Add solution and test-cases for problem 3512

leetcode/3501-3600/3512.Minimum-Operations-to-Make-Array-Sum-Divisible-by-K/README.md

@@ -1,28 +1,49 @@
 # [3512.Minimum Operations to Make Array Sum Divisible by K][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` and an integer `k`. You can perform the following operation any number of times:
+
+- Select an index `i` and replace `nums[i]` with `nums[i] - 1`.
+
+Return the **minimum** number of operations required to make the sum of the array divisible by `k`.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: nums = [3,9,7], k = 5
+
+Output: 4
+
+Explanation:
+
+Perform 4 operations on nums[1] = 9. Now, nums = [3, 5, 7].
+The sum is 15, which is divisible by 5.
 ```
 
-## 题意
-> ...
+**Example 2:**
+
+```
+Input: nums = [4,1,3], k = 4
 
-## 题解
+Output: 0
+
+Explanation:
+
+The sum is 8, which is already divisible by 4. Hence, no operations are needed.
+```
+
+**Example 3:**
 
-### 思路1
-> ...
-Minimum Operations to Make Array Sum Divisible by K
-```go
 ```
+Input: nums = [3,2], k = 6
 
+Output: 5
+
+Explanation:
+
+Perform 3 operations on nums[0] = 3 and 2 operations on nums[1] = 2. Now, nums = [0, 0].
+The sum is 0, which is divisible by 6.
+```
 
 ## 结语
 

leetcode/3501-3600/3512.Minimum-Operations-to-Make-Array-Sum-Divisible-by-K/Solution.go

@@ -1,5 +1,9 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(nums []int, k int) int {
+	sum := 0
+	for _, n := range nums {
+		sum += n
+	}
+	return sum % k
 }

leetcode/3501-3600/3512.Minimum-Operations-to-Make-Array-Sum-Divisible-by-K/Solution_test.go

@@ -10,30 +10,31 @@ 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{3, 9, 7}, 5, 4},
+		{"TestCase2", []int{4, 1, 3}, 4, 0},
+		{"TestCase3", []int{3, 2}, 6, 5},
 	}
 
 	//	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() {
 }