Maximum profit from the stock sale.

Maximum profit from a single buy and sale of stock data

	def maxProfit(arr):
	max_profit = 0
	diff = 0
	mlen = len(arr)
	for i in range(mlen):
	for j in range( i+1 ,mlen):
	if arr[i] < arr[j]:
	diff = arr[j] - arr[i]
	if max_profit < diff:
	max_profit = diff
	return max_profit
	arr = [0, 6, 10, 3, 2, 80, -1, 10, 1]
	print(maxProfit(arr))

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