{ "data": { "question": { "questionId": "303", "questionFrontendId": "303", "categoryTitle": "Algorithms", "boundTopicId": 1465, "title": "Range Sum Query - Immutable", "titleSlug": "range-sum-query-immutable", "content": "

Given an integer array nums, handle multiple queries of the following type:

\n\n
    \n\t
  1. Calculate the sum of the elements of nums between indices left and right inclusive where left <= right.
    2. \n
\n\n

Implement the NumArray class:

\n\n\n\n

 

\n

Example 1:

\n\n
\nInput\n["NumArray", "sumRange", "sumRange", "sumRange"]\n[[[-2, 0, 3, -5, 2, -1]], [0, 2], [2, 5], [0, 5]]\nOutput\n[null, 1, -1, -3]\n\nExplanation\nNumArray numArray = new NumArray([-2, 0, 3, -5, 2, -1]);\nnumArray.sumRange(0, 2); // return (-2) + 0 + 3 = 1\nnumArray.sumRange(2, 5); // return 3 + (-5) + 2 + (-1) = -1\nnumArray.sumRange(0, 5); // return (-2) + 0 + 3 + (-5) + 2 + (-1) = -3\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "区域和检索 - 数组不可变", "translatedContent": "

给定一个整数数组  nums，处理以下类型的多个查询:

\n\n
    \n\t
  1. 计算索引 left 和 right （包含 left 和 right）之间的 nums 元素的 和 ，其中 left <= right
    2. \n
\n\n

实现 NumArray 类：

\n\n\n\n

 

\n\n

示例 1：

\n\n
\n输入：\n[\"NumArray\", \"sumRange\", \"sumRange\", \"sumRange\"]\n[[[-2, 0, 3, -5, 2, -1]], [0, 2], [2, 5], [0, 5]]\n输出：\n[null, 1, -1, -3]\n\n解释：\nNumArray numArray = new NumArray([-2, 0, 3, -5, 2, -1]);\nnumArray.sumRange(0, 2); // return 1 ((-2) + 0 + 3)\nnumArray.sumRange(2, 5); // return -1 (3 + (-5) + 2 + (-1)) \nnumArray.sumRange(0, 5); // return -3 ((-2) + 0 + 3 + (-5) + 2 + (-1))\n
\n\n

 

\n\n

提示：

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Your NumArray object will be instantiated and called as such:\n * NumArray* obj = new NumArray(nums);\n * int param_1 = obj->sumRange(left,right);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Java", "langSlug": "java", "code": "class NumArray {\n\n public NumArray(int[] nums) {\n\n }\n \n public int sumRange(int left, int right) {\n\n }\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * NumArray obj = new NumArray(nums);\n * int param_1 = obj.sumRange(left,right);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "code": "class NumArray(object):\n\n def __init__(self, nums):\n \"\"\"\n :type nums: List[int]\n \"\"\"\n\n\n def sumRange(self, left, right):\n \"\"\"\n :type left: int\n :type right: int\n :rtype: int\n \"\"\"\n\n\n\n# Your NumArray object will be instantiated and called as such:\n# obj = NumArray(nums)\n# param_1 = obj.sumRange(left,right)", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "code": "class NumArray:\n\n def __init__(self, nums: List[int]):\n\n\n def sumRange(self, left: int, right: int) -> int:\n\n\n\n# Your NumArray object will be instantiated and called as such:\n# obj = NumArray(nums)\n# param_1 = obj.sumRange(left,right)", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "code": "\n\n\ntypedef struct {\n \n} NumArray;\n\n\nNumArray* numArrayCreate(int* nums, int numsSize) {\n \n}\n\nint numArraySumRange(NumArray* obj, int left, int right) {\n \n}\n\nvoid numArrayFree(NumArray* obj) {\n \n}\n\n/**\n * Your NumArray struct will be instantiated and called as such:\n * NumArray* obj = numArrayCreate(nums, numsSize);\n * int param_1 = numArraySumRange(obj, left, right);\n \n * numArrayFree(obj);\n*/", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "code": "public class NumArray {\n\n public NumArray(int[] nums) {\n\n }\n \n public int SumRange(int left, int right) {\n\n }\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * NumArray obj = new NumArray(nums);\n * int param_1 = obj.SumRange(left,right);\n */", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "code": "/**\n * @param {number[]} nums\n */\nvar NumArray = function(nums) {\n\n};\n\n/** \n * @param {number} left \n * @param {number} right\n * @return {number}\n */\nNumArray.prototype.sumRange = function(left, right) {\n\n};\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * var obj = new NumArray(nums)\n * var param_1 = obj.sumRange(left,right)\n */", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "code": "class NumArray {\n constructor(nums: number[]) {\n \n }\n\n sumRange(left: number, right: number): number {\n \n }\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * var obj = new NumArray(nums)\n * var param_1 = obj.sumRange(left,right)\n */", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "code": "class NumArray {\n /**\n * @param Integer[] $nums\n */\n function __construct($nums) {\n\n }\n\n /**\n * @param Integer $left\n * @param Integer $right\n * @return Integer\n */\n function sumRange($left, $right) {\n\n }\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * $obj = NumArray($nums);\n * $ret_1 = $obj->sumRange($left, $right);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "code": "\nclass NumArray {\n\n init(_ nums: [Int]) {\n\n }\n \n func sumRange(_ left: Int, _ right: Int) -> Int {\n\n }\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * let obj = NumArray(nums)\n * let ret_1: Int = obj.sumRange(left, right)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "code": "class NumArray(nums: IntArray) {\n\n fun sumRange(left: Int, right: Int): Int {\n\n }\n\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * var obj = NumArray(nums)\n * var param_1 = obj.sumRange(left,right)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Dart", "langSlug": "dart", "code": "class NumArray {\n\n NumArray(List nums) {\n \n }\n \n int sumRange(int left, int right) {\n \n }\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * NumArray obj = NumArray(nums);\n * int param1 = obj.sumRange(left,right);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "code": "type NumArray struct {\n\n}\n\n\nfunc Constructor(nums []int) NumArray {\n\n}\n\n\nfunc (this *NumArray) SumRange(left int, right int) int {\n\n}\n\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * obj := Constructor(nums);\n * param_1 := obj.SumRange(left,right);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Ruby", "langSlug": "ruby", "code": "class NumArray\n\n=begin\n :type nums: Integer[]\n=end\n def initialize(nums)\n\n end\n\n\n=begin\n :type left: Integer\n :type right: Integer\n :rtype: Integer\n=end\n def sum_range(left, right)\n\n end\n\n\nend\n\n# Your NumArray object will be instantiated and called as such:\n# obj = NumArray.new(nums)\n# param_1 = obj.sum_range(left, right)", "__typename": "CodeSnippetNode" }, { "lang": "Scala", "langSlug": "scala", "code": "class NumArray(_nums: Array[Int]) {\n\n def sumRange(left: Int, right: Int): Int = {\n\n }\n\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * var obj = new NumArray(nums)\n * var param_1 = obj.sumRange(left,right)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Rust", "langSlug": "rust", "code": "struct NumArray {\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 NumArray {\n\n fn new(nums: Vec) -> Self {\n\n }\n \n fn sum_range(&self, left: i32, right: i32) -> i32 {\n\n }\n}\n\n/**\n * Your NumArray object will be instantiated and called as such:\n * let obj = NumArray::new(nums);\n * let ret_1: i32 = obj.sum_range(left, right);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Racket", "langSlug": "racket", "code": "(define num-array%\n (class object%\n (super-new)\n \n ; nums : (listof exact-integer?)\n (init-field\n nums)\n \n ; sum-range : exact-integer? exact-integer? -> exact-integer?\n (define/public (sum-range left right)\n )))\n\n;; Your num-array% object will be instantiated and called as such:\n;; (define obj (new num-array% [nums nums]))\n;; (define param_1 (send obj sum-range left right))", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "-spec num_array_init_(Nums :: [integer()]) -> any().\nnum_array_init_(Nums) ->\n .\n\n-spec num_array_sum_range(Left :: integer(), Right :: integer()) -> integer().\nnum_array_sum_range(Left, Right) ->\n .\n\n\n%% Your functions will be called as such:\n%% 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