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package ARRAYS;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class MergeArrays {

    /**
     *This class Takes two integer arrays nums1 and nums2. 
     * Merge both the arrays into a single array sorted in non-decreasing order.
     * The final sorted array should be stored inside the array nums1 and it should be done in-place
     * nums1 has a length of m + n, where the first m elements denote the elements of nums1 and rest are 0s.
     * nums2 has a length of n.
     *
     * Examples:
     * Input: nums1 = [-5, -2, 4, 5], nums2 = [-3, 1, 8]
     * Output: [-5, -3, -2, 1, 4, 5, 8]
     * Explanation:
     * The merged array is: [-5, -3, -2, 1, 4, 5, 8], where [-5, -2, 4, 5] are from nums1 and [-3, 1, 8] are from nums2
     *
     * Input: nums1 = [0, 2, 7, 8], nums2 = [-7, -3, -1]
     * Output: [-7, -3, -1, 0, 2, 7, 8]
     * Explanation:
     * The merged array is: [-7, -3, -1, 0, 2, 7, 8], where [0, 2, 7, 8] are from nums1 and [-7, -3, -1] are from nums2
     */
    public static int [] merge(int [] nums1, int[] nums2,int m,int n) {

        List<Integer> merge = new ArrayList<>();

        for (int i = 0; i < m; i++) {
            merge.add(nums1[i]);
        }
        for (int i = 0; i < n; i++) {
            merge.add (nums2[i]);
        }
        for (int i = 0; i < (m+n) ; i++) {
            nums1[i] = merge.get(i);
        }
        Arrays.sort(nums1);
        return nums1;
    }

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        System.out.print("ENTER ARR1 SIZE -> ");
        int m = sc.nextInt();
        System.out.print("ENTER ARR2 SIZE -> ");
        int n = sc.nextInt();
        System.out.println("ENTER ARR1 -> ");
        int nums1[] = new int[m+n];

        for (int i = 0; i < m+n; i++) {
            nums1[i] = sc.nextInt();
        }

        System.out.println("ENTER ARR2 -> ");
        int nums2[] = new int[n];

        for (int i = 0; i < n; i++) {
            nums2[i] = sc.nextInt();
        }
        System.out.println("ARRAY -> " + Arrays.toString(merge(nums1,nums2,m,n)));
    }
}