Minimum Size Subarray Sum

Given an array of positive integers nums and a positive integer target, return the minimal length of a contiguous subarray of which the sum is greater than or equal to target. If there is no such subarray, return 0 instead. Input: - The first line contains an integer n (1 ≤ n ≤ 10^5): the size of the array. - The second line contains n positive integers. - The third line contains the target integer. Output: - An integer representing the minimal length of the subarray with sum >= target. Example: Input: 8 2 3 1 2 4 3 7 Output: 2