Solution (leetcode-in-java 1.23 API)

java.lang.Object
- g0401_0500.s0405_convert_a_number_to_hexadecimal.Solution

```
public class Solution
extends Object
```
405 - Convert a Number to Hexadecimal.
Easy

Given an integer num, return a string representing its hexadecimal representation. For negative integers, two\u2019s complement method is used.

All the letters in the answer string should be lowercase characters, and there should not be any leading zeros in the answer except for the zero itself.

Note: You are not allowed to use any built-in library method to directly solve this problem.

Example 1:

Input: num = 26

Output: “1a”

Example 2:

Input: num = -1

Output: “ffffffff”

Constraints:
- -2³¹ <= num <= 2³¹ - 1

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Solution()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  String toHex(int num)
  - 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
- toHex
```
public String toHex(int num)
```