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Server Side Programming Articles
Page 1657 of 2109
Perfect Power (1, 4, 8, 9, 16, 25, 27, ...)
A Perfect Power is a Natural Number that is the product of equal natural factors. It can also be defined as an integer that can be expressed as a square power or a higher power of another integer greater than one. For example, 4 can be expressed as the product of 2*2. 27 can be expressed as the product of 3*3*3. Hence, 4 and 27 are perfect powers. Problem Statement Given a number n, find the count of perfect numbers which are less than or equal to n. Example 1 Input = 14 Output = 3 Explanation 1 ...
Read MoreLegendre's Conjecture: Concept, Algorithm, Implementation in C++
The Legendre’s Conjecture states that at least one prime number always exists between two consecutive natural numbers' squares. Mathematically, there is always a prime number p between any two numbers n2 and (n+1)2. n is a natural number. A conjecture means a conclusion that doesn't has mathematical proof. Hence, Legendre's Conjecture is just a statement with no mathematical proof. Problem Statement For a number n, print the number of primes in the range of n2 to (n+1)2 from 1 to n. Examples Input: 4 Output: For i = 1: Total primes in the range 1 and 4 = 2 ...
Read MoreForm a Number Using Corner Digits of Powers
What are Corner digits? The corner digits of a number refer to the rightmost and the leftmost digits. For example, the corner digits of 1234 are 1 and 4. The corner digits of a single-digit number will be the number twice. For example, the corner digits of 2 will be 2 and 2. Problem Statement For given two numbers, n, and x, form a number using the corner digits of all the powers of n from 1 and x, i.e., n1, n2....nx. Examples Input: n = 2, x = 4 Output: 22448816 Explanation 21 = 2. Corner digits = ...
Read MoreDecimal Equivalent of Gray Code and Its Inverse
Gray code or reflected binary code is a form of a binary representation of numbers in which two consecutive numbers only differ by one bit. For example, the gray code of 1 is 001, while the gray code of 2 is 011. Gray code is usually used in error correction because it prevents some data errors that can happen in the usual binary representations while state changes. Gray code is also helpful in k-maps, communication, etc., because of its unique property. Prerequisite Study decimal, binary and gray code notations before reading further. Problem Statement 1 Given a decimal number n, ...
Read MoreCube Free Numbers smaller than n
Cube-free numbers are those numbers that have no cubic divisors. A cubic divisor refers to an integer that is a cube and divides the number with zero remainders. For example, 8 is a cubic divisor of 16 since 8 is a cube of 2 (2*2*2 = 8), and 8 divides 16 with the remainder of zero. Thus, 8 and 16 both are not cube-free numbers. Problem Statement Find all the cube-free numbers less than a given number, n. Example Let's understand the problem with an example. Let n = 15, Thus, we have to find all the numbers less than ...
Read MoreSquare pyramidal number (Sum of Squares)
A Square Pyramidal Number means the Sum of the Square of Natural Numbers. Natural Numbers include all the numbers from 1 to infinity. For example, the first 4 Square pyramidal numbers are 1, 5, 14, 30. For better perception, consider the fact: If we take spheres of numbers equal to the square pyramidal numbers, starting from one, and stack them in descending order, they create a pyramid. Problem Statement Given a number Sum. If Sum is the sum of the squares of first “n” natural numbers, return n, otherwise return false. Example 1 Input = 30 Output = 4 ...
Read MoreHaskell Program to calculate the value from the given fraction and exponent
This haskell tutorial will help us in calculating the value from the given fraction and exponent of a number. To find this, the input is taken as fraction and exponent, and its corresponding value is computed. Algorithm Step 1 − The “Data.Ratio” is imported to work over fractions. Step 2 − The calculateValue function is defined Step 3 − Program execution will be started from main function. The main() function has whole control of the program. It is written as main = do. Step 4 − The variables named, “fraction” and “exponent” are initialized. ...
Read MoreGolang program to include a module inside the class
In Go programming language, a new module is initiated using init command after which we can import other modules in our code. There is no concept of class in Go, only structs are used. In this article, we will use one example to include a module inside the class. In this example, we will create a Circle struct whose area will be printed on the console. For this example, we will import math and fmt packages outside the struct but they can be used anywhere. The print statement is executed using Printf function from the fmt package. Algorithm Import ...
Read MoreGolang program to create a block using curly braces
We can create a block in golang using curly braces and then create a variable inside the block to have the scope only inside the block and not outside it. In this article, we will use three examples to create a block using curly braces. In the first example few statements will be printed inside and outside the block, in the second example comparison value will be printed inside the block and in the third example function will be used to demonstrate the use of block. Algorithm Import the required packages in the program Create a main function In ...
Read MoreGolang program to convert the hash collection into string
Golang has json package that is used for converting the hask collection into strin. A hashmap belongs to hash collection which stores the data as key:value pairs, whereas a string is a sequence of characters and it is immutable. In this article, we will use two examples to convert the hash collection into string. In the first example, the Json package will be used to convert the map to encoded byte array whereas in the second example sort package will be use along the loops. Syntax json.Marshal() This function belongs to the JSON package and it converts the value ...
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