{ "data": { "question": { "questionId": "1000292", "questionFrontendId": "剑指 Offer II 041", "categoryTitle": "LCOF2", "boundTopicId": 910287, "title": "滑动窗口的平均值", "titleSlug": "qIsx9U", "content": "

English description is not available for the problem. Please switch to Chinese.

\n", "translatedTitle": "滑动窗口的平均值", "translatedContent": "

给定一个整数数据流和一个窗口大小，根据该滑动窗口的大小，计算滑动窗口里所有数字的平均值。

\n\n

实现 MovingAverage 类：

\n\n\n\n

 

\n\n

示例：

\n\n
\n输入：\ninputs = ["MovingAverage", "next", "next", "next", "next"]\ninputs = [[3], [1], [10], [3], [5]]\n输出：\n[null, 1.0, 5.5, 4.66667, 6.0]\n\n解释：\nMovingAverage movingAverage = new MovingAverage(3);\nmovingAverage.next(1); // 返回 1.0 = 1 / 1\nmovingAverage.next(10); // 返回 5.5 = (1 + 10) / 2\nmovingAverage.next(3); // 返回 4.66667 = (1 + 10 + 3) / 3\nmovingAverage.next(5); // 返回 6.0 = (10 + 3 + 5) / 3\n
\n\n

 

\n\n

提示：

\n\n\n\n

 

\n\n

注意：本题与主站 346 题相同： https://leetcode-cn.com/problems/moving-average-from-data-stream/

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= new MovingAverage(size);\n * double param_1 = obj.next(val);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "code": "class MovingAverage(object):\n\n def __init__(self, size):\n \"\"\"\n Initialize your data structure here.\n :type size: int\n \"\"\"\n\n\n def next(self, val):\n \"\"\"\n :type val: int\n :rtype: float\n \"\"\"\n\n\n\n# Your MovingAverage object will be instantiated and called as such:\n# obj = MovingAverage(size)\n# param_1 = obj.next(val)", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "code": "class MovingAverage:\n\n def __init__(self, size: int):\n \"\"\"\n Initialize your data structure here.\n \"\"\"\n\n\n def next(self, val: int) -> float:\n\n\n\n# Your MovingAverage object will be instantiated and called as such:\n# obj = MovingAverage(size)\n# param_1 = obj.next(val)", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "code": "\n\n\ntypedef struct {\n\n} MovingAverage;\n\n/** Initialize your data structure here. */\n\nMovingAverage* movingAverageCreate(int size) {\n\n}\n\ndouble movingAverageNext(MovingAverage* obj, int val) {\n\n}\n\nvoid movingAverageFree(MovingAverage* obj) {\n\n}\n\n/**\n * Your MovingAverage struct will be instantiated and called as such:\n * MovingAverage* obj = movingAverageCreate(size);\n * double param_1 = movingAverageNext(obj, val);\n \n * movingAverageFree(obj);\n*/", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "code": "public class MovingAverage {\n\n /** Initialize your data structure here. */\n public MovingAverage(int size) {\n\n }\n \n public double Next(int val) {\n\n }\n}\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * MovingAverage obj = new MovingAverage(size);\n * double param_1 = obj.Next(val);\n */", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "code": "/**\n * Initialize your data structure here.\n * @param {number} size\n */\nvar MovingAverage = function(size) {\n\n};\n\n/** \n * @param {number} val\n * @return {number}\n */\nMovingAverage.prototype.next = function(val) {\n\n};\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * var obj = new MovingAverage(size)\n * var param_1 = obj.next(val)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Ruby", "langSlug": "ruby", "code": "class MovingAverage\n\n=begin\n Initialize your data structure here.\n :type size: Integer\n=end\n def initialize(size)\n\n end\n\n\n=begin\n :type val: Integer\n :rtype: Float\n=end\n def next(val)\n\n end\n\n\nend\n\n# Your MovingAverage object will be instantiated and called as such:\n# obj = MovingAverage.new(size)\n# param_1 = obj.next(val)", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "code": "\nclass MovingAverage {\n\n /** Initialize your data structure here. */\n init(_ size: Int) {\n\n }\n \n func next(_ val: Int) -> Double {\n\n }\n}\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * let obj = MovingAverage(size)\n * let ret_1: Double = obj.next(val)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "code": "type MovingAverage struct {\n\n}\n\n\n/** Initialize your data structure here. */\nfunc Constructor(size int) MovingAverage {\n\n}\n\n\nfunc (this *MovingAverage) Next(val int) float64 {\n\n}\n\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * obj := Constructor(size);\n * param_1 := obj.Next(val);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Scala", "langSlug": "scala", "code": "class MovingAverage(_size: Int) {\n\n /** Initialize your data structure here. */\n\n\n def next(`val`: Int): Double = {\n\n }\n\n}\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * var obj = new MovingAverage(size)\n * var param_1 = obj.next(`val`)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "code": "class MovingAverage(size: Int) {\n\n /** Initialize your data structure here. */\n\n\n fun next(`val`: Int): Double {\n\n }\n\n}\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * var obj = MovingAverage(size)\n * var param_1 = obj.next(`val`)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Rust", "langSlug": "rust", "code": "struct MovingAverage {\n\n}\n\n\n/**\n * `&self` means the method takes an immutable reference.\n * If you need a mutable reference, change it to `&mut self` instead.\n */\nimpl MovingAverage {\n\n /** Initialize your data structure here. */\n fn new(size: i32) -> Self {\n\n }\n \n fn next(&self, val: i32) -> f64 {\n\n }\n}\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * let obj = MovingAverage::new(size);\n * let ret_1: f64 = obj.next(val);\n */", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "code": "class MovingAverage {\n /**\n * Initialize your data structure here.\n * @param Integer $size\n */\n function __construct($size) {\n\n }\n\n /**\n * @param Integer $val\n * @return Float\n */\n function next($val) {\n\n }\n}\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * $obj = MovingAverage($size);\n * $ret_1 = $obj->next($val);\n */", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "code": "class MovingAverage {\n constructor(size: number) {\n\n }\n\n next(val: number): number {\n\n }\n}\n\n/**\n * Your MovingAverage object will be instantiated and called as such:\n * var obj = new MovingAverage(size)\n * var param_1 = obj.next(val)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Racket", "langSlug": "racket", "code": "(define moving-average%\n (class object%\n (super-new)\n\n ; size : exact-integer?\n (init-field\n size)\n \n ; next : exact-integer? -> flonum?\n (define/public (next val)\n\n )))\n\n;; Your moving-average% 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