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Create 0303-range-sum-query-immutable.js

Solved range-sum-query-immutable.File(s) Added: 0303-range-sum-query-immutable.jsLanguage(s) Used: JavaScriptSubmission URL:https://leetcode.com/problems/range-sum-query-immutable/submissions/946368367/

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	`1`	`+/**`
	`2`	`+ *@param {number[]} nums`
	`3`	`+ */`
	`4`	`+varNumArray=function(nums){`
	`5`	`+this.arr=nums;`
	`6`	`+};`
	`7`	`+`
	`8`	`+/**`
	`9`	`+ * https://leetcode.com/problems/range-sum-query-immutable/description/`
	`10`	`+ * Time O(n) \| Space O(1)`
	`11`	`+ *@param {number} left`
	`12`	`+ *@param {number} right`
	`13`	`+ *@return {number}`
	`14`	`+ */`
	`15`	`+NumArray.prototype.sumRange=function(left,right){`
	`16`	`+`
	`17`	`+lettotal=0;`
	`18`	`+for(leti=left;i<right+1;i++){`
	`19`	`+total+=this.arr[i];`
	`20`	`+}`
	`21`	`+returntotal`
	`22`	`+};`
	`23`	`+`
	`24`	`+/**`
	`25`	`+ * Your NumArray object will be instantiated and called as such:`
	`26`	`+ * var obj = new NumArray(nums)`
	`27`	`+ * var param_1 = obj.sumRange(left,right)`
	`28`	`+ */`

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