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Answers and rating deltas for

How do I shift the contents of a data frame in R?

Author Votes Δ
akrun 2 +1.28
A5C1D2H2I1M1N2O1R2T1 1 -0.94
JonMinton 0 -2.76
Last visited: Jan 2, 2016, 2:19:49 PM