303. 区域和检索 - 数组不可变.cpp

class NumArray {
public:
vector<int>temp;
    NumArray(vector<int>& nums) {
        temp=nums;
    }
    
    int sumRange(int left, int right) {
        int sum=0;
        for(int i=left;i<=right;i++){
            sum+=temp[i];
        }
        return sum;
    }
};

/**
 * Your NumArray object will be instantiated and called as such:
 * NumArray* obj = new NumArray(nums);
 * int param_1 = obj->sumRange(left,right);
 */