121. Best Time to Buy and Sell Stock

1function maxProfit(prices: number[]): number {
2    let min_price = Infinity;
3    let max_profit: number =  0;
4    for (const price of prices) {
5        min_price = Math.min(min_price, price);
6        max_profit = Math.max(max_profit, price - min_price)
7    }
8    return max_profit;
9};