Inventory Stock Checker

You manage a warehouse and have an array representing the stock levels of different items. You need to determine if a specific item level is present in your inventory and return the position of its first occurrence. The inventory is sorted in increasing order of stock levels. If the stock level is found, return its 0-based index. Return -1 if not found. Input format: - The first line contains an integer n (1 <= n <= 10000): the number of items. - The second line contains n integers (0 <= stock[i] <= 10000): the stock levels sorted in increasing order. - The third line contains an integer target (0 <= target <= 10000): the item stock level you want to check. Output format: - A single integer representing the 0-based index of the item stock level or -1 if not found. Example: Input: 6 5 10 15 20 20 30 20 Output: 3