Solution (leetcode-in-java 1.19 API)

java.lang.Object
- g0401_0500.s0401_binary_watch.Solution

```
public class Solution
extends Object
```
401 - Binary Watch.
Easy

A binary watch has 4 LEDs on the top which represent the hours (0-11), and the 6 LEDs on the bottom represent the minutes (0-59). Each LED represents a zero or one, with the least significant bit on the right.
- For example, the below binary watch reads "4:51".
Given an integer turnedOn which represents the number of LEDs that are currently on, return all possible times the watch could represent. You may return the answer in any order.

The hour must not contain a leading zero.
- For example, "01:00" is not valid. It should be "1:00".
The minute must be consist of two digits and may contain a leading zero.
- For example, "10:2" is not valid. It should be "10:02".
Example 1:

Input: turnedOn = 1

Output: [“0:01”,“0:02”,“0:04”,“0:08”,“0:16”,“0:32”,“1:00”,“2:00”,“4:00”,“8:00”]

Example 2:

Input: turnedOn = 9

Output: []

Constraints:
- 0 <= turnedOn <= 10

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Solution()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  List<String> readBinaryWatch(int turnedOn)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- Solution
```
public Solution()
```

Method Detail

readBinaryWatch

public List<String> readBinaryWatch(int turnedOn)