g0401_0500.s0405_convert_a_number_to_hexadecimal.Solution Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of leetcode-in-java Show documentation

Java-based LeetCode algorithm problem solutions, regularly updated

There is a newer version: 1.37

package g0401_0500.s0405_convert_a_number_to_hexadecimal;

// #Easy #Math #Bit_Manipulation

public class Solution {
    public String toHex(int num) {
        if (num == 0) {
            return "0";
        }
        StringBuilder sb = new StringBuilder();
        int x;
        while (num != 0) {
            x = num & 0xf;
            if (x < 10) {
                sb.append(x);
            } else {
                sb.append((char) (x + 87));
            }
            num = num >>> 4;
        }
        return sb.reverse().toString();
    }
}