i32>) -> Vec<Vec<i32>> {
+        arr.sort();
+        let n = arr.len();
+
+        let mut mi = i32::MAX;
+        for i in 1..n {
+            mi = mi.min(arr[i] - arr[i - 1]);
+        }
+
+        let mut ans = Vec::new();
+        for i in 1..n {
+            if arr[i] - arr[i - 1] == mi {
+                ans.push(vec![arr[i - 1], arr[i]]);
+            }
+        }
+
+        ans
+    }
+}