Add solution and test-cases for problem 3362

Author: 0xff-dev

leetcode/3301-3400/3362.Zero-Array-Transformation-III/README.md

@@ -1,28 +1,55 @@
 # [3362.Zero Array Transformation III][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 integer array `nums` of length `n` and a 2D array `queries` where `queries[i] = [li, ri]`.
+
+Each `queries[i]` represents the following action on `nums`:
+
+- Decrement the value at each index in the range `[li, ri]` in nums by **at most** `1`.
+- The amount by which the value is decremented can be chosen **independently** for each index.
+
+A **Zero Array** is an array with all its elements equal to 0.
+
+Return the **maximum** number of elements that can be removed from `queries`, such that `nums` can still be converted to a **zero array** using the remaining queries. If it is not possible to convert `nums` to a **zero array**, return -1.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: nums = [2,0,2], queries = [[0,2],[0,2],[1,1]]
+
+Output: 1
+
+Explanation:
+
+After removing queries[2], nums can still be converted to a zero array.
+
+Using queries[0], decrement nums[0] and nums[2] by 1 and nums[1] by 0.
+Using queries[1], decrement nums[0] and nums[2] by 1 and nums[1] by 0.
+```
+
+**Example 2:**
+
 ```
+Input: nums = [1,1,1,1], queries = [[1,3],[0,2],[1,3],[1,2]]
 
-## 题意
-> ...
+Output: 2
 
-## 题解
+Explanation:
 
-### 思路1
-> ...
-Zero Array Transformation III
-```go
+We can remove queries[2] and queries[3].
 ```
 
+**Example 3:**
+
+```
+Input: nums = [1,2,3,4], queries = [[0,3]]
+
+Output: -1
+
+Explanation:
+
+nums cannot be converted to a zero array even after using all the queries.
+```
 
 ## 结语
 

leetcode/3301-3400/3362.Zero-Array-Transformation-III/Solution.go

@@ -1,5 +1,58 @@
 package Solution
 
-func Solution(x bool) bool {
+import (
+	"container/heap"
+	"sort"
+)
+
+func Solution(nums []int, queries [][]int) int {
+	sort.Slice(queries, func(i, j int) bool {
+		return queries[i][0] < queries[j][0]
+	})
+	pq := &Heap{}
+	heap.Init(pq)
+	deltaArray := make([]int, len(nums)+1)
+	operations := 0
+
+	for i, j := 0, 0; i < len(nums); i++ {
+		operations += deltaArray[i]
+		for j < len(queries) && queries[j][0] == i {
+			heap.Push(pq, queries[j][1])
+			j++
+		}
+		for operations < nums[i] && pq.Len() > 0 && (*pq)[0] >= i {
+			operations += 1
+			deltaArray[heap.Pop(pq).(int)+1] -= 1
+		}
+		if operations < nums[i] {
+			return -1
+		}
+	}
+	return pq.Len()
+}
+
+type Heap []int
+
+func (h Heap) Len() int {
+	return len(h)
+}
+
+func (h Heap) Less(i, j int) bool {
+	return h[i] > h[j]
+}
+
+func (h Heap) Swap(i, j int) {
+	h[i], h[j] = h[j], h[i]
+}
+
+func (h *Heap) Push(x interface{}) {
+	*h = append(*h, x.(int))
+}
+
+func (h *Heap) Pop() interface{} {
+	old := *h
+	n := len(old)
+	x := old[n-1]
+	*h = old[0 : n-1]
 	return x
 }

leetcode/3301-3400/3362.Zero-Array-Transformation-III/Solution_test.go

@@ -9,31 +9,32 @@ 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  int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", []int{2, 0, 2}, [][]int{{0, 2}, {0, 2}, {1, 1}}, 1},
+		{"TestCase2", []int{1, 1, 1, 1}, [][]int{{1, 3}, {0, 2}, {1, 3}, {1, 2}}, 2},
+		{"TestCase3", []int{1, 2, 3, 4}, [][]int{{0, 3}}, -1},
 	}
 
 	//	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() {
 }