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假设我有以下data.frame:变化最后两位数字为 “00”
dt=data.frame(id=LETTERS[1:5],code=c("101011,101102,101130","211011,101102",
"101011,301102,101132","201015,401102,103412","131011,101101,105430"))
id code
A 101011,101102,101130
B 211011,101102
C 101011,301102,101132
D 201015,401102,103412
E 131011,101101,105430
F 101100,103200`
我希望代码的最后两个数字变成 “00”,就像这样:
id code
A 101000,101100,101100
B 211000,101100
C 101000,301100,101100
D 201000,401100,103400
E 131000,101100,105400
F 101100,103200`
我怎样才能做到这一点?