Here is a Challenge [answer with a code] (01)

Question

Anne and Bob were counting. Anne was counting slowly up to 2017. Everytime Anne would say a number Bob would add it to a running total. But everytime
the number was a perfect square Bob would be so excited that he would add it twice.

What is the total Bob gets to.

P.S. The first one to answer gets the XP.

Answer 1

Here's mine:
https://code.sololearn.com/cFjO319vE1Oc/?ref=app

Answer 2

Better late than never :)

https://code.sololearn.com/cZGNsrEvVXqK/?ref=app

Answer 3

@Kuba Siekierzyński
I got this ^^
https://code.sololearn.com/cwEgOLjEIW40/?ref=app

Answer 4

https://code.sololearn.com/cZpAkjeEK0Og/?ref=app

Just a bit too late :(. Still posting it anyway.

Answer 5

@Ulisses Cruz
N * (N + 1) / 2
is the same as 1 + 2 + 3 + ... + N - 2 + N - 1 + N
It gets the sum way faster than just iterating and adding.
Then I just iterate over the square numbers and add that again so that they are added twice.

Answer 6

Anybody got this in Ruby? Or... ;)

Answer 7

@Dennis 👏👏👏

Answer 8

Waw. I'm glad I posted this challenge. I learned a lot with you guys.
EDITED
Thas a new method I want to remembre @Dennis.

Answer 9

Good method for testing perfect square @Kuba Siekierzyñski.

Answer 10

@Dennis can you explain your algorithm, please.

Answer 11

new challenge:

https://www.sololearn.com/discuss/435761/?ref=app

Answer 12

another challenge:

https://www.sololearn.com/discuss/435877/?ref=app

Answer 13

https://code.sololearn.com/can1HMtoKeSI/?ref=app