Posts by Vikram singhal
Author Biographical Info: Optimistic, Elegant , Delegant
Find whether n! is divisible by sum of first n natural integers or not in C++
Given an integer value n. Product of first n natural integers or n! (factorial of n )is denoted by P and the sum of first n consecutive natural integers is denoted by S. If S is .... Read More
Best algorithm to generate all prime numbers up to a given range in C++
In online coding contests, we often come across problems that are related to primality testing. So, why not we should learn about the algorithm, that can generate all possible prim.... Read More
Count of palindromic substrings in a string in C++
Problem statement: Given a string, the task is to count the number of palindromic substrings present in this string. If any 2 substrings are identical but they have different start.... Read More
Set container and it’s important functions in C++ STL
Introduction Set is an associative container present in C++ STL (Standard Template Library) that stores unique objects as keys. Set does not consider duplicate values. In the set, .... Read More
Maximum k-length sequence of divisors of a given integer in C++
It’s a number theory problem and can also be categorized under constructive algorithm problems pre-requisites: Prime-factorization PROBLEM STATEMENT: Given an integer N.Our.... Read More
matrix spiral printing in C++
Problem statement Given a matrix of r rows and c columns, print the matrix in spiral form with C++ program. Example: 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 .... Read More
Ceiling of every element of array on their right side elements in C++
Problem statement Given an array of integers, determine the ceiling (the closest element that is greater than or equal to that element) on the elements present on the right side of.... Read More