class NumArray {
private int[] sums;
public NumArray(int[] nums) {
sums = new int[nums.length];
if(nums.length == 0){
return;
}
sums[0] = nums[0];
for(int i=1; i

class NumArray {
private int[] sums;
public NumArray(int[] nums) {
sums = new int[nums.length];
if(nums.length == 0){
return;
}
sums[0] = nums[0];
for(int i=1; i