Package g0401_0500.s0405_convert_a_number_to_hexadecimal

Class Solution

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

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 Details

Solution

public Solution()

Method Details

toHex

public String toHex(int num)