StockProfitCalculator.java

package com.sarvesh.javabasics;

import java.util.Scanner;

public class StockProfitCalculator {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter Number of Days: ");
        int n = sc.nextInt();

        int[] prices = new int[n];
        System.out.print("Enter Stock Prices:");
        for (int i = 0; i < n; i++) {
            prices[i] = sc.nextInt();
        }

        System.out.println("Maximum Profit: " + maximumProfit(prices));
        sc.close();
    }

    public static int maximumProfit(int[] prices) {

        int minPrice = prices[0];
        int maxProfit = 0;

        for (int i = 1; i < prices.length; i++) {

            if (prices[i] < minPrice) {
                minPrice = prices[i];
            } else {
                int profit = prices[i] - minPrice;

                if (profit > maxProfit) {
                    maxProfit = profit;
                }
            }
        }

        return maxProfit;
    }
}