Understanding Direct Addressing and Hashing: An In-DepthGuide A key stage in the hashing process and a fundamental idea in computer science and data structures is direct addressing. Direct addressing will bethoroughly explained in this article, along with how it functions and how to useit in code. What is Direct Addressing? An IP address can be transformed into a 32-bit integer number using the direct addressing technique. With the help of this conversion, a 232-dimensionalarray with indexes 0 through 232-1 can be produced. Each IP address will mapto a distinct spot in this array, making it simple to access and manipulate data. How to Convert IP Addresses to Integers An IP address is made up of four integer integers, each of which has a maximum value of 255 and corresponds to 8 bits or 1 byte of the IP address'stotal size, which is 4 bytes or 32 bits. The 8 bits for the first number are joinedwith the 8 bits for the second number, third number, and fourth number to createan integer number from an IP address. This yields a string of 32 bytes, whichmay subsequently be expressed as a 32-bit integer number and translated todecimal form. Since all of the upper bits are zeroes and just the lowest bit, which corresponds to the number 1, is set, the IP address 0.0.0.1, for instance, wouldbe converted to the integer number 1. The following formula and code can be used to convert an IP address to an integer number:
Implementing Direct Addressing using Array A The IP addresses can be used to access and modify data contained in array A once they have been translated to integers. This array will be exactly232 bytes in size and have indexes from 0 to 232-1. The entry in array A at thatindex is increased or decreased in accordance when a counter associated with anIP in the code is incremented or decremented. The IP is first transformed to aninteger value. Direct addressing is a crucial step in the process of hashing and provides a convenient method for converting IP addresses into integer numbers. By usingthis conversion, data can be easily accessed and manipulated using an array of size . Understanding direct addressing is essential for anyone looking to 2 32 delve deeper into the world of computer science and data structures.