Convert int to hex string need a better way

Question

I am doing a method that can convert a int number to hexadecimal string. Basically my code is work for all test, but I am still looking for an efficient way to get rid of the array part. Anyone would give me a hand? the better way for not using array, but rather use a string type would be more efficient, and the answer is very clear as above. So i just delete my original code

Answer 1

Integer.toHexString(int);

应该是你要找的

Answer 2

String digits = "0123456789ABCDEF";

output = digits.charAt(remain) + output;

I hope there are no convertion problems.

Answer 3

我认为Integer.toHexString（int）是解决问题的最佳方法