How to Check if Integer is Power of Four (C/C++) ?
Write a function to check whether a given 32-bit signed integer is a power of 4. Example: If num = 64, return true. and if num = 9, return …
Category: math
Algorithm to Determine the Best Time to Buy and Sell Stock
Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most …
How to Convert Roman to Integer in C/C++ and Python?
Convert a Roman numeral value (ranged from 1 to 3999) to Arabic integer. Letter by Letter Conversion from Roman to Arabic The first few Roman numbers are: I, II, …
Compute Number of 1’s Bits in C/C++
Write a function that takes an unsigned integer and returns the number of ’1′ bits it has (also known as the Hamming weight). For example, the 32-bit integer ’11′ …
Greedy Algorithm: What is the Best Time to Buy and Sell Stock?
Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You …