alternating_groups_i/meta.json

{
    "id": 3463,
    "name": "alternating_groups_i",
    "difficulty": "Easy",
    "link": "https://leetcode.com/problems/alternating-groups-i/",
    "date": "2024-06-22 00:00:00",
    "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`",
    "public_test_cases": [
        {
            "label": "Example 1",
            "input": "colors = [1,1,1]",
            "output": "0 "
        },
        {
            "label": "Example 2",
            "input": "colors = [0,1,0,0,1]",
            "output": "3 "
        }
    ],
    "private_test_cases": [
        {
            "input": [
                1,
                0,
                1,
                1,
                0,
                0,
                0,
                1,
                1,
                0,
                0,
                1,
                0,
                1,
                0,
                0,
                1,
                1,
                0,
                0,
                1,
                0,
                0,
                0,
                0,
                0,
                1,
                0,
                1,
                0,
                1,
                0,
                0
            ],
            "output": 11
        },
        {
            "input": [
                0,
                1,
                0,
                1,
                1,
                1,
                1,
                1,
                1,
                1,
                0,
                0,
                0,
                1,
                1,
                1,
                1,
                1,
                1,
                1,
                0,
                1,
                0,
                0,
                1,
                0,
                1,
                0,
                0,
                1,
                1,
                0,
                1,
                0,
                0,
                0,
                0,
                0,
                1,
                0,
                1,
                0,
                0,
                1,
                0,
                0,
                1,
                1,
                1,
                1,
                0,
                1,
                0,
                1,
                0,
                0,
                0,
                1,
                0,
                0,
                1,
                1,
                1,
                1,
                1,
                1,
                0,
                1,
                1,
                1,
                0,
                1,
                1,
                1,
                1,
                1,
                1,
                1,
                0,
                1,
                0,
                1,
                0,
                1,
                1,
                1,
                0,
                1,
                0,
                1,
                1,
                1,
                1,
                0,
                1,
                1
            ],
            "output": 30
        },
        {
            "input": [
                1,
                0,
                0,
                0,
                0,
                0,
                1,
                0,
                1,
                0,
                1,
                1,
                0,
                0,
                0,
                0,
                1,
                1,
                1,
                0,
                0,
                1,
                0,
                0,
                1,
                1,
                0,
                0,
                1,
                1
            ],
            "output": 5
        },
        {
            "input": [
                1,
                1,
                0,
                0,
                1,
                0,
                1,
                0,
                0,
                1,
                0,
                0,
                1,
                1,
                1,
                1,
                0,
                1,
                1,
                0,
                1,
                1,
                0,
                1,
                1,
                1,
                0,
                1,
                0,
                0,
                1,
                0,
                1,
                1,
                0,
                0,
                1,
                0,
                1,
                0,
                1,
                1,
                1,
                1,
                1,
                0,
                0,
                1,
                0,
                1,
                1,
                0,
                0,
                0,
                0,
                0,
                1,
                1,
                1,
                0,
                0,
                1,
                0,
                0,
                1,
                1,
                1,
                0
            ],
            "output": 19
        },
        {
            "input": [
                0,
                1,
                0,
                0,
                1,
                1,
                1,
                1,
                0,
                1,
                0,
                1,
                1,
                1,
                0,
                0,
                1,
                0,
                0,
                0,
                1,
                1,
                0,
                1,
                0,
                0,
                1,
                1,
                1,
                1,
                1,
                1,
                0,
                1,
                1,
                0,
                0,
                0,
                1,
                1,
                0,
                1,
                0,
                0,
                0,
                0,
                1,
                1,
                0,
                0,
                0,
                0,
                1,
                0
            ],
            "output": 11
        }
    ],
    "haskell_template": "numberOfAlternatingGroups :: [Int] -> Int\nnumberOfAlternatingGroups colors ",
    "ocaml_template": "let numberOfAlternatingGroups (colors: int list) : int =  ",
    "scala_template": "def numberOfAlternatingGroups(colors: List[Int]): Int = { \n    \n}",
    "java_template": "class Solution {\n    public int numberOfAlternatingGroups(int[] colors) {\n        \n    }\n}",
    "python_template": "class Solution(object):\n    def numberOfAlternatingGroups(self, colors):\n        \"\"\"\n        :type colors: List[int]\n        :rtype: int\n        \"\"\"\n        "
}