Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Number System represents value of number with respect to its given base. Based on its Base value, a number has unique representation and different number systems have different representation of the same number. For example, Binary, Octal, Decimal and Hexadecimal Number systems are used in microprocessor programming.If the Base value of a number system is 10, then it is called Decimal number system which has most important role in the development of science and technology. This is the weighted (or positional) number representation, where value of each digit is determined by its position (or their weight) in a number. This ... Read More
Octal Number System is one the type of Number Representation techniques, in which there value of base is 8. That means there are only 8 symbols or possible digit values, there are 0, 1, 2, 3, 4, 5, 6, 7. It requires only 3 bits to represent value of any digit. Octal numbers are indicated by the addition of either an 0o prefix or an 8 suffix.Position of every digit has a weight which is a power of 8. Each position in the Octal system is 8 times more significant than the previous position, that means numeric value of an ... Read More
The valueOf() method is used in Java to convert char array to string.Here is our char array.// char array char[] c = {'p','q','r','s','t','u','v'};To convert it to string, use the valueOf() method.String str = String.valueOf(c);Example Live Demopublic class Demo { public static void main(String[] args) { // char array char[] c = {'p','q','r','s','t','u','v'}; // converting to string String str = String.valueOf(c); System.out.println("String: "+str); } }OutputString: pqrstuv
For converting a primitive type value to a string in Java, use the valueOf() method.Let’s say we want to convert the following double primitive to string.double val4 = 8.34D;For that, use the valueOf() method. It converts it into a string.String str4 = String.valueOf(val4);Example Live Demopublic class Demo { public static void main(String[] args) { int val1 = 5; char val2 = 'z'; float val3 = 9.56F; double val4 = 8.34D; System.out.println("Integer: "+val1); System.out.println("Character: "+val2); System.out.println("Float: "+val3); ... Read More
Matrix multiplication leads to a new matrix by multiplying 2 matrices. But this is only possible if the columns of the first matrix are equal to the rows of the second matrix. An example of matrix multiplication with square matrices is given as follows.Example Live Demopublic class Example { public static void main(String args[]) { int n = 3; int[][] a = { {5, 2, 3}, {2, 6, 3}, {6, 9, 1} }; int[][] b = { {2, 7, 5}, {1, 4, 3}, {1, 2, 1} }; int[][] ... Read More
Hexadecimal Number System is one the type of Number Representation techniques, in which there value of base is 16. That means there are only 16 symbols or possible digit values, there are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. Where A, B, C, D, E and F are single bit representations of decimal value 10, 11, 12, 13, 14 and 15 respectively. It requires only 4 bits to represent value of any digit. Hexadecimal numbers are indicated by the addition of either an 0x prefix or an h suffix.Position of every ... Read More
The bzip2 is an open source algorithm for compression and decompression of files. Python’s bz2 module provides functionality to implement bzip2 algorithm programmatically.The open() function is the primary interface to this module.Open()This function opens a bzip2 compressed file and returns a file object. The file can be opened as binary/text mode with read/write permission. The function performs compression based on compressionlevel argument between 1 to 9.write()When the file is opened in ‘w’ or ‘wb’ mode, this function is available to the file object. In binary mode, it writes compressed binary data to the file. In normal text mode, the file ... Read More
Java provides the Date class available in java.util package, this class encapsulates the current date and time. The time functions can be accessed from the java.util.Date class. This represents an instance of time with millisecond precision.One of the time function in Java is the getTime() function. It returns the number of milliseconds that have passed since January 1, 1970, 00:00:00 GMT. A program that demonstrates this is given as follows −Example Live Demoimport java.util.*; public class Example { public static void main(String[] args) { Date d = new Date(95, 7, 15); long num = ... Read More
The dequeue is a double ended queue and data elements can be added or removed from either end. The dequeue in Java is implemented using the java.util.Deque interface which is a subtype of the java.util.Queue interface.A program that demonstrates some of the methods of a dequeue is given as follows −Example Live Demoimport java.util.*; public class Example { public static void main(String[] args) { Deque d = new LinkedList(); d.add("5"); d.addFirst("1"); d.addLast("9"); d.push("7"); d.offer("8"); d.offerFirst("6"); d.offerLast("2"); ... Read More
Binary Number System is one the type of Number Representation techniques. It is most popular and used in digital systems. Binary system is used for representing binary quantities which can be represented by any device that has only two operating states or possible conditions. For example, a switch has only two states: open or close.In the Binary System, there are only two symbols or possible digit values, i.e., 0 and 1. Represented by any device that only 2 operating states or possible conditions. Binary numbers are indicated by the addition of either an 0b prefix or an 2 suffix.Position of ... Read More