Zero Array Transformation I - Solution & Explanation

This approach utilizes the concept of difference arrays to efficiently apply the operations for each query range. Instead of decrementing elements directly, we apply the operations incrementally over the range, which allows us to keep track of cumulative changes.

The solution uses a 'delta' array to apply increments and decrements at specific points, which is very efficient for range update operations. For each query, we decrement the starting index of the range by 1 and increment the position just after the end of the range by 1. Then, we propagate these effects across the 'nums' array using a cumulative carry. Finally, we check if every element in the final array is zero or not.

This approach directly applies decrement operations specified by each query to the range given. Though simple to understand, it may not be efficient for large input sizes due to the repetitive operations. Consider optimizing if the constraints are strict.

This solution directly walks over each query range and decrements the values if they are greater than zero. After all queries, it checks if every element is zero. This is not time efficient for large datasets but is straightforward to understand and serves as a baseline approach.