Minimum Size Subarray Sum Problem
Problem 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. OR Given an array of positive integers a and a positive number K, find the length of the smallest contiguous subarray whose sum is greater than or equal to K. Return 0 if no such subarray exists. ...