HACKER RANK Project Euler 16 - Power Digit Sum - Solution.'Rb'

Project Euler Challenges-16 - Power Digit Sum Solution

Problem Statement

This problem is a programming version of Problem 16 from projecteuler.net

29=512 and the sum of its digits is 5+1+2=8.

What is the sum of the digits of the number 2N ?

Input Format 
The first line contains an integer T , i.e., number of test cases. 
Next T lines will contain an integer N.

Output Format 
Print the values corresponding to each test case.

Constraints 
1≤T≤100 
1≤N≤104 

Sample Input

3
3
4
7

Sample Output

8
7
11

Solution:

# Enter your code here. Read input from STDIN. Print output to STDOUT
a=gets
for i in 0...a.to_i
b=gets
b=2**b.to_i
#print b.to_i
#print "\n"
while b.to_i>0 do
c=b.to_i%10
#print c
d= d.to_i + c.to_i
b=b.to_i/10
end
print d.to_i
print "\n";
d=0;
end

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