根据一组索引删除数组的内容 [英] Delete contents of array based on a set of indexes

问题描述

delete_at 只需要一个索引.使用内置方法实现这一目标的好方法是什么?不一定是集合，也可以是索引数组.

delete_at only takes a single index. What's a good way to achieve this using built-in methods? Doesn't have to be a set, can be an array of indexes as well.

arr = ["a", "b", "c"]
set = Set.new [1, 2]
arr.delete_at set
# => arr = ["a"]

推荐答案

One-liner:

arr.delete_if.with_index { |_, index| set.include? index }

这篇关于根据一组索引删除数组的内容的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！