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  1. al = ['A', 'B', 'C', 'D']
  2. puts(al.length) # 4
  3. al.push('E')
  4. print(al) # ["A", "B", "C", "D", "E"]
  5. al.delete_at(0)
  6. print("\n")
  7. print(al) # ["B", "C", "D", "E"]
Success #stdin #stdout 0.01s 7412KB
comments (?)
stdin 
Standard input is empty
stdout 
4
["A", "B", "C", "D", "E"]
["B", "C", "D", "E"]
https://ideone.com/WbPfNp
language:
Ruby (ruby 2.5.5)
created:
9 years ago
visibility:
public

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