new_contents: class Solution:
      # @param {integer} s
      # @param {integer[]} nums
      # @return {integer}
  
      def minSubArrayLen(self, s, nums):
          if not nums:
              return 0
          n = len(nums)
          i = j = cur = 0
          res = n+1
          while j < n:
              cur += nums[j]
              while cur >= s and i <= j:
                  res = min(res, j-i+1)
                  cur -= nums[i]
                  i += 1
              j += 1
          if res == n+1:
              res = 0
          return res
  
subject: add solution for Minimum Size Subarray Sum