void-main-args
Personal notes on anything about programming.
Monday, November 1, 2010
Problem: Euler Task 16 - What is the sum of the digits of the number 2^1000?
"2
^{15}
= 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.
What is the sum of the digits of the number 2
^{1000}
?"
One line:
((2 :BigInt) pow 1000).toString.foldLeft(0)(_ + _ - '0')
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