Subtract Until Zero or Less

Given an integer array, repeatedly choose the first non-zero element and subtract the value of the first element from it. Repeat this until all elements become zero or you encounter a strictly less value than the current processing element. Input: A non-negative integer array arr Output: The array at the time processing ends Example: Input: [3, 3, 2, 1, 1] Output: [0, 0, 1, 1, 1] Explanation: Subtract 3 from the two leading 3s to get [0, 0, 2, 1, 1], then subtract 2, finally reaching [0, 0, 1, 1, 1]. Data Scale: The length of array arr is at most 1000. Example Input [3, 3, 2, 1, 1]