Add solution and test-cases for problem 3152

leetcode/3101-3200/3152.Special-Array-II/README.md

@@ -1,28 +1,37 @@
 # [3152.Special Array II][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
+An array is considered **special** if every pair of its adjacent elements contains two numbers with different parity.
+
+You are given an array of integer `nums` and a 2D integer matrix `queries`, where for `queries[i] = [fromi, toi]` your task is to check that 
+subarray `nums[fromi..toi]` is **special** or not.
+
+Return an array of booleans `answer` such that `answer[i]` is `true` if `nums[fromi..toi]` is special.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
-```
+Input: nums = [3,4,1,2,6], queries = [[0,4]]
+
+Output: [false]
 
-## 题意
-> ...
+Explanation:
 
-## 题解
+The subarray is [3,4,1,2,6]. 2 and 6 are both even.
+```
+
+**Example 2:**
 
-### 思路1
-> ...
-Special Array II
-```go
 ```
+Input: nums = [4,3,1,6], queries = [[0,2],[2,3]]
+
+Output: [false,true]
 
+Explanation:
+
+1. The subarray is [4,3,1]. 3 and 1 are both odd. So the answer to this query is false.
+2. The subarray is [1,6]. There is only one pair: (1,6) and it contains numbers with different parity. So the answer to this query is true.
+```
 
 ## 结语
 

leetcode/3101-3200/3152.Special-Array-II/Solution.go

@@ -1,5 +1,24 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(nums []int, queries [][]int) []bool {
+	lq := len(queries)
+	ans := make([]bool, lq)
+	l := len(nums)
+	dp := make([]int, l)
+	for i := 1; i < l; i++ {
+		cur := nums[i] & 1
+		pre := nums[i-1] & 1
+		if cur != pre {
+			dp[i] = dp[i-1] + 1
+		}
+	}
+	// 3, 4, 1, 2, 6
+	// 0, 1, 2, 3, 0
+	for i, q := range queries {
+		s, e := q[0], q[1]
+		if s == e || s >= e-dp[e] {
+			ans[i] = true
+		}
+	}
+	return ans
 }

leetcode/3101-3200/3152.Special-Array-II/Solution_test.go

@@ -9,31 +9,31 @@ import (
 func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
-		name   string
-		inputs bool
-		expect bool
+		name    string
+		nums    []int
+		queries [][]int
+		expect  []bool
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", []int{3, 4, 1, 2, 6}, [][]int{{0, 4}}, []bool{false}},
+		{"TestCase2", []int{4, 3, 1, 6}, [][]int{{0, 2}, {2, 3}}, []bool{false, true}},
 	}
 
 	//	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.nums, 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.nums, 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() {
 }