import java.util.Arrays;

public class NumberGroup {
    private int[] nums;

    public NumberGroup(int[] nums){
        this.nums=nums;
    }

    public int[] getNums() {
        return nums;
    }

    public void setNums(int[] nums) {
        this.nums = nums;
    }

    /**
     * print all elements in nums array in the following format:
     * [element1, element2, element3, element4, . . . last element]
     * */
    public void printNums(){
        //write a loop that will access each item in the list
        //each iteration of the loop should print one item in the list
        System.out.print("["+nums[0]);
        for (int i=1; i<nums.length;i++){
            System.out.print(", "+nums[i]);
        }
        System.out.println("]");

    }

    /**
     * find and return the index of the target number in nums array
     * If target is not found, return -1
     * @param -1 < target < nums.length
     * @return index of the target element or -1 if target not found in nums
     * */
    public int findTargetNumber(int target){
        int count=0;
        int found=-1;
        while(found<0&&count<nums.length){
            if(nums[count]==target){
                found=count;
            }
        }
        return found;
    }
    /**
     * @return the count of even numbers stored in nums
     * */
    public int countEven(){
        //make a counter
        int count=0;
        //traversal loop from 0 to length-1
        for(int i=0; i<nums.length; i++){
            if(nums[i]%2==0){
                count++;
            }
        }
        return count;
    }

    @Override
    public String toString() {
        return "NumberGroup{" +
                "nums=" + Arrays.toString(nums) +
                '}';
    }


}