（基础十三）十进制转二进制，八进制，十六进制

来源：互联网发布：mac版优酷缓存在哪里编辑：程序博客网时间：2024/06/10 02:55

public class decimalToBin {    public static void main(String[] args) {        toBin(20);        toOctal(20);        toHex(20);    }    //十进制-->二进制    public static void toBin(int num){        trans(num,1,1);    }    //十进制-->八进制    public static void toOctal(int num){        trans(num,7,3);    }    //十进制-->十六进制    public static void toHex(int num){        trans(num,15,4);    }    public static void trans(int num,int base,int offset){        if(num==0)        {            System.out.println(0);            return ;        }        char[] chs = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};        char[] arr = new char[32];        int pos = arr.length;        while(num != 0){            int tmp = num & base;            arr[--pos] = chs[tmp];            num = num >>> offset;        }        for(int i = pos; i < arr.length; i++){            System.out.print(arr[i]);        }        System.out.println();    }}

0 0