Given an array of positive integers nums and a positive integer target, return the minimal length of a subarray whose sum is greater than or equal to target. If there is no such subarray, return 0 instead.
A subarray is a contiguous non-empty sequence of elements within an array.
1 <= target <= 10^91 <= nums.length <= 10^51 <= nums[i] <= 10^4target = 7, nums = [2,3,1,2,4,3]2target = 4, nums = [1,4,4]1target = 11, nums = [1,1,1,1,1,1,1,1]0