PW_Java_Assignment/NumberSystem at main · pratiksutar841/PW_Java_Assignment · GitHub

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Q1 - Convert a decimal number into binary
  input = 56
  output = 111000

import java.util.Scanner;
public class Test
{
  public static void main(String[] args)
  {
  Scanner scn = new Scanner(System.in);
  System.out.println(“Enter the decimal number: ”);
   int n = scn.nextInt();
   int binarynum = 0;
   int power = 1;
       while(n != 0)
       {
       int rem = n % 2;
       binarynum += rem * power;
       power *= 10;
       n /= 2;
       }
       System.out.print(binarynum);
  }
}


Q2 - Convert a binary number to decimal
ip = 10100011

op = 163

import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner scn = new Scanner(System.in);
System.out.println(“Enter the binary number: ”);
int n = scn.nextInt();
int decimalnum = 0;
int power = 1;
while(n != 0){
int rem = n % 2;
decimalnum += rem * power;
power *= 2;
n /= 10;
}
System.out.print(decimalnum);
}
}


Q3 - Add two numbers given in different base

import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner scn = new Scanner(System.in);
System.out.println(“Enter the decimal number: ”);
int m = scn.nextInt();
System.out.println(“Enter the binary number: ”);
int n = scn.nextInt();
int decimalnum = 0;
int power = 1;
while(n != 0){
int rem = n % 2;
decimalnum += rem * power;
power *= 2;
n /= 10;
}
System.out.print(m+decimalnum);
}
}


Q4 - Multiply two numbers given in different base

import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner scn = new Scanner(System.in);
System.out.println(“Enter the decimal number: ”);
int m = scn.nextInt();
System.out.println(“Enter the binary number: ”);
int n = scn.nextInt();
int decimalnum = 0;
int power = 1;
while(n != 0){
int rem = n % 2;
decimalnum += rem * power;
power *= 2;
n /= 10;
}
System.out.print(m*decimalnum);
}
}


Q5 - Convert a decimal double number into binary string for upto k precision digits

import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner scn = new Scanner(System.in);
System.out.println(“Enter the decimal double number: ”);
double n = scn.nextDouble();
System.out.println(“Enter the number of precision digits: ”);
int k = scn.nextInt();
int decimal_n = (int)n;
double fractional_n = n - decimal_n;
int decimal_binary = 0;
int power = 1;
while(decimal_n != 0) {
int rem = decimal_n % 2;
decimal_binary += rem * power;
power *= 10;
decimal_n /= 2;
}
String s = Integer.toString(decimal_binary) + ".";
while(k > 0 && fractional_n != 0){
fractional_n *= 2;
int digit = (int)fractional_n;
s += digit;
fractional_n = fractional_n - digit;
k--;
}
System.out.print(s);
}
}