Array(Ruby)

It's about Ruby arrays. Recently, I've been doing some competition programming in Ruby. I'm worried about when to migrate to C++.


	#要素の作成
	arr = ['apple', 'orange', 'rice','water']

	#二つ目の要素にアクセス -> orange
	puts arr[1]

	#要素の置換 -> pineapple
	arr[2] = "pineapple"
	puts arr[2]

	#長さの取得 -> 4
	puts arr.length

	#空かどうかの確認 -> false
	puts arr.empty?

	#ソート -> apple orange pineapple water
	puts arr.sort

	#要素の追加　-> apple orange pineapple water grape
	arr = arr.push("grape")
	puts arr

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