Скачать или смотреть 1526 Minimum Number of Increments on Subarrays to Form a Target Array

1526 Minimum Number of Increments on Subarrays to Form a Target Array. This Java code uses a greedy "skyline" approach:

Key Insight: Think of the target array as a skyline. You only need to pay for going up, not down.

How it works:
1. Start by "building" the first element: ops = target[0]
2. For each subsequent element:
If it's higher than the previous then add the difference (you need more operations)
If it's lower or equal then do nothing (you just stop earlier operations)

Why this works:
When you increment a subarray, you can choose which positions to include
Upward steps require NEW operations
Downward steps are FREE, just exclude those positions from previous operations

Time Complexity: O(n) single pass
Space Complexity: O(1) only tracking operations count

The algorithm essentially counts the "total ascent" in the array, which equals the minimum operations needed.