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notes/src/day36/lc56.md

@@ -26,3 +26,27 @@ public:
 
 这个 很直接
 
+
+```rust
+struct Solution {}
+impl Solution {
+    pub fn merge(mut intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
+        let mut res: Vec<Vec<i32>> = Vec::new();
+        intervals.sort_by_key(|v| v[0]);
+        let mut left: i32 = intervals[0][0];
+        let mut right: i32 = intervals[0][1];
+        intervals.iter().skip(1usize).for_each(|v| {
+            if v[0] <= right {
+                right = std::cmp::max(v[1], right);
+            } else {
+                // non overlap
+                res.push(vec![left, right]);
+                left = v[0];
+                right = v[1];
+            }
+        });
+        res.push(vec![left, right]);
+        res
+    }
+}
+```