Merge pull request #1107 from 0xff-dev/728

Add solution and test-cases for problem 728

Author: 6boris

leetcode/701-800/0728.Self-Dividing-Numbers/README.md

@@ -1,28 +1,27 @@
 # [728.Self Dividing Numbers][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
+A **self-dividing number** is a number that is divisible by every digit it contains.
+
+- For example, `128` is a **self-dividing number** because `128 % 1 == 0`, `128 % 2 == 0`, and `128 % 8 == 0`.
+
+A **self-dividing number** is not allowed to contain the digit zero.
+
+Given two integers `left` and `right`, return a list of all the **self-dividing numbers** in the range `[left, right]` (both **inclusive**).
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: left = 1, right = 22
+Output: [1,2,3,4,5,6,7,8,9,11,12,15,22]
 ```
 
-## 题意
-> ...
+**Example 2:**
 
-## 题解
-
-### 思路1
-> ...
-Self Dividing Numbers
-```go
 ```
-
+Input: left = 47, right = 85
+Output: [48,55,66,77]
+```
 
 ## 结语
 

leetcode/701-800/0728.Self-Dividing-Numbers/Solution.go

@@ -1,5 +1,26 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(left int, right int) []int {
+	var res []int
+	var ok func(int) bool
+	ok = func(n int) bool {
+		self := n
+		for n > 0 {
+			mod := n % 10
+			if mod == 0 {
+				return false
+			}
+			if self%mod != 0 {
+				return false
+			}
+			n /= 10
+		}
+		return true
+	}
+	for i := left; i <= right; i++ {
+		if ok(i) {
+			res = append(res, i)
+		}
+	}
+	return res
 }

leetcode/701-800/0728.Self-Dividing-Numbers/Solution_test.go

@@ -9,31 +9,30 @@ import (
 func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
-		name   string
-		inputs bool
-		expect bool
+		name        string
+		left, right int
+		expect      []int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", 1, 22, []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 15, 22}},
+		{"TestCase2", 47, 85, []int{48, 55, 66, 77}},
 	}
 
 	//	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.left, c.right)
 			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.left, c.right)
 			}
 		})
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }