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Articles on Trending Technologies
Technical articles with clear explanations and examples
C Program for nth Catalan Number
Given an interger n; the task is to find the Catalan Number on that nth position. So, before doing the program we must know what is a Catalan Number?Catlan numbers are the sequence of natural numbers, which occurs in the form of various counting number problems.Catalan numbers C0, C1, C2, … Cn are driven by formula −$$c_{n}=\frac{1}{n+1}\binom{2n}{n} = \frac{2n!}{(n+1)!n!}$$The few Catalan numbers for every n = 0, 1, 2, 3, … are 1, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, …So if we entered n =3 we should get 5 as an output from the programSome of few ...
Read MoreC Program that receives a number and prints it out in large size
Given a number n in form of a string; the task is to print that following number in large using hash symbols.Like we have provided a number “1234”The representation of the following number should be −Likewise we want our solution to be printed −ExampleInput: n[] = {“2234”} Output:Input: n[] = {“987”} Output:Approach we will be using to solve the given problem −Take at most 4 digit number a input in a string.Make arrays of every number one by one the large pattern we want for the number.Traverse the string and print every number one by one.AlgorithmStart Step 1 -> ...
Read MoreC Program to check if a number belongs to a particular base or not
Given a number as a string and a base; the task is to check whether the given number of is of that given base or not.We have to check the number and the base according to the number system in which there are bases like 2 for a binary number, 8 for an octal number, 10 for decimal number and 16 for a Hexadecimal number. According to this we have to find whether the given number in a string belongs to a particular base or not, If it belongs to a particular base then we have to print “Yes” on ...
Read MoreC Program for N-th term of Arithmetic Progression series
Given ‘a’ the First term, ‘d’ the common difference and ‘n’ for the number of terms in a series. The task is to find the nth term of the series.So, before discussing how to write a program for the problem first we should know what is Arithmetic Progression.Arithmetic progression or arithmetic sequence is a sequence of number where the difference between the two consecutive terms is same.Like we have first term i.e a =5, difference 1 and nth term we want to find should be 3. So, the series would be: 5, 6, 7 so the output must be 7.So, ...
Read MoreC Program to calculate the Round Trip Time (RTT)
Given an Url address of any website; the task is to calculate the round trip time of a website.Round Trip Time(RTT) is the total time or the length of a time which is taken to send a signal plus the time taken to receive the acknowledgement of that signal to be received. This time also consist of the propagation times between two points of a signal.An end user can determine his/her round trip time from an IP address by pinging that address.The Round Trip time’ result depends upon the following reasons −The Transmission medium.The presence of Interface in the circuit.Number ...
Read MoreC Program to Change RGB color model to HSV color model
Given RGB color range in form of integers; the task is to find its appropriate HSV color by converting the RGB color rangeWhat is RGB color modelRGB color model comprised of three colors Red, Green and Blue. RGB model is a color model which is widely used in the display technologies; it is an additive model in which we add these three colors of with different intensities to produce millions of different colors on a display device.What is HSV color model?HSV color model comprises Hue, Saturation, Value also known as HSB (Hue, Saturation, Brightness).HSV is alternative representation of RGB color ...
Read MoreC Program to convert a given number to words
Given a string consisting of numerical values, the task is to covert those given numbers in words.Like we have an input “361”; then the output should be in words i.e, ” Three hundred sixty one”. For the solution of the following problem we have to keep in mind the numbers and places it is in on like ones, tens, thousands etc.The code only support upto 4 digits numbers i.e., 0 to 9999. So the input should be from 0 to 9999.Let us consider 1, 111 so the places will be like −ExampleInput: “1234” Output: one thousand two hundred thirty four ...
Read MorePrinting all subsets of {1,2,3,…n} without using array or loop in C program
Given a positive integer n we have to print all the subsets of a set of {1, 2, 3, 4, … n} without using any array or loops.Like we have given any number say 3 s we have to print all the subset in the set {1, 2, 3} which would be {1 2 3}, {1 2}, {2 3}, {1 3}, {1}, {2}, {3} { }.But we have to do this without using any loop or an array. So, only the recursion is the possible way to solve this type of problem without using any array or a loop.ExampleInput: 3 ...
Read MoreWhat is difference between matches() and find() in Java Regex?
The java.util.regex.Matcher class represents an engine that performs various match operations. There is no constructor for this class, you can create/obtain an object of this class using the matches() method of the class java.util.regex.Pattern.Both matches() and find() methods of the Matcher class tries to find the match according to the regular expression in the input string. In case of a match, both returns true and if a match is not found both methods return false.The main difference is that the matches() method try to match the entire region of the given input i.e. if you are trying to search for ...
Read MorePattern asPredicate() method in Java with examples
The Predicate interface of the java.util.function package can be used as a target for lambda expressions. The test method of this interface accepts a value ad validates it with the current value of the Predicate object. This method returns true in-case of a match, else false.The asPredicate() method of the java.util.regex.Pattern class returns a Predicate object which can match a string with the regular expression using which the current Pattern object was compiled.Example 1import java.util.Scanner; import java.util.function.Predicate; import java.util.regex.Pattern; public class AsPredicateExample { public static void main( String args[] ) { //Reading string value ...
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