Dcwjh的博客

1. JDK:Stack() 数组实现栈 public static class ArrayStack { private Integer[] arr; private Integer size; public ArrayStack(int initSize) { if (initSize < 0) { throw new IllegalArgumentE...

遍历 实现二叉树的先序、中序、后序遍历 递归： //根左右 public static void preOrder(Node head){ if(head == null) return; System.out.println(head.data); preOrder(head.left); preOr...