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integer-overflow

6 posts

First digit in factorial of a number

Last Updated: 27 January 2023

Given a positive integer n, find the first digit in its factorial.Examples :Input : n = 5Output : 1Factorial of 5 is 120 and firstdigit is 1.Input : 1000Output : 4A simp...read more

Technical Scripter

integer-overflow

Product of first N factorials

Last Updated: 01 March 2023

Given a number N. Find the product of first N factorials modulo 1000000007.Constraints: 1 ≤ N ≤ 1e6Examples:Input : 3Output : 12Explanation: 1! * 2! * 3! = 12 mod (1e9 + 7...read more

Modular Arithmetic

integer-overflow

Find larger of x^y and y^x

Last Updated: 19 December 2022

Given two integer numbers, X and Y. find the larger of X^Y and Y^X or determine if they are equal.Examples:Input : 2 3Output : 3^2We know 3^2 = 9 and 2^3 = 8.Input : 2 4Ou...read more

integer-overflow

Check whether product of 'n' numbers is even or odd

Last Updated: 06 May 2025

Given an array arr[] of size n, the task is to check whether the product of the given n numbers is even or odd. Even product is even, return true, else false.Examples:Inpu...read more

integer-overflow

Check for Integer Overflow

Last Updated: 26 March 2025

Given two integers a and b. The task is to design a function that adds two integers and detects overflow during the addition. If the sum does not cause an overflow, return...read more

integer-overflow

How Do I Detect Unsigned Integer Overflow in C++?

Last Updated: 16 April 2024

In C++, unsigned integer is a datatype that can store only zero and non-negative integer values. According to C++ standard, unsigned integer overflow is defined behavior (...read more

integer-overflow