{ "data": { "question": { "questionId": "2779", "questionFrontendId": "2672", "categoryTitle": "Algorithms", "boundTopicId": 2254952, "title": "Number of Adjacent Elements With the Same Color", "titleSlug": "number-of-adjacent-elements-with-the-same-color", "content": "

You are given an integer n representing an array colors of length n where all elements are set to 0's meaning uncolored. You are also given a 2D integer array queries where queries[i] = [indexi, colori]. For the ith query:

\n\n\n\n

Return an array answer of the same length as queries where answer[i] is the answer to the ith query.

\n\n

 

\n

Example 1:

\n\n
\n

Input: n = 4, queries = [[0,2],[1,2],[3,1],[1,1],[2,1]]

\n\n

Output: [0,1,1,0,2]

\n\n

Explanation:

\n\n\n
\n\n

Example 2:

\n\n
\n

Input: n = 1, queries = [[0,100000]]

\n\n

Output: [0]

\n\n

Explanation:

\n\n

After the 1st query colors = [100000]. The count of adjacent pairs with the same color is 0.

\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "有相同颜色的相邻元素数目", "translatedContent": "

给你一个下标从 0 开始、长度为 n 的数组 nums 。一开始，所有元素都是 未染色 （值为 0 ）的。

\n\n

给你一个二维整数数组 queries ，其中 queries[i] = [indexi, colori] 。

\n\n

对于每个操作，你需要将数组 nums 中下标为 indexi 的格子染色为 colori 。

\n\n

请你返回一个长度与 queries 相等的数组 answer ，其中 answer[i]是前 i 个操作 之后 ，相邻元素颜色相同的数目。

\n\n

更正式的，answer[i] 是执行完前 i 个操作后，0 <= j < n - 1 的下标 j 中，满足 nums[j] == nums[j + 1] 且 nums[j] != 0 的数目。

\n\n

 

\n\n

示例 1：

\n\n
\n输入：n = 4, queries = [[0,2],[1,2],[3,1],[1,1],[2,1]]\n输出：[0,1,1,0,2]\n解释：一开始数组 nums = [0,0,0,0] ，0 表示数组中还没染色的元素。\n- 第 1 个操作后，nums = [2,0,0,0] 。相邻元素颜色相同的数目为 0 。\n- 第 2 个操作后，nums = [2,2,0,0] 。相邻元素颜色相同的数目为 1 。\n- 第 3 个操作后，nums = [2,2,0,1] 。相邻元素颜色相同的数目为 1 。\n- 第 4 个操作后，nums = [2,1,0,1] 。相邻元素颜色相同的数目为 0 。\n- 第 5 个操作后，nums = [2,1,1,1] 。相邻元素颜色相同的数目为 2 。\n
\n\n

示例 2：

\n\n
\n输入：n = 1, queries = [[0,100000]]\n输出：[0]\n解释：一开始数组 nums = [0] ，0 表示数组中还没染色的元素。\n- 第 1 个操作后，nums = [100000] 。相邻元素颜色相同的数目为 0 。\n
\n\n

 

\n\n

提示：

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Similarly contributes its left element too.", "After changing the color, if the element has the same color as its right element answer increases by 1. Similarly contributes its left element too." ], "solution": null, "status": null, "sampleTestCase": "4\n[[0,2],[1,2],[3,1],[1,1],[2,1]]", "metaData": "{\n \"name\": \"colorTheArray\",\n \"params\": [\n {\n \"name\": \"n\",\n \"type\": \"integer\"\n },\n {\n \"type\": \"integer[][]\",\n \"name\": \"queries\"\n }\n ],\n \"return\": {\n \"type\": \"integer[]\"\n }\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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    }
}