Add solution and test-cases for problem 3147

Author: 0xff-dev

leetcode/3101-3200/3147.Taking-Maximum-Energy-From-the-Mystic-Dungeon/README.md

@@ -1,28 +1,35 @@
 # [3147.Taking Maximum Energy From the Mystic Dungeon][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
+In a mystic dungeon, `n` magicians are standing in a line. Each magician has an attribute that gives you energy. Some magicians can give you negative energy, which means taking energy from you.
+
+You have been cursed in such a way that after absorbing energy from magician `i`, you will be instantly transported to magician `(i + k)`. This process will be repeated until you reach the magician where `(i + k)` does not exist.
+
+In other words, you will choose a starting point and then teleport with k jumps until you reach the end of the magicians' sequence, **absorbing all the energy** during the journey.
+
+You are given an array `energy` and an integer `k`. Return the **maximum** possible energy you can gain.
+
+**Note** that when you are reach a magician, you must take energy from them, whether it is negative or positive energy.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
-```
+Input: energy = [5,2,-10,-5,1], k = 3
+
+Output: 3
 
-## 题意
-> ...
+Explanation: We can gain a total energy of 3 by starting from magician 1 absorbing 2 + 1 = 3.
+```
 
-## 题解
+**Example 2:**
 
-### 思路1
-> ...
-Taking Maximum Energy From the Mystic Dungeon
-```go
 ```
+Input: energy = [-2,-3,-1], k = 2
 
+Output: -1
+
+Explanation: We can gain a total energy of -1 by starting from magician 2.
+```
 
 ## 结语
 

leetcode/3101-3200/3147.Taking-Maximum-Energy-From-the-Mystic-Dungeon/Solution.go

@@ -1,5 +1,19 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(energy []int, k int) int {
+	dp := make([]int, len(energy))
+	// k = 2
+	// 1, 2, 3, 4,
+	l := len(energy)
+	ret := energy[l-1]
+	for i := l - 1; i >= l-k; i-- {
+		// 这些是无法跳的，所以默认就有自己的值
+		dp[i] = energy[i]
+		ret = max(ret, dp[i])
+	}
+	for i := l - k - 1; i >= 0; i-- {
+		dp[i] = dp[i+k] + energy[i]
+		ret = max(ret, dp[i])
+	}
+	return ret
 }

leetcode/3101-3200/3147.Taking-Maximum-Energy-From-the-Mystic-Dungeon/Solution_test.go

@@ -10,30 +10,30 @@ func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
 		name   string
-		inputs bool
-		expect bool
+		inputs []int
+		k      int
+		expect int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", []int{5, 2, -10, -5, 1}, 3, 3},
+		{"TestCase2", []int{-2, -3, -1}, 2, -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.inputs, c.k)
 			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.inputs, c.k)
 			}
 		})
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }