【Java】7.0 进制转换
2024-10-19 20:46:35
【二进制转十进制】
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.println("Please enter a binary number");
int num = Integer.parseInt(sc.nextLine());
System.out.println("Your number is: " + num);
int position = 0, sum = 0;
while(num > 0)
{
if(num%10 == 1)
{
sum = sum + (int)(Math.pow(2,position));
System.out.println("Sum: " + sum);
}
position++;
num = num / 10;
}
System.out.println("Decimal number: " + sum);
}
【二进制转十六进制】
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
System.out.println("Please enter a binary number to convert to Hex: ");
int numBin = sc.nextInt();
sc.close();
int power = 0, res = 0;
while(numBin > 0)
{
res = res + ((numBin%2)*(int)(Math.pow(2,power))); // extract last digit and add to red
power++; // increase the power
numBin = numBin / 10; // get rid of last digit
}
System.out.println("Num in Decimal is: " + res);
String digits = new String("0123456789ABCDEF");
String number = new String("");
int digit = 0;
while(res > 0)
{
digit = res % 16;
number = digits.charAt(digit) + number;
res = res/16;
}
System.out.println(number);
}
【十进制转十六进制】
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.println("Please enter a decimal number to convert to hex: ");
int num = Integer.parseInt(sc.nextLine());
String digits = new String("0123456789ABCDEF");
String number = new String("");
int position = 0;
while(num > 0)
{
position = num % 16;
number = digits.charAt(position) + number;
num = num / 16;
}
System.out.println("Hex: " + number);
}
【十进制转二进制】
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.println("Please enter a number to convert to binary:");
String number = new String("");
int num = Integer.parseInt(sc.nextLine());
System.out.println("Num: " + num);
while(num > 0)
{
number = num%2 + number;
num = num/2;
}
System.out.println("Binary number: " + number);
}
【十进制转十六进制】
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.println("Please enter a decimal number to convert to hex:");
String number = new String(""); // string to store the hex representation
String digits = new String("0123456789ABCDEF");
int num = Integer.parseInt(sc.nextLine());
int position = 0;
System.out.println("Num: " + num);
while(num > 0)
{
position = num % 16;
number = digits.charAt(position) + number;
num = num/16;
}
System.out.println("Hexadecimal number: " + number);
}
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