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  1. # your code goes here
  2. a = ["a", "b", "c"]
  3. puts a
  4. a.push("d")
  5. puts a
  6. a.pop
  7. puts a
Success #stdin #stdout 0s 28968KB
stdin
Standard input is empty
stdout
a
b
c
a
b
c
d
a
b
c