Check if a number is a perfect square
Given a positive number, check if it is a perfect square without using any built-in library function. A perfect square is a number that is the square of an integer.
Category: Programming Puzzles
Compute modulus division without division and modulo operator
Compute modulus division of a positive number n by another positive number d which is a power of 2 without using division or modulo operator.
Solve a given set of problems without using multiplication or division operators
This post will discuss a few related problems that can be solved without using multiplication and division operators.
Generate random input from an array according to given probabilities
Write an algorithm to generate any one of the given n numbers according to given probabilities.
Find minimum or maximum of two integers without using branching
Given two integers, find their minimum and maximum without using branching.
Find maximum number without using conditional statement or ternary operator
Given two numbers, calculate the maximum number without using a conditional statement or ternary operator.
Single line expressions to swap two integers in Java
Given two integers, swap them in a single line in Java.
Write a C/C++ program without using the main function
Write a C/C++ program without using the main() function. We are allowed to change the entry point of the program from main() to any other function or remove the main() function altogether.
Get 0 and 1 with equal probability using a specified function
Write an algorithm to get 0 and 1 with equal probability using a function that generates random numbers from 1 to 5 with equal probability.
Determine if two integers are equal without using comparison and arithmetic operators
This post will discuss how to determine whether two integers are equal without using comparison operators (==, !=, <, >, <=, >=) and arithmetic operators (+, -, *, /, %).
Implement ternary operator without using conditional expressions
This post will implement a ternary-like operator in C without using conditional expressions like ternary operator, if–else expression, or switch-case statements.
Generate numbers from 1 to 7 with equal probability using a specified function
Write an algorithm to generate numbers from 1 to 7 with equal probability using a specified function that produces random numbers between 1 and 5.