Add solution and test-cases for problem 1828

Author: 0xff-dev

leetcode/1801-1900/1828.Queries-on-Number-of-Points-Inside-a-Circle/1.png

@@ -1,28 +1,35 @@
 # [1828.Queries on Number of Points Inside a Circle][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
+You are given an array `points` where `points[i] = [xi, yi]` is the coordinates of the `ith` point on a 2D plane. Multiple points can have the **same** coordinates.
+
+You are also given an array `queries` where `queries[j] = [xj, yj, rj]` describes a circle centered at `(xj, yj)` with a radius of `rj`.
+
+For each query `queries[j]`, compute the number of points **inside** the `jth` circle. Points **on the border** of the circle are considered **inside**.
+
+Return an array `answer`, where `answer[j]` is the answer to the `jth` query.
 
-**Example 1:**
+**Example 1:**  
+
+![1](./1.png)
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: points = [[1,3],[3,3],[5,3],[2,2]], queries = [[2,3,1],[4,3,1],[1,1,2]]
+Output: [3,2,2]
+Explanation: The points and circles are shown above.
+queries[0] is the green circle, queries[1] is the red circle, and queries[2] is the blue circle.
 ```
 
-## 题意
-> ...
+**EXample 2:**  
 
-## 题解
+![2](./2.png)
 
-### 思路1
-> ...
-Queries on Number of Points Inside a Circle
-```go
 ```
-
+Input: points = [[1,1],[2,2],[3,3],[4,4],[5,5]], queries = [[1,2,2],[2,2,2],[4,3,2],[4,3,3]]
+Output: [2,3,2,4]
+Explanation: The points and circles are shown above.
+queries[0] is green, queries[1] is red, queries[2] is blue, and queries[3] is purple.
+```
 
 ## 结语
 

leetcode/1801-1900/1828.Queries-on-Number-of-Points-Inside-a-Circle/2.png

@@ -1,5 +1,16 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(points [][]int, queries [][]int) []int {
+	ans := make([]int, len(queries))
+	for idx, q := range queries {
+		distance := q[2] * q[2]
+		for _, p := range points {
+			a := q[0] - p[0]
+			b := q[1] - p[1]
+			if a*a+b*b <= distance {
+				ans[idx]++
+			}
+		}
+	}
+	return ans
 }

leetcode/1801-1900/1828.Queries-on-Number-of-Points-Inside-a-Circle/README.md

@@ -9,31 +9,30 @@ import (
 func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
-		name   string
-		inputs bool
-		expect bool
+		name            string
+		points, queries [][]int
+		expect          []int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", [][]int{{1, 3}, {3, 3}, {5, 3}, {2, 2}}, [][]int{{2, 3, 1}, {4, 3, 1}, {1, 1, 2}}, []int{3, 2, 2}},
+		{"TestCase2", [][]int{{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}}, [][]int{{1, 2, 2}, {2, 2, 2}, {4, 3, 2}, {4, 3, 3}}, []int{2, 3, 2, 4}},
 	}
 
 	//	开始测试
 	for i, c := range cases {
 		t.Run(c.name+" "+strconv.Itoa(i), func(t *testing.T) {
-			got := Solution(c.inputs)
+			got := Solution(c.points, c.queries)
 			if !reflect.DeepEqual(got, c.expect) {
-				t.Fatalf("expected: %v, but got: %v, with inputs: %v",
-					c.expect, got, c.inputs)
+				t.Fatalf("expected: %v, but got: %v, with inputs: %v %v",
+					c.expect, got, c.points, c.queries)
 			}
 		})
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }