A positive integer is called a perfect number if it is equal to the sum of all of its positive divisors, excluding itself. For example, 6 is the first perfect number because 6 = 3 + 2 + 1. (The same applies for 28 = 1 + 2 + 4 + 7 + 14). Write a program that creates an array of N integers (N = 3000) and fills it with random numbers between 1 and 200. The program has to count the number of perfect numbers in this array. To do that in less time, it breaks down the job between three threads: 1. threadLow: counts perfect numbers in the first part of the array. (From 0 up to 1000) 2. threadMiddle: counts perfect numbers in the second part of the array. (From 1000 up to 2000)

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Multithreading methods

Multithreading is a type of multitasking. Java supports built-in multithreaded programming. In multithreading, a program has two or more parts that run concurrently. Each part is a thread, and every single thread describes a unique execution path. Multiple threads execute parallel to each other.