Java 进制转化
【摘要】 import java.util.Scanner; public class jinzhishu { /** * 十进制转化八进制 */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc=new Scanner(System.in); //i...
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import java.util.Scanner;
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public class jinzhishu {
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/**
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* 十进制转化八进制
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*/
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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Scanner sc=new Scanner(System.in);
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//int n=sc.nextInt();
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String s=sc.next();
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//char a=s.charAt(0);
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System.out.println(Integer.parseInt(s+" "));
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//f(n);
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}
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public static void f(int n){
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int a[]=new int[100];
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int temp,i=0;
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while(n>0){
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temp=n%2;
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a[i++]=temp;
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n/=2;
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}
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for(int j=i-1;j>=0;j--){
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System.out.print(a[j]);
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}
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System.out.println();
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int result=0,l=0;
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for(int k=0;k<i;k++){
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result+=a[k]*(int)Math.pow(2,l++);
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//System.out.println(result);
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}
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System.out.println(result);
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}
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}
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import java.util.Scanner;
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public class shijinzhi {
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/**
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* 进制转换 十--->十六
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*/
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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Scanner sc=new Scanner(System.in);
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int n=sc.nextInt();
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System.out.println(Integer.toHexString(n).toUpperCase());
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//System.out.println(Long.parseLong(n,16));
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}
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}
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import java.util.Scanner;
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//十六-->十进制
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public class jinzhi16_10 {
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public static void main(String[] args) {
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Scanner sc = new Scanner(System.in);
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String str = sc.next();
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String[] strs = new String[str.length()];
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int t = 0;
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int j = strs.length-1;
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long sum = 0;
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for (int i=0;i<=j;i++) {
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switch(str.charAt(i)) {
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case '0':
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t = 0;
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break;
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case '1':
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t = 1;
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break;
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case '2':
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t = 2;
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break;
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case '3':
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t = 3;
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break;
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case '4':
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t = 4;
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break;
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case '5':
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t = 5;
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break;
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case '6':
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t = 6;
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break;
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case '7':
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t = 7;
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break;
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case '8':
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t = 8;
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break;
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case '9':
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t = 9;
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break;
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case 'A':
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t = 10;
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break;
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case 'B':
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t = 11;
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break;
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case 'C':
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t = 12;
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break;
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case 'D':
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t = 13;
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break;
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case 'E':
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t = 14;
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break;
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case 'F':
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t = 15;
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break;
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}
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sum = (long) (Math.pow(16,j-i)*t + sum);
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}
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System.out.println(sum);
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}
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}
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package jichusuanfa;
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public class jinzhizhuanhuan {
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public static void main(String[] args)
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{
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toBin(6);
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toBa(60);
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toHex(60);
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}
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//十进制-->二进制
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public static void toBin(int num)
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{
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System.out.print(num + "的二进制为:");
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trans(num, 1, 1);
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System.out.println();
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}
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//十进制-->八进制
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public static void toBa(int num)
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{
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System.out.print(num + "的八进制为:");
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trans(num, 7, 3);
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System.out.println();
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}
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//十进制-->十六进制
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public static void toHex(int num)
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{
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System.out.print(num + "的十六进制为:");
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trans(num, 15, 4);
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System.out.println();
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}
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public static void trans(int num, int base, int offset)
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{
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if(num == 0)
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{
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System.out.println(0);
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return;
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}
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char [] chs = {'0', '1', '2', '3',
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'4', '5', '6', '7',
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'8', '9', 'A', 'B',
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'C', 'D', 'E', 'F'};
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char [] arr = new char[32];
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int pos = arr.length;
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while(num != 0)
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{
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int temp = num & base;
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arr[--pos] = chs[temp];
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num = num >>> offset;
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}
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for(int x = pos; x < arr.length; x++)
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{
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System.out.print(arr[x]);
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}
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}
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}
文章来源: czhenya.blog.csdn.net，作者：陈言必行，版权归原作者所有，如需转载，请联系作者。
原文链接：czhenya.blog.csdn.net/article/details/77609322
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