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How to convert decimal numbers to binary.

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Write a program to convert decimal numbers to binary.

import java.util.Scanner; 

class star 

public static void main(String arg[])    

{    

    Scanner sc=new Scanner(System.in); 

    System.out.println("Enter a decimal number"); 

    int n=sc.nextInt(); 

    int  bin[]=new int[100]; 

    int i = 0; 

    while(n > 0) 

    { 

    bin[i++] = n%2; 

       n = n/2; 

    } 

   System.out.print("Binary number is : "); 

    for(int j = i-1;j >= 0;j--) 

   { 

       System.out.print(bin[j]); 

   } 

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