1441. Build an Array With Stack Operations¶ Time: Space: Python 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17class Solution: def buildArray(self, target: List[int], n: int) -> List[str]: ans = [] i = 0 # Target pointer num = 1 # Curr num while i < len(target): t = target[i] if t == num: ans.append("Push") i += 1 else: ans.append("Push") ans.append("Pop") num += 1 return ans