import java.util.Scanner;


class L21 {
	public static void main(String[] args) {

		int[][] matrix = {{2,3,4},{1,2}};

		double[] meanArray = new double[matrix.length];

		for(int i = 0; i < matrix.length; i++) {

			int[] arr = matrix[i];
			double sum = 0.0;
			for(int j = 0; j < arr.length; j++) {
				sum = sum + arr[j];
			}
			double mean = sum / arr.length;
			meanArray[i] = mean;
		}

		for(int i = 0; i < meanArray.length; i++) {
			System.out.print(meanArray[i] + " ");
		}
		System.out.println();

		// call createArray
		int[] arr1 = createArray(5);
		System.out.println(arr1);

		for(int elm: arr1) {
			System.out.print(elm + " ");
		}
		System.out.println();

		Scanner kb = new Scanner(System.in);
		System.out.println("Please enter an integer");
		int input = kb.nextInt();

		System.out.println(multipleReturns(input));

		sum(args);

	} // end of main

	static int[]  createArray(int n) {
		int[] arr = new int[n];
		return arr;
	}
	
	// create a method that takes an integer as an argument and 
	// returns "one" if the value is 1, "two" if the value is 2, and
	// "other" otherwise.

	static String multipleReturns(int k) {
		if (k == 1) {
			return "one";
		}
		if (k == 2) {
			return "two";
		}
		return "other";
	}

	// create method named sum that takes in args and prints
	// the sum of the values passed in on the command line

	static void sum(String[] arr) {
		int[] nums = new int[arr.length];
	
		for(int i = 0; i < arr.length; i++) {
			nums[i] = Integer.parseInt(arr[i]);
		}
	
		int sum = 0;
		for(int elm : nums) {
			sum += elm;
		}
	
		System.out.println("sum: " + sum);
	}


} // end of class