tmp.txt

public class first_week_exs {
	public static void main(String[] args) {
		System.out.println("Select one exercise: ");
		int N = Integer.parseInt(args[0]);
		int M = Integer.parseInt(args[1]);
		if (N == 1) {
			factor(M);
		}
		else if(N == 2)
			flips();
		else
			factor2(M);
	}
	static int get_power(int N, int i) {
		int j = 0;
		int power;
		while (true){
			power = (int) Math.pow(i, j);
			if (N%power == 0) {
				j++;
				continue;
			}
			else
				break;
		}
		return (j-1);
	}
	static boolean isprime(int i) {
		for (int j = 2; j<=Math.sqrt(i); j++) {
			if (i%j ==0)
				return false;
		}
		return true;
	}
	static void factor(int N) {
		String product = "";
		for (int i = 2; i<= N/2; i++) {
			if (N%i == 0 && isprime(i) == true) {
				//Find the factors of N as well as its power
				int m = get_power(N, i);
				product += i;
				if(m > 1) {
					product += "^";
					product += m;
				}
				product += "*";	
			}
		}
		String result = "";
		System.out.println("The standard form of factorizatoin: ");
		for (int j = 0; j< product.length()-1; j++) {
			result += product.charAt(j);
		}
		System.out.println(result);
	}
	
	static void flips() {
		double high = 50.0;
		double low = 0.0;
		double init = 25.0;
		double flip;
		int times = 0;
		
		
		while (init >= low && init <= high) {
			flip = Math.random();
			if (flip >= 0.5) {
				init += 0.7;
			}
			else
				init -= 0.7;
			
			times++;
		}
		System.out.println("Total times for play: ");
		System.out.println(times);
	}
	static void factor2(int N) {
		System.out.println("The factors are: ");
		String k = "1 ";
		for (int i = 2; i<=N/2; i++) {
			if (N%i == 0) {
				k += i; 
				k += " ";
			}
		}
		System.out.print(k);
	}