Build an Array With Stack Operation

// In this problem we are doing basically build the array using stack method to push() and pop()
// TC - O(N + log(N))
// SC - O(1) if Answer list except

class Solution {
    public static List<String> buildArray(int[] target, int n) {
        List<String> shubhcode = new ArrayList<>();
        int temp = 1; // The temp number to be pushed.

        for (int i = 0; i < target.length; i++) {
            while (temp < target[i]) {
                // While the temp number is less than the target number,
                // push the temp number and generate the "Push" operation.
                shubhcode.add("Push");
                shubhcode.add("Pop"); // After pushing, immediately pop.
                temp++;
            }

            // The temp number matches the target number, so push it.
            shubhcode.add("Push");

            temp++; // Move to the next number to be pushed.
        }

        return shubhcode;
    }
}