# Category Archives: Algorithms

## Apocalyptic Number

Given a number N, the task is to check if N is an Apocalyptic Number or not. If N is an Apocalyptic Number then print… Read More »

## Alternating Numbers

Given a number N, the task is to check if N is an Alternating Number or not. If N is an Alternating Number then print… Read More »

## Central polygonal numbers

Given a number N, the task is to write a program to find the N-th term of the Central polygonal numbers series:   1, 1, 3,… Read More »

## Droll Numbers

Given a number N, the task is to check if N is an Droll Number or not. If N is an Droll Number then print… Read More »

## Duffinian Numbers

Given a number N, the task is to check if N is an Duffinian Number or not. If N is an Duffinian Number then print… Read More »

## Ormiston prime Pairs

Given two integer N1 and N2, the task is to check if both the pairs are ormiston prime.  Ormiston prime is those numbers that are… Read More »

## Anti-perfect Number

Given a number N, the task is to check if N is an Anti-perfectNumber or not. If N is an Anti-perfectNumber then print “Yes” else… Read More »

## Decakismyriagon Number

Given a number N, the task is to find Nth Decakismyriagon Number. A Decakismyriagon Number is a class of figurate numbers. It has a 100000-sided… Read More »

## Untouchable Number

Given a number N, the task is to check if N is an Untouchable Number or not. If N is an Untouchable Number then print… Read More »

## Zygodrome Number

Given an integer N, the task is to check if N is an zygodrome Number. Zygodrome Number is a numbers if it is made of… Read More »

## Loeschian Number

Given a number N, the task is to check if N is an Loeschian Number or not. If N is an Loeschian Number then print… Read More »

Given an integer N, the task is to check if N is an Admirable Number. An admirable number is a number, if there exists a… Read More »

## Sastry Numbers

Given an integer N, the task is to check N is a Sastry number.  A number N is a Sastry Number if N concatenated with… Read More »

## Program to print the series 2, 15, 41, 80, 132, 197… till N terms

Given a number N, the task is to print the first N terms of the following series:  2 15 41 80 132 197 275 366… Read More »

## Program to print the series 1, 3, 4, 8, 15, 27, 50… till N terms

Given a number N, the task is to print the first N terms of the following series: 1, 3, 4, 8, 15, 27, 50… Examples:… Read More »