Stock Buy and Sell Python

PROGRAM TO CALCULATE THE STOCK TO BUY/SELL TO MAXIMIZE THE PROFIT.

def stockBuySell(price, n):

      

    # Prices must be given for at least two days

    if (n == 1):

        return

      

    # Traverse through given price array

    i = 0

    while (i < (n - 1)):

          

        # Find Local Minima

        # Note that the limit is (n-2) as we are

        # comparing present element to the next element

        while ((i < (n - 1)) and 

                (price[i + 1] <= price[i])):

            i += 1

          

        # If we reached the end, break

        # as no further solution possible

        if (i == n - 1):

            break

          

        # Store the index of minima

        buy = i

        i += 1

          

        # Find Local Maxima

        # Note that the limit is (n-1) as we are

        # comparing to previous element

        while ((i < n) and (price[i] >= price[i - 1])):

            i += 1

              

        # Store the index of maxima

        sell = i - 1

          

        print("Buy on day: ",buy,"\t",

                "Sell on day: ",sell)

          

# Driver code

  

# Stock prices on consecutive days

price = [100, 180, 260, 310, 40, 535, 695]

n = len(price)

  

# Fucntion call

stockBuySell(price, n)

OUTPUT

Buy on day : 0   Sell on day: 3
Buy on day : 4   Sell on day: 6

CREDITS: https://www.geeksforgeeks.org/stock-buy-sell/