Best Time to Buy and Sell Stockeasy

package main

import "fmt"

func maxProfit(prices []int) int {
	// TODO: find the maximum profit from a single buy/sell
	return 0
}

func main() {
	fmt.Println(maxProfit([]int{7, 1, 5, 3, 6, 4})) // 5
	fmt.Println(maxProfit([]int{7, 6, 4, 3, 1}))     // 0
}