Fragmentos

hashtag_generator.rb

# Generar hashtag de un texto 

# " Hello World " => "#HelloWorld"

def generateHashtag(str)
  str = "#" << str.split.map(&:capitalize).join
  str.size <= 140 && str.size > 1 ? str : false
end

is_alphanumeric.rb

def alphanumeric?(string) 
  return false if string == "" 
  string =~ /\A[[:alnum:]]+\z/ ? true : false
end

list_names.rb

# Listar nombres con el formato "Joel, Mario, Jason y Carlos"

def list *names
  names.join(', ').gsub(/, (\w+)$/, " y \\1")
end

# One line form

def list *names; names.join(', ').gsub(/, (\w+)$/, " y \\1"); end

next_bigger.rb

# Obtener el siguiente numero con los mismos digitos

def next_bigger(n)
  next_bigger = 0
  values = n.to_s.chars.to_a.permutation.to_a.map{|a| a.join}.uniq.sort 
  values.map.with_index{|v, i| next_bigger = values[i+1].to_i if v.to_i == n }
  return next_bigger
end

primes_optimal.rb

# Obtener los primeros x numeros primos de forma optima

def get_primes x
    primes=[]
    (2..x).each{ |n| primes.any?{|l| n%l==0 } ? nil : primes.push(n) }
    return primes
end

rgb_to_hex.rb

def rgb(r, g, b)
  "%.2X%.2X%.2X" % [r,g,b].map{|i| [[i,255].min,0].max}
end

Sudoku_validator.rb

#Valida soluciones de sudoku con la forma

validSolution([[5, 3, 4, 6, 7, 8, 9, 1, 2], 
               [6, 7, 2, 1, 9, 5, 3, 4, 8],
               [1, 9, 8, 3, 4, 2, 5, 6, 7],
               [8, 5, 9, 7, 6, 1, 4, 2, 3],
               [4, 2, 6, 8, 5, 3, 7, 9, 1],
               [7, 1, 3, 9, 2, 4, 8, 5, 6],
               [9, 6, 1, 5, 3, 7, 2, 8, 4],
               [2, 8, 7, 4, 1, 9, 6, 3, 5],
               [3, 4, 5, 2, 8, 6, 1, 7, 9]])

def validSolution(board) 
  (0..8).map{|i| board[i].reduce(:+) == board.transpose[i].reduce(:+) && board.transpose[i].uniq.count == 9 && board.transpose != board}.flatten.all? 
end 
   

validate_email.rb

def validate(email)
  (email =~ /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/) != nil
end