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’s 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 and Description
Solution()

Method Summary

Modifier and Type	Method and 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)