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# Task 1: Element Digit Sum
# Submitted by: Mohammad Sajid Anwar
#
# You are given an array of integers, @ints.
# Write a script to evaluate the absolute difference between element and digit sum of the given array.
#
# Example 1
# Input: @ints = (1,2,3,45)
# Output: 36
#
# Element Sum: 1 + 2 + 3 + 45 = 51
# Digit Sum: 1 + 2 + 3 + 4 + 5 = 15
# Absolute Difference: | 51 - 15 | = 36
#
# Example 2
# Input: @ints = (1,12,3)
# Output: 9
#
# Element Sum: 1 + 12 + 3 = 16
# Digit Sum: 1 + 1 + 2 + 3 = 7
# Absolute Difference: | 16 - 7 | = 9
#
# Example 3
# Input: @ints = (1,2,3,4)
# Output: 0
#
# Element Sum: 1 + 2 + 3 + 4 = 10
# Digit Sum: 1 + 2 + 3 + 4 = 10
# Absolute Difference: | 10 - 10 | = 0
#
# Example 4
# Input: @ints = (236, 416, 336, 350)
# Output: 1296
defmodule AbsoluteDifference do
def sum_digits(ints) do
ints
|> Enum.map(fn x -> Enum.sum( Integer.digits(x) ) end)
|> Enum.sum()
end
def abs_diff(ints) do
Enum.sum(ints) - sum_digits(ints)
end
def out(ints) do
IO.write( "(" <> Enum.join(ints, ",") <> ") -> ")
IO.puts( abs_diff(ints) )
end
end
ints = [1,2,3,45]
AbsoluteDifference.out(ints)
ints = [1,12,3]
AbsoluteDifference.out(ints)
ints = [1,2,3,4]
AbsoluteDifference.out(ints)
ints = [236, 416, 336, 350]
AbsoluteDifference.out(ints)
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