削除配列要素最高とこれを行う方法は何

Question

：私はbの要素が含まれa内部にネストされた配列を削除したい

a=[['a','one'],['b','two'],['c','three'],['d','four']] 

とb=['two','three']

：私は2つの配列を持っている これを取得する：

[['a','one']['d','four'] 

ありがとうございました。救助へ

Answer 1

a = [['a','one'],['b','two'],['c','three'],['d','four']] 
b = ['two','three'] 

a.delete_if { |x| b.include?(x.last) } 

p a 
# => [["a", "one"], ["d", "four"]] 

Answer 2

a=[['a','one'],['b','two'],['c','three'],['d','four']] 
b=['two','three']  
result=a.reject { |e| b.include?(e.first) or b.include?(e.last) } 
# result => [["a", "one"], ["d", "four"]] 

Answer 3

rassoc！

b.each {|el| a.delete(a.rassoc(el)) }