Merge pull request #1159 from 0xff-dev/2033

Add solution and test-cases for problem 2033

Author: 6boris

leetcode/2001-2100/2033.Minimum-Operations-to-Make-a-Uni-Value-Grid/1.png

@@ -1,28 +1,45 @@
 # [2033.Minimum Operations to Make a Uni-Value Grid][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 a 2D integer `grid` of size `m x n` and an integer `x`. In one operation, you can **add** `x` to or **subtract** `x` from any element in the `grid`.
+
+A **uni-value** grid is a grid where all the elements of it are equal.
+
+Return the **minimum** number of operations to make the grid **uni-value**. If it is not possible, return `-1`.
 
-**Example 1:**
+**Example 1:**  
+
+![1](./1.png)
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: grid = [[2,4],[6,8]], x = 2
+Output: 4
+Explanation: We can make every element equal to 4 by doing the following: 
+- Add x to 2 once.
+- Subtract x from 6 once.
+- Subtract x from 8 twice.
+A total of 4 operations were used.
 ```
 
-## 题意
-> ...
+**Example 2:**  
 
-## 题解
+![2](./2.png)
 
-### 思路1
-> ...
-Minimum Operations to Make a Uni-Value Grid
-```go
+```
+Input: grid = [[1,5],[2,3]], x = 1
+Output: 5
+Explanation: We can make every element equal to 3.
 ```
 
+**Example 3:**  
+
+![3](./3.png)
+
+```
+Input: grid = [[1,2],[3,4]], x = 2
+Output: -1
+Explanation: It is impossible to make every element equal.
+```
 
 ## 结语
 

leetcode/2001-2100/2033.Minimum-Operations-to-Make-a-Uni-Value-Grid/2.png

@@ -1,5 +1,27 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+import "sort"
+
+func Solution(grid [][]int, x int) int {
+	list := []int{}
+	rows, cols := len(grid), len(grid[0])
+	for i := range rows {
+		for j := range cols {
+			list = append(list, grid[i][j])
+		}
+	}
+	sort.Ints(list)
+	mid := list[len(list)/2]
+	ans := 0
+	for _, n := range list {
+		if n%x != mid%x {
+			return -1
+		}
+		diff := n - mid
+		if diff < 0 {
+			diff = -diff
+		}
+		ans += diff / x
+	}
+	return ans
 }

leetcode/2001-2100/2033.Minimum-Operations-to-Make-a-Uni-Value-Grid/3.png

@@ -10,30 +10,31 @@ func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
 		name   string
-		inputs bool
-		expect bool
+		grid   [][]int
+		x      int
+		expect int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", [][]int{{2, 4}, {6, 8}}, 2, 4},
+		{"TestCase2", [][]int{{1, 5}, {2, 3}}, 1, 5},
+		{"TestCase3", [][]int{{1, 2}, {3, 4}}, 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.grid, c.x)
 			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.grid, c.x)
 			}
 		})
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }