Solution

Iterate the array, use two point

Code

class Solution {
public int subarraySum(int[] nums, int k) {
int res = 0;
for(int i=0;i<nums.length;i++){
int sum = 0;
for(int j=i;j<nums.length;j++){
sum+=nums[j];
if(sum == k) res++;
}
}
return res;
}
}