标签：ber method put targe single system turn blank lib
405. Convert a Number to Hexadecimal
Given an integer, write an algorithm to convert it to hexadecimal. For negative integer, two’s complement method is used.
Note:
a-f) must be in lowercase.0s. If the number is zero, it is represented by a single zero character ‘0‘; otherwise, the first character in the hexadecimal string will not be the zero character.
Example 1:
Input: 26 Output: "1a"
Example 2:
Input: -1 Output: "ffffffff"
package leetcode.easy;
public class ConvertANumberToHexadecimal {
char[] map = { ‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘, ‘7‘, ‘8‘, ‘9‘, ‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘e‘, ‘f‘ };
@org.junit.Test
public void test() {
System.out.println(toHex(26));
System.out.println(toHex(-1));
}
public String toHex(int num) {
if (num == 0) {
return "0";
}
String result = "";
while (num != 0) {
result = map[(num & 15)] + result;
num = (num >>> 4);
}
return result;
}
}
LeetCode_405. Convert a Number to Hexadecimal
标签：ber method put targe single system turn blank lib
原文地址：https://www.cnblogs.com/denggelin/p/11927709.html
