Fenwick Tree

Range Sum Query - Mutable

January 27, 2024
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Fenwick Tree

Problem Statement # Given an integer array nums, handle multiple queries of the following types: Update the value of an element in nums. Calculate the sum of the elements of nums between indices left and right inclusive where left <= right. Implement the NumArray class: NumArray(int[] nums): Initializes the object with the integer array nums. void update(int index, int val): Updates the value of nums[index] to be val. int sumRange(int left, int right): Returns the sum of the elements of nums between indices left and right inclusive (i. ...