Spawn Random Enemies 2D

Questions & Answers
1

I’m trying to get enemies to spawn randomly. Any help with this?

using UnityEngine;
using System.Collections;

public class SpawnRandom : MonoBehaviour {

    public GameObject[] objects;
    public float spawnTime = 3f;
    private Vector3 spawnPosition;

    // Use this for initialization
    void Start()
    {
       
        InvokeRepeating("Spawn", spawnTime, spawnTime);

    }

    void Spawn()
    {
        spawnPosition.x = Random.Range(-17, 17);
        spawnPosition.y = 0.5f;
        spawnPosition.z = Random.Range(-17, 17);

        Instantiate(objects[UnityEngine.Random.Range(0, - 1)], spawnPosition, Quaternion.identity);
    }

}
2

Last line is confusing:

Instantiate(objects[UnityEngine.Random.Range(0, - 1)], spawnPosition, Quaternion.identity);

Tryed this?

 Instantiate(objects[UnityEngine.Random.Range(0,objects.Length - 1)], spawnPosition, Quaternion.identity);