Merge pull request #1147 from 0xff-dev/2529

Add solution and test-cases for problem 2529

Author: 6boris

leetcode/2501-2600/2529.Maximum-Count-of-Positive-Integer-and-Negative-Integer/README.md

@@ -0,0 +1,39 @@
+# [2529.Maximum Count of Positive Integer and Negative Integer][title]
+
+## Description
+Given an array `nums` sorted in **non-decreasing** order, return the maximum between the number of positive integers and the number of negative integers.
+
+- In other words, if the number of positive integers in `nums` is `pos` and the number of negative integers is `neg`, then return the maximum of `pos` and `neg`.
+
+**Note** that `0` is neither positive nor negative.
+
+**Example 1:**
+
+```
+Input: nums = [-2,-1,-1,1,2,3]
+Output: 3
+Explanation: There are 3 positive integers and 3 negative integers. The maximum count among them is 3.
+```
+
+**Example 2:**
+
+```
+Input: nums = [-3,-2,-1,0,0,1,2]
+Output: 3
+Explanation: There are 2 positive integers and 3 negative integers. The maximum count among them is 3.
+```
+
+**Example 3:**
+
+```
+Input: nums = [5,20,66,1314]
+Output: 4
+Explanation: There are 4 positive integers and 0 negative integers. The maximum count among them is 4.
+```
+
+## 结语
+
+如果你同我一样热爱数据结构、算法、LeetCode，可以关注我 GitHub 上的 LeetCode 题解：[awesome-golang-algorithm][me]
+
+[title]: https://leetcode.com/problems/maximum-count-of-positive-integer-and-negative-integer
+[me]: https://github.com/kylesliu/awesome-golang-algorithm

leetcode/2501-2600/2529.Maximum-Count-of-Positive-Integer-and-Negative-Integer/Solution.go

@@ -1,5 +1,16 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+import "sort"
+
+func Solution(nums []int) int {
+	l := len(nums)
+	posIndex := sort.Search(l, func(i int) bool {
+		return nums[i] > 0
+	})
+	pos := l - posIndex
+
+	negIndex := sort.Search(l, func(i int) bool {
+		return nums[i] >= 0
+	})
+	return max(pos, negIndex)
 }

leetcode/2501-2600/2529.Maximum-Count-of-Positive-Integer-and-Negative-Integer/Solution_test.go

@@ -10,12 +10,12 @@ 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{-2, -1, -1, 1, 2, 3}, 3},
+		{"TestCase2", []int{-3, -2, -1, 0, 0, 1, 2}, 3},
+		{"TestCase3", []int{5, 20, 66, 1314}, 4},
 	}
 
 	//	开始测试
@@ -30,10 +30,10 @@ 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() {
 }