| { |
| "id": 3463, |
| "name": "alternating-groups-i", |
| "difficulty": "Easy", |
| "link": "https://leetcode.com/problems/alternating-groups-i/", |
| "date": "2024-06-22", |
| "task_description": "There is a circle of red and blue tiles. You are given an array of integers `colors`. The color of tile `i` is represented by `colors[i]`: `colors[i] == 0` means that tile `i` is **red**. `colors[i] == 1` means that tile `i` is **blue**. Every 3 contiguous tiles in the circle with **alternating** colors (the middle tile has a different color from its **left** and **right** tiles) is called an **alternating** group. Return the number of **alternating** groups. **Note** that since `colors` represents a **circle**, the **first** and the **last** tiles are considered to be next to each other. **Example 1:** **Input:** colors = [1,1,1] **Output:** 0 **Explanation:** **Example 2:** **Input:** colors = [0,1,0,0,1] **Output:** 3 **Explanation:** Alternating groups: ******** **Constraints:** `3 <= colors.length <= 100` `0 <= colors[i] <= 1`", |
| "test_case": [ |
| { |
| "label": "Example 1", |
| "input": "colors = [1,1,1]", |
| "output": "0 " |
| }, |
| { |
| "label": "Example 2", |
| "input": "colors = [0,1,0,0,1]", |
| "output": "3 " |
| } |
| ], |
| "constraints": [ |
| "colors[i] == 0 means that tile i is red.", |
| "colors[i] == 1 means that tile i is blue.", |
| "3 <= colors.length <= 100", |
| "0 <= colors[i] <= 1" |
| ], |
| "python_template": "class Solution(object):\n def numberOfAlternatingGroups(self, colors):\n \"\"\"\n :type colors: List[int]\n :rtype: int\n \"\"\"\n ", |
| "java_template": "class Solution {\n public int numberOfAlternatingGroups(int[] colors) {\n \n }\n}", |
| "metadata": { |
| "func_name": "numberOfAlternatingGroups" |
| } |
| } |
