Add solution and test-cases for problem 1288

Author: 0xff-dev

leetcode/1201-1300/1288.Remove-Covered-Intervals/README.md

@@ -1,28 +1,26 @@
 # [1288.Remove Covered Intervals][title]
 
-> [!WARNING|style:flat]
-> This question is temporarily unanswered if you have good ideas. Welcome to [Create Pull Request PR](https://github.com/kylesliu/awesome-golang-algorithm)
-
 ## Description
+Given an array `intervals` where `intervals[i] = [li, ri]` represent the interval `[li, ri)`, remove all intervals that are covered by another interval in the list.
+
+The interval `[a, b)` is covered by the interval `[c, d)` if and only if `c <= a` and `b <= d`.
+
+Return the number of remaining intervals.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: intervals = [[1,4],[3,6],[2,8]]
+Output: 2
+Explanation: Interval [3,6] is covered by [2,8], therefore it is removed.
 ```
 
-## 题意
-> ...
+**Example 2:**
 
-## 题解
-
-### 思路1
-> ...
-Remove Covered Intervals
-```go
 ```
-
+Input: intervals = [[1,4],[2,3]]
+Output: 1
+```
 
 ## 结语
 

leetcode/1201-1300/1288.Remove-Covered-Intervals/Solution.go

@@ -1,5 +1,26 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+import "sort"
+
+func Solution(intervals [][]int) int {
+	l := len(intervals)
+	sort.Slice(intervals, func(i, j int) bool {
+		if intervals[i][0] == intervals[j][0] {
+			return intervals[i][1] > intervals[j][1]
+		}
+		return intervals[i][0] < intervals[j][0]
+	})
+	ans := 1
+	maxEnd := intervals[0][1]
+	for i := 1; i < l; i++ {
+		if intervals[i][0] == intervals[i-1][0] {
+			continue
+		}
+		if intervals[i][1] <= maxEnd {
+			continue
+		}
+		maxEnd = intervals[i][1]
+		ans++
+	}
+	return ans
 }

leetcode/1201-1300/1288.Remove-Covered-Intervals/Solution_test.go

@@ -10,12 +10,13 @@ func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
 		name   string
-		inputs bool
-		expect bool
+		inputs [][]int
+		expect int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", [][]int{
+			{1, 4}, {3, 6}, {2, 8},
+		}, 2},
+		{"TestCase2", [][]int{{1, 4}, {2, 3}}, 1},
 	}
 
 	//	开始测试
@@ -30,10 +31,10 @@ func TestSolution(t *testing.T) {
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }