说明 LeetCode提供的样本输入,显示上是数组Array,而后台的实际测试用例则是树TreeNode,链表ListNode等. 如果你是在页面手撸代码直接提交的,那没什么影响. 如果你是在本地IDE编写的代码,你就需要把样本输入拷贝下来,转换成相应的数据类型,再编写核心算法进行测试. 我们只需要提交核心算法,不需要提交测试数据初始化代码. 本文记录公用的初始化代码,不占其他随笔篇幅. ListNode function ListNode(val) { this.val = val; this…

 1.选择器 (1)通配符: $("input[id^='code']");//id属性以code开始的所有input标签 $("input[id$='code']");//id属性以code结束的所有input标签 $("input[id*='code']");//id属性包含code的所有input标签 (2)根据索引选择 $("tbody tr:even"); //选择索引为偶数的所有tr标签 $("tbody…

International Morse Code defines a standard encoding where each letter is mapped to a series of dots and dashes, as follows: "a" maps to ".-", "b" maps to "-...", "c" maps to "-.-.", and so on. F…

The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0. Ex…

Gray Code The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin…

The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0. Fo…

adb shell input keyevent 7 # for key '0' adb shell input keyevent 8 # for key '1' adb shell input keyevent 29 # for key 'A' adb shell input keyevent 54 # for key 'B' adb shell input text "ANDROID" ------------------------------------------------…

The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0. Fo…

题目:格雷码. 格雷码是从0开始且之后两个相邻码之间只有一个符号不相同,例如000,100,101,111三个相邻之间只有一个二进制不同. 现在给定一个数字n,然后给出格雷码所对应的数字.例如: For example, given n = 2, return [0,1,3,2]. Its gray code sequence is: 00 - 0 01 - 1 11 - 3 10 - 2 左边一列是格雷码,右边一列是对应的需要输出的十进制. 我们来观察一下格雷码的规律.如果是1那么是 0 1…

原题地址:https://leetcode.com/problems/gray-code/ class Solution { public: vector<int> grayCode(int n) { vector<int> coll; || n == ) { coll.push_back(); if(n) coll.push_back(); return coll; } coll = (grayCode(n - )); ; ; --i) coll.push_back(pow()…