# 1441. Build an Array With Stack Operations ###### tags: `Leetcode` `Easy` Link: https://leetcode.com/problems/build-an-array-with-stack-operations/ ## Code ```java= class Solution { public List<String> buildArray(int[] target, int n) { List<String> ans = new ArrayList<>(); int idx = 0; int num = 1; while(idx<target.length){ ans.add("Push"); if(target[idx]==num){ idx++; } else{ ans.add("Pop"); } num++; } return ans; } } ```