Solving Range Sum Query - Mutable
class NumArray { public: NumArray(vector<int> nums) { Image.push_back(vector<int>(nums)); int size = nums.size(); int level = 1; while(size >= 10) { Image.push_back(vector<int>(size/10, 0)); for(int i = 0; i < size/10; i++) { int localSum = 0; for(in...