Add solution and test-cases for problem 3079

Author: 0xff-dev

leetcode/3001-3100/3079.Find-the-Sum-of-Encrypted-Integers/README.md

@@ -1,28 +1,29 @@
 # [3079.Find the Sum of Encrypted Integers][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` containing **positive** integers. We define a function **encrypt** such that `encrypt(x)` replaces **every** digit in `x` with the **largest** digit in `x`. For example, `encrypt(523) = 555` and `encrypt(213) = 333`.
+
+Return the **sum** of encrypted elements.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
-```
+Input: nums = [1,2,3]
 
-## 题意
-> ...
+Output: 6
 
-## 题解
+Explanation: The encrypted elements are [1,2,3]. The sum of encrypted elements is 1 + 2 + 3 == 6.
+```
+
+**Example 2:**
 
-### 思路1
-> ...
-Find the Sum of Encrypted Integers
-```go
 ```
+Input: nums = [10,21,31]
+
+Output: 66
 
+Explanation: The encrypted elements are [11,22,33]. The sum of encrypted elements is 11 + 22 + 33 == 66.
+```
 
 ## 结语
 

leetcode/3001-3100/3079.Find-the-Sum-of-Encrypted-Integers/Solution.go

@@ -1,5 +1,24 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func to(n int) int {
+	x, bits, mod := 0, 0, 0
+	for n > 0 {
+		mod = n % 10
+		n /= 10
+		x = max(x, mod)
+		bits++
+	}
+	base := 0
+	for ; bits > 0; bits-- {
+		base = base*10 + x
+	}
+	return base
+}
+
+func Solution(nums []int) int {
+	var ret int
+	for _, n := range nums {
+		ret += to(n)
+	}
+	return ret
 }

leetcode/3001-3100/3079.Find-the-Sum-of-Encrypted-Integers/Solution_test.go

@@ -10,12 +10,11 @@ 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{1, 2, 3}, 6},
+		{"TestCase2", []int{10, 21, 31}, 66},
 	}
 
 	//	开始测试
@@ -30,10 +29,10 @@ 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() {
 }