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 java.lang.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
    java.lang.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 java.lang.String toHex(int num)