This Ruby code takes number of elements , array elements and sum to be found from user and print if there is any triplet present in array equating to sum provided

sumOfThreeNums.rb

#Code with O(n^3) complexity

def finding_elements arr,sum,arr_size
	 for i in 0...arr_size-2
       for j in i+1...arr_size-1
           for k in j+1...arr_size
      
               if (arr[i] + arr[j] + arr[k] === sum)
                 	print "Elements summing to #{sum} are : ",arr[i]," ",arr[j]," ",arr[k];
                 	puts;
                 	return;
    			end
    		end
    	end
    end

	puts " No triplet equate to provided sum ";
end

puts "Enter number of Elements in array : ";
num_of_elements = gets.chomp.to_i

arr = [];
puts "Input Elements each in new line";

i = 0 
while i < num_of_elements 
  current_element  = gets.chomp.to_i
	arr.push(current_element)
	i = i + 1
end

puts " Enter the Sum : ";
sum = gets.chomp.to_i

finding_elements(arr,sum,num_of_elements)

sumOfThreeNums2.rb

#Code with O(n^2) complexity

def bubble_sort(array)
  arr_size = array.length
  loop do
    swapped = false

    (arr_size-1).times do |i|
      if array[i] > array[i+1]
        array[i], array[i+1] = array[i+1], array[i]
        swapped = true
      end
    end

    break if not swapped
  end

  return array;
end

def finding_elements (arr,sum)
  sorted_arr = bubble_sort(arr);
  arr_size = arr.length;

  for i in 0...arr_size-2
    left = i+1;
    right = arr_size-1;

    while left < right
      if arr[i] + arr[left] + arr[right] === sum
        print "Elements summing to #{sum} are : ",arr[i]," ",arr[left]," ",arr[right];
        puts;
        return;
      elsif arr[i] + arr[left] + arr[right] < sum
        left = left + 1;
      else
        right = right - 1;
      end
    end
  end

    puts " No triplet equate to provided sum ";
end

  puts "Enter number of Elements in array : ";
  num_of_elements = gets.chomp.to_i;

  arr = [];
  puts "Input Elements each in new line";

  i = 0 ;
  while i < num_of_elements
    current_element  = gets.chomp.to_i
    arr.push(current_element)
    i = i + 1
  end

  puts " Enter the Sum : ";
  sum = gets.chomp.to_i;

  finding_elements(arr,sum)