When MySQL SUM() function got a column, having no values, an argument then it will return NULL, rather than 0, as output. But if we want to customize this output to show 0 as output then we can use MySQL COALESCE() function which accepts two arguments and returns the second ... Read More

MySQL returns 0 as output if the number given in CONV() function is not as per accordance with its base. Suppose, if we want to convert decimal number 9 into the number in binary number system then in this case the value of from_base must be 10 but if we ... Read More

When CHAR_LENGTH() or CHARACTER_LENGTH() string function is used with WHERE clause, the output returns by it will depend upon the condition given in WHERE clause. For example, suppose we have a table named ‘Student’ and we want to get only those names having number of characters less than 6, then ... Read More

Page redirection is a situation where you clicked a URL to reach a page X but internally you were directed to another page Y. It happens due to page redirection.To use a META Tag to redirect your site is quite easy. With this, use the http-equiv attribute to provide an ... Read More

To call a parent window function, use “window.top”.ExampleYou can try to run the following code to call a parent window function from an iframeLive Demo                    function display(){             alert("Hello World!");          }                      Click          

To add a number of months to a date, first get the month using getMonth() method and add a number of months.ExampleYou can try to run the following code to add a number of monthsLive Demo                    var d, e; ... Read More

A Hamiltonian cycle is a Hamiltonian Path such that there is an edge (in graph) from the last vertex to the first vertex of the Hamiltonian Path. It is in an undirected graph is a path that visits each vertex of the graph exactly once.Functions and purposes:Begin    1.function isSafe() ... Read More

This is C++ Program to Generate All Subsets of a Given Set in the Lexico Graphic Order. This algorithm prints all the possible combination of each length from the given set of array in increasing order. The time complexity of this algorithm is O(n*(2^n)).AlgorithmBegin    For each length ‘i’ GenAllSubset() ... Read More

In this program, we will perform Edge Coloring of a Graph in which we have to color the edges of the graph that no two adjacent edges have the same color. Steps in Example.AlgorithmBegin    Take the input of the number of vertices, n, and then number of edges, e, ... Read More

When you compile Java programs using javac compiler it generates bytecode. We need to execute this bytecode using JVM (Java Virtual machine) Then, JVM translates the Java bytecode to machine understandable code. You can download JVM's (comes along with JDK or JRE) suitable to your operating system and, once you ... Read More