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Articles on Trending Technologies
Technical articles with clear explanations and examples
Find any pair with given GCD and LCM in C++
In this section we will see how to get number of pairs using the given GCD and LCM values. Suppose the GCD and LCM values are 2 and 12. Now the possible pairs of numbers are (2, 12), (4, 6), (6, 4) and (12, 2). So our program will find the count of pairs. That is 4.Let us see the algorithm to understand what will be the technique to solve this problem.AlgorithmcountPairs(gcd, lcm): Begin if lcm is nit divisible by gcd, then return 0 temp := lcm/gcd c := primeFactorCount(temp) res := shift ...
Read MoreThe abs(), labs(), llabs() functions in C/C++
What are Integer Functions in C Library?Integer functions are those functions which returns the exact value of an integer. C only supports integer values. In this function the nearest integer which is less than or equal to the argument returns to this function.Types of Integer functions −int = abs (int n); long = labs (long n); long long = llabs (long long n);where n = integer valueWhat is abs(), labs(), llabs() functions ?They are defined as (C Standard General Utilities Library) header file. They give the exact value of integer that is input to them as their argument.abs() function ...
Read MoreC++ Program to check if tank will overflow, underflow or filled in given time
Given with the rate of filling the tank, height of a tank and radius of a tank and the task is to check whether the tank is overflow, underflow and filled in given time.ExampleInput-: radius = 2, height = 5, rate = 10 Output-: tank overflow Input-: radius = 5, height = 10, rate = 10 Output-: tank undeflowApproach used below is as follows −Input the rate of filling time, height and radius of a tankCalculate the volume of a tank to find the original rate of flow of water.Check for the conditions to determine the resultIf expected < original ...
Read MoreIs it mandatory to use T for type-parameter, while defining Generics classes/methods in Java?
Generics is a concept in Java where you can enable a class, interface and, method, accept all (reference) types as parameters. In other words it is the concept which enables the users to choose the reference type that a method, constructor of a class accepts, dynamically. By defining a class as generic you are making it type-safe i.e. it can act up on any datatype.To define a generic class you need to specify the type parameter you are using in the angle brackets “” after the class name and you can treat this as datatype of the instance variable an ...
Read MoreFind number of substrings of length k whose sum of ASCII value of characters is divisible by k in C++
Here we will see another problem, where one string and another integer value say k is given. We have to find the number of substrings of length k, whose sum of ASCII values of characters is divisible by k.Suppose a string is “BCGABC”. And the value of k is 3. Here string BCG has ASCII sum 300, ABC has ASCII sum 294, both are divisible by k = 3.The approach is simple. At first we have to find the ASCII value of characters of first substring, whose length is k. We have to use the sliding window technique and subtract ...
Read MoreC++ Program for sum of arithmetic series
Given with ‘a’(first term), ‘d’(common difference) and ‘n’ (number of values in a string) and the task is to generate the series and thereby calculating their sum.What is an Arithmetic seriesArithmetic series is the sequence of numbers with common difference where the first term of a series is fixed which is ‘a’ and the common difference between them is ‘d’.It is represented as −a, a + d, a + 2d, a + 3d, . . .ExampleInput-: a = 1.5, d = 0.5, n=10 Output-: sum of series A.P is : 37.5 Input : a = 2.5, d = 1.5, n ...
Read MoreWhat is need of introducing Generics, when Arrays already present in Java?
Arrays in Java are used to store homogeneous datatypes, where generics allow users to dynamically choose the type (class) that a method, constructor of a class accepts, dynamically.By defining a class generic you are making it type-safe i.e. it can act up on any datatype. To understand generics let us consider an example −Exampleclass Student{ T age; Student(T age){ this.age = age; } public void display() { System.out.println("Value of age: "+this.age); } } public class GenericsExample { public static void main(String args[]) { Student std1 ...
Read MoreFind One's Complement of an Integer in C++
In this section, we will see how to find the 1’s complete of an integer. We can use the complement operator to do this task very fast, but it will make 32bit complemented value (4-bype integer). Here we want complement of n bit numbers.Suppose we have a number say 22. The binary equivalent is 10110. The complemented value is 01001 which is same as 9. Now the question comes, how to find this value? At first we have to find number of bits of the given number. Suppose the count is c (here c = 5 for 22). We have ...
Read MoreCan we have generic constructors in Java?
Generics is a concept in Java where you can enable a class, interface and, method, accept all (reference) types as parameters. In other words it is the concept which enables the users to choose the reference type that a method, constructor of a class accepts, dynamically. By defining a class as generic you are making it type-safe i.e. it can act up on any datatype.To define a generic class you need to specify the type parameter you are using in the angle brackets “” after the class name and you can treat this as datatype of the instance variable an ...
Read MoreA Product Array Puzzle in C++?
Here we will see one interesting problem related to array. There is an array with n elements. We have to create another array of n elements. But the i-th position of second array will hold the product of all elements of the first array except the i-th element. And one constraint is that we cannot use the division operator in this problem.If we can use the division, operation, we can easily solve this problem, by getting the product of all elements, then divide i-th element of first array and store it into i-th place of the second array.Here we are ...
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