How to use Bitwise Operators In Java

3. Using Math.pow() method (Without using Arrays)

We can use bitwise operators to do the above job.

Note – Bitwise operators work faster than arithmetic operators used above.

Java Program to Convert Decimal Number to Binary Using Bitwise Operators

Java

// Java program to Decimal to binary conversion 
// using bitwise operator 
// Size of an integer is assumed to be 32 bits 
  
class gfg { 
    // Function that convert Decimal to binary 
    public void decToBinary(int n) 
    { 
        // Size of an integer is assumed to be 32 bits 
        for (int i = 31; i >= 0; i--) { 
            int k = n >> i; 
            if ((k & 1) > 0) 
                System.out.print("1"); 
            else
                System.out.print("0"); 
        } 
    } 
} 
  
class geek { 
    // driver code 
    public static void main(String[] args) 
    { 
        gfg g = new gfg(); 
        int n = 32; 
          System.out.println("Decimal - " + n); 
         System.out.print("Binary - "); 
        g.decToBinary(n); 
    } 
}

Output

Decimal - 32
Binary - 00000000000000000000000000100000

The complexity of the above method:

Time Complexity: O(1)
Auxiliary Space: O(1)

Java Program for Decimal to Binary Conversion

Given a decimal number as input, we need to write a program to convert the given decimal number into an equivalent binary number.

Examples:

Input : 7
Output : 111

Input: 33
Output: 100001

Binary-to-decimal conversion is done to convert a number given in the binary system to its equivalent in the decimal number system. A number system is a format to represent numbers in a certain way.

Binary Number System – The binary number system is used in computers and electronic systems to represent data, and it consists of only two digits which are 0 and 1.

Decimal Number System – The decimal number system is the most commonly used number system worldwide, which is easily understandable to people. It consists of digits from 0 to 9.

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#java-math #Java #Java Programs #Java

1. Using Arrays