On 2014-05-07 16:27, C Smith wrote:
#sum all even fib seq integers under 4 million
fibs = [1,2]
sum = 0
while fibs[-1] < 4000000:
nexty = fibs[-1] + fibs[-2]
fibs.append(nexty)
for xer in fibs:
if xer%2 == 0:
sum += xer
print sum
This gets the correct solution, but what would be ways to improve
speed or use more complicated parts of Python to do the same thing.
Thanks in advance
I think you could eliminate the second part, could you not, by inserting
the (slightly modified) if statement into the while statement?
while fibs[-1] < 4000000:
nexty = fibs[-1] + fibs[-2]
if nexty%2 ==0:
sum += nexty
fibs.append(nexty)
Also you might want to initialize 'sum' to 1 rather than 0 since the
second element in your 'fibs' won't get counted.
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