import java.util.*; public class Solution { /** * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 * * * @param pushV int整型一维数组 * @param popV int整型一维数组 * @return bool布尔型 */ public boolean IsPopOrder (int[] pushV, int[] popV) { Stack<Integer> stack = new Stack<>(); int j = 0; for (int i = 0;i < pushV.length;i++) { stack.push(pushV[i]); while (!stack.empty() && j < popV.length && stack.peek() == popV[j]) { stack.pop(); j++; } } return stack.empty(); } }