subarray_sum

class Solution:
    """
    @param nums: A list of integers
    @return: A list of integers includes the index of the first number and the index of the last number
    """
    def subarraySum(self, nums):
        # write your code here
        sums = [0]
        i = 0
        for num in nums:
            sums.append(sums[i]+num)
            i+=1
        for i in range(len(sums)):
            if sums[i] in sums[i+1:]:
                return [i,sums.index(sums[i])-1]