carloscn / carloscn/structstudy

leetcode401:二进制手表(binary-watch)

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Description

### 问题描述

二进制手表顶部有 4 个 LED 代表 小时(0-11),底部的 6 个 LED 代表 分钟(0-59)。每个 LED 代表一个 0 或 1,最低位在右侧。

例如,下面的二进制手表读取 "3:25" 。

![image](https://user-images.githubusercontent.com/16836611/208788810-81f8f375-e7f9-42bb-a0bf-e0c80f0bac7c.png)

给你一个整数 turnedOn ,表示当前亮着的 LED 的数量,返回二进制手表可以表示的所有可能时间。你可以 按任意顺序 返回答案。

小时不会以零开头:

例如,"01:00" 是无效的时间,正确的写法应该是 "1:00" 。

分钟必须由两位数组成,可能会以零开头:

例如,"10:2" 是无效的时间,正确的写法应该是 "10:02" 。
 
示例 1:
输入:turnedOn = 1
输出:["0:01","0:02","0:04","0:08","0:16","0:32","1:00","2:00","4:00","8:00"]

示例 2:
输入:turnedOn = 9
输出:[]

来源:力扣(LeetCode)
链接:https://leetcode.cn/problems/binary-watch

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