/*** */
package com.succez.task2;import java.util.Scanner;/*** <p>Copyright: Copyright (c) 2018</p>* <p>succez</p>* @author ZhangJinjin* @createdate 2018年5月3日*/
public class intToHex {/*** 先输入一个整型数字，判断其是否为0，若为0，则其16进制同样为0；* 若number不为0，则对16取余，并转换成16进制相应的字符；* number=number/16,重复过程2、3，用字符数组s依次保存每一位；* 输出的时候逆序输出即可*/public static void main(String[] args) {Scanner sc = new Scanner(System.in);int number = sc.nextInt();int i = 0;char[] S = new char[100];if(number == 0){System.out.print(0);}else{while(number!=0)  {int t=number%16;if(t >=0 && t<10)  {S[i] = (char)(t+'0');i++;}else{S[i] = (char)(t+'A'-10);i++;}number=number/16;} for (int j=i-1;j>=0;j--){  System.out.print(S[j]);}}}
}

/*** */
package com.succez.task2;import java.util.Scanner;/*** <p>Copyright: Copyright (c) 2018</p>* <p>succez</p>* @author ZhangJinjin* @createdate 2018年5月4日*/
public class intToHex_Alter {/*** 这次算法用了StringBuffer效率更好*/public static void main(String[] args) {// TODO Auto-generated method stub
System.out.println("请输入要转换的十进制的数：");Scanner input = new Scanner(System.in);int n = input.nextInt();        System.out.println("转换的十六进制的数为："+intToHex(n));}private static String intToHex(int n) {StringBuffer s = new StringBuffer();String a;char []b = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};while(n != 0){s = s.append(b[n%16]);n = n/16;            }a = s.reverse().toString();return a;}}

/*** */
package com.succez.task2;import java.util.Scanner;/*** <p>Copyright: Copyright (c) 2018</p>* <p>succez</p>* @author ZhangJinjin* @createdate 2018年5月4日*/
public class intToHex_Alter {/*** 这次算法用了StringBuffer效率更好*/public static void main(String[] args) {// TODO Auto-generated method stub
System.out.println("请输入要转换的十进制的数：");Scanner input = new Scanner(System.in);int n = input.nextInt();        System.out.println("转换的十六进制的数为："+intToHex(n));}private static String intToHex(int n) {//StringBuffer s = new StringBuffer();StringBuilder sb = new StringBuilder(8);String a;char []b = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};while(n != 0){sb = sb.append(b[n%16]);n = n/16;            }a = sb.reverse().toString();return a;}}