- Write a program that prompts the user to enter a number and then prints the sum of all odd numbers from 1 to that number. -- The program should use a function to read the number and a function to ...

Given an array of integers arr, return the number of sub-arrays with an odd sum. A sub-array is a contiguous part of the array. The solution uses a prefix sum approach to efficiently count the number ...

A mathematical proof is a sequence of statements that follow on logically from each other that shows that something is always true. Using letters to stand for numbers means that we can make statements ...