# Function which compute the largest difference in the array between a value and another value with a smaller index # Naive solution using nested loop : O(n) = n*n def maxDiff(source): max = -1000000; # For each item of the array for i in xrange(len(test) - 1, -1, -1): # For each item with smaller index than the current item for j in xrange(i, -1, -1): diff = source[i] - source[j] # If the difference is bigger, then remember if diff > max: max = diff return max # A little bit of testing test = [1, 2, 3, 4, 5, 6] print test print "The maximum difference is: " + str(maxDiff(test)) test2 = [1, 2, 10, 4, 2, -1] print test2 print "The maximum difference is: " + str(maxDiff(test2))
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