find the mode in a array?

array#mode dev bootcamp

 solution #1

array = [1, 1, 1, 2, 3]

#whats going on here??
freq = array.inject(Hash.new(0)) { |h,v| h[v] += 1; h }
arr.sort_by { |v| freq[v] }.last


solution #2

def mode(array)
  count = Hash.new(0)
  array.each { |element| count[element] += 1 } 
                        
                            #count how many times an element[s] appears the most
                            # element of the array => number of times element occured in an array
                            # ex. {5 => 2, 6 =>2, 7 =>1}

  max = count.values.max
  count.keep_if { |key, val| val == max}
                            # count is {5 => 2, 6 =>2}
  count.keys  #return an array of those elements
end
 
#p mode ([5,5,6,6,7})
#alt
 
def mode(array)
  array.group_by {|num| array.count(num)}.max.last.uniq
end