daiando

def full_name(first, *rest)
    array = []
    rest.map{|x| array << x }
    array2 = []
    return error if first == nil
    array2 << first
    array2.concat(array).join(" ")
end
### array "names" includes all arguments
def full_name(*names)

daiando

def evaluate_num(val)
  return "RED"  if val <= 2
  return "BLUE" if val > 3
end
(1..5).group_by {|x|
          evaluate_num(x)
       }
#=> {"RED"=>[1, 2], "BLUE"=>[3, 4, 5]}

#marks = {"Ramesh":23, "Vivek":40, "Harsh":88, "Mohammad":60}

daiando

def func_any(hash)
    # Check and return if any key object within the hash is of the type Integer
    hash.any? {|key, value| key.is_a? Integer}
end

def func_all(hash)
    # Check and return if all the values within the hash are Integers and are < 10
    hash.all? {|key, value| value < 10}
end

daiando

def sum_terms(n)
  (1..n).reduce(0){|sum, i| sum + i**2 + 1}
end

daiando

def rot13(secret_messages)
  secret_messages.map { |x|
    x.tr!("A-Za-z", "N-ZA-Mn-za-m")
  }
end

daiando

array = []
sample = %w(a b c d e)
sample.each_with_index { |item, index| array[index] = "#{index}:#{item}" }
p array
=> ["0:a","1:b","2:c","3:d","4:e"]

daiando

#You have been provided with a custom object called colors that defines it's own each method. 
#You need to iterate over the items and return an Array containing the values.
def iterate_colors(colors)
    colors.map{|value| value}
end

daiando

#!/bin/bash
read N
if [ ${N} -gt 5 -o ${N} -lt 1 ]; then
  echo "input number must be =< 5 & => 1"
fi
###design
## vertical
for((countY=0;countY<${N};countY++)); do
  USE_VERTICAL=$((${USE_VERTICAL} + 2 * $((16 / 2 ** ${countY}))))
done