Merge pull request #1565 from cezarbbb/Greedy09

添加 0056.合并区间 Rust版本

problems/0056.合并区间.md

@@ -329,5 +329,31 @@ object Solution {
 }
 ```
 
+### Rust
+
+```Rust
+impl Solution {
+    fn max(a: i32, b: i32) -> i32 {
+        if a > b { a } else { b }
+    }
+
+    pub fn merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
+        let mut intervals = intervals;
+        let mut result = Vec::new();
+        if intervals.len() == 0 { return result; }
+        intervals.sort_by(|a, b| a[0].cmp(&b[0]));
+        result.push(intervals[0].clone());
+        for i in 1..intervals.len() {
+            if result.last_mut().unwrap()[1] >= intervals[i][0] {
+                result.last_mut().unwrap()[1] = Self::max(result.last_mut().unwrap()[1], intervals[i][1]);
+            } else {
+                result.push(intervals[i].clone());
+            }
+        }
+        result
+    }
+}
+```
+
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