Max Window Total Coding

EasyPython

Problem

A Cox Automotive USA vehicle inventory feed contains sequential numeric values such as daily listing activity or pricing adjustments. Given an integer array and a fixed window length, return the maximum total of any consecutive sequence containing exactly windowSize values.

Implement:

def max_window_total(values, windowSize):

The window must contain adjacent elements, and it may begin at any valid index. The input array must not be modified. Aim for a single-pass solution with constant additional space. Consider negative values and totals that exceed a 32-bit integer during intermediate calculations.

Formal Specification

Input: values, a non-empty array of integers, and windowSize, an integer.
Output: An integer equal to the largest sum of any consecutive subarray of length windowSize.
The function should raise no special-case behavior because the constraints guarantee valid inputs.

Constraints

1 <= len(values) <= 1,000,000
1 <= windowSize <= len(values)
-10^9 <= values[i] <= 10^9
The input array is non-empty and windowSize is valid
The input array must not be modified

Function Signature

def max_window_total(values, windowSize):

Implement:

def max_window_total(values, windowSize):

Formal Specification

Input: values, a non-empty array of integers, and windowSize, an integer.
Output: An integer equal to the largest sum of any consecutive subarray of length windowSize.
The function should raise no special-case behavior because the constraints guarantee valid inputs.