{ "data": { "question": { "questionId": "2199", "questionFrontendId": "2078", "categoryTitle": "Algorithms", "boundTopicId": 1109923, "title": "Two Furthest Houses With Different Colors", "titleSlug": "two-furthest-houses-with-different-colors", "content": "

There are n houses evenly lined up on the street, and each house is beautifully painted. You are given a 0-indexed integer array colors of length n, where colors[i] represents the color of the ith house.

\n\n

Return the maximum distance between two houses with different colors.

\n\n

The distance between the ith and jth houses is abs(i - j), where abs(x) is the absolute value of x.

\n\n

 

\n

Example 1:

\n\"\"\n
\nInput: colors = [1,1,1,6,1,1,1]\nOutput: 3\nExplanation: In the above image, color 1 is blue, and color 6 is red.\nThe furthest two houses with different colors are house 0 and house 3.\nHouse 0 has color 1, and house 3 has color 6. The distance between them is abs(0 - 3) = 3.\nNote that houses 3 and 6 can also produce the optimal answer.\n
\n\n

Example 2:

\n\"\"\n
\nInput: colors = [1,8,3,8,3]\nOutput: 4\nExplanation: In the above image, color 1 is blue, color 8 is yellow, and color 3 is green.\nThe furthest two houses with different colors are house 0 and house 4.\nHouse 0 has color 1, and house 4 has color 3. The distance between them is abs(0 - 4) = 4.\n
\n\n

Example 3:

\n\n
\nInput: colors = [0,1]\nOutput: 1\nExplanation: The furthest two houses with different colors are house 0 and house 1.\nHouse 0 has color 0, and house 1 has color 1. The distance between them is abs(0 - 1) = 1.\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "两栋颜色不同且距离最远的房子", "translatedContent": "

街上有 n 栋房子整齐地排成一列，每栋房子都粉刷上了漂亮的颜色。给你一个下标从 0 开始且长度为 n 的整数数组 colors ，其中 colors[i] 表示第  i 栋房子的颜色。

\n\n

返回 两栋 颜色 不同 房子之间的 最大 距离。

\n\n

第 i 栋房子和第 j 栋房子之间的距离是 abs(i - j) ，其中 abs(x) 是 x 的绝对值。

\n\n

 

\n\n

示例 1：

\n\n

\"\"

\n\n
\n输入：colors = [1,1,1,6,1,1,1]\n输出：3\n解释：上图中，颜色 1 标识成蓝色，颜色 6 标识成红色。\n两栋颜色不同且距离最远的房子是房子 0 和房子 3 。\n房子 0 的颜色是颜色 1 ，房子 3 的颜色是颜色 6 。两栋房子之间的距离是 abs(0 - 3) = 3 。\n注意，房子 3 和房子 6 也可以产生最佳答案。\n
\n\n

示例 2：

\n\n

\"\"

\n\n
\n输入：colors = [1,8,3,8,3]\n输出：4\n解释：上图中，颜色 1 标识成蓝色，颜色 8 标识成黄色，颜色 3 标识成绿色。\n两栋颜色不同且距离最远的房子是房子 0 和房子 4 。\n房子 0 的颜色是颜色 1 ，房子 4 的颜色是颜色 3 。两栋房子之间的距离是 abs(0 - 4) = 4 。\n
\n\n

示例 3：

\n\n
\n输入：colors = [0,1]\n输出：1\n解释：两栋颜色不同且距离最远的房子是房子 0 和房子 1 。\n房子 0 的颜色是颜色 0 ，房子 1 的颜色是颜色 1 。两栋房子之间的距离是 abs(0 - 1) = 1 。\n
\n\n

 

\n\n

提示：

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