Diet Plan Performance

Understand how to use the sliding window pattern to evaluate a dieter's performance by calculating total calories over consecutive days. This lesson helps you develop a solution that assesses points gained or lost based on calorie intake thresholds, enhancing your skills in array processing and pattern recognition.

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Statement

A dieter consumes calories[i] calories on the i-th day.

Given an integer k, the dieter reviews their calorie intake over every sequence of k consecutive days (from calories[i] to calories[i+k-1] for all 0 <= i <= n-k). For each sequence, they calculate T, the total calories consumed over those k days:

If T is less than lower, the dieter performs poorly and loses 1 point.
If T is greater than upper, the dieter performs better and gains 1 point.
If T is between lower and upper (inclusive), the dieter’s performance is normal, and their points remain the same.

The dieter starts with zero points. Return the total points after the dieter follows this routine for all calories.length days. The total points can be negative.

Constraints