Algorithms to Check if Integer is a Power of Three
Question: Given an integer, write a function to determine if it is a power of three. Iterative If you divide the number (which is Power of Three) iteratively by …
Category: math
C++ Range Sum Query on Immutable Array via Prefix Sum
Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Given nums = sumRange(0, 2): 1 sumRange(2, 5): …
C++ Coding Exercise – Parallel For – Monte Carlo PI Calculation
November 11, 2015
c / c++, math, monte carlo, Monte Carlo Simulation, Monte Carlo Simulation Algorithm, multithreading, programming languages
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From this post, we know the non-deterministic approach to compute the approximation of math constant PI. The random algorithms e.g. such as xorshift need to be of high quality …
Simple and Fast Hash Functions in Delphi
A Hash function returns a 32-bit (or sometimes 64-bit) integers for any given length of data. The function has to be as fast as possible and the collision should …
C# Randomness Using GUID
I have a C# function that generates a random upper case string of given length. It looks straightforward and the class StringBuilder is used to concatenate each random character. …