Get a Hold of the Bits in Your Integers

Sometimes, it is useful to obtain a binary representation of integer, or a character. For example, we might want to represent the character ‘a’ by its binary 01100001, the letter ‘b’ is 01100010, and so on.

We can obtain the individual bits in an integer by anding it with a bitmask that contains a one bit in the position we are fetching and a zero bits in all the other positions.

If the result of the and is zero, then that bit is not set, otherwise the bit is set. To print out all of the bits in a number (or character), we can write a loop to shift the bitmask and perform the anding on each bit.

The following function prints a range of bits in an integer.

     public void printBits(int number, int startBit, int numBits)     {         int bitmask;         bitmask = 0x80000000 >>> startBit;         numBits += startBit;         for(int i=startBit; i < numBits; ++i)         {             if((number & bitmask) == 0)                 System.out.print('0');             else                 System.out.print('1');             bitmask >>>= 1;         }         System.out.println();     } to print out the binary representation of characters from 'a' to 'z', we can write:         for(char ch='a'; ch <= 'z'; ++ch)         {             printBits(ch, 24, 8);         } to print out the binary representation of numbers from 1 to 100, we can write:        for(int i=1; i<101; i++)       {           printBits(i, 24, 8);       } 
Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

technology leadership

Why the World Needs More Technology Leadership

As a fact, technology has touched every single aspect of our lives. And there are some technology giants in today’s world which have been frequently opined to have a strong influence on recent overall technological influence. Moreover, those tech giants have popular technology leaders leading the companies toward achieving greatness.

iOS app development

The Future of iOS App Development: Trends to Watch

When it launched in 2008, the Apple App Store only had 500 apps available. By the first quarter of 2022, the store had about 2.18 million iOS-exclusive apps. Average monthly app releases for the platform reached 34,000 in the first half of 2022, indicating rapid growth in iOS app development.

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job