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This tutorials explains about how to do sum of array numbers in Ruby?
Ruby sum of array numbers
There are number of ways we can calculate sum of array of numbers in Ruby
- sum method
- reduce method
- inject method
sum method: sum method
numbers = [1,2,3,4]
result = numbers.sum
puts "#{result}"
result1=0
numbers.sum {|item| result1+=item }
puts "#{result1}"
result2=numbers.sum {|item| item }
puts "#{result2}"
Output
10
10
10
numbers = [1,2,3,4,5]
result=numbers.reduce(0, :+)
puts "#{result}"
result1=numbers.reduce(:+)
puts "#{result1}"
Output
10
numbers = [1,2,3,4,5]
result=numbers.inject(0, :+)
puts "#{result}"
result1=numbers.inject(:+)
puts "#{result1}"
