QuestionA.java

package Q17_14_Smallest_K;

import java.util.Arrays;

import CtCILibrary.AssortedMethods;

public class QuestionA {
	
	public static int[] smallestK(int[] array, int k) {
		if (k <= 0 || k > array.length) {
			throw new IllegalArgumentException();
		}
		
		/* Sort array. */
		Arrays.sort(array);
		
		/* Copy first k elements. */
		int[] smallest = new int[k];
		for (int i = 0; i < k; i++) {
			smallest[i] = array[i];
		}
		return smallest;
	}

	public static void main(String[] args) {
		int[] array = {1, 5, 2, 9, 1, 11, 6, 13, 15};
		int[] smallest = smallestK(array, 3);
		System.out.println(AssortedMethods.arrayToString(smallest));
	}

}