diff.rb

#==================================
# Author      : Senthil
# Author Nick : beck03076
# Description : Given N integers, Count the total pairs of Integers that have a difference of k
#==================================
# Getting input from console
puts "Enter comma separated numbers"
a = gets.chomp.split(",").map(&:to_i)
puts "Enter the value of K(difference)"
k = gets.chomp.to_i

# setting count
count = 0

# looping the n number of integers
for i in 1..a.length - 1
  # iterating backwards from every element 
  i.downto(0) { |j|
  p "Going to try #{a[i]} minus #{a[j-1]}.."
  try = a[i] - a[j-1]
  if try == k
    count = count + 1
    p "#####==SUCCESS==#### at #{a[i]} minus #{a[j-1]}.."
  elsif try > k
   break
  end
  }
end

# Result
p "There were #{a.size} number of integers in the given array .."
p "The value of difference k preferred by the user is #{k} .."
p "####== THERE ARE #{count} PAIRS OF INTEGERS THAT HAVE A DIFFERENCE OF #{k} ==####"