[R] How to use "ifelse" to generate random value from a distribution

[alex46015]

I need use different parameters of distribution for different case to
generate random value, but I use ifelse, the generated value is fixed
without change. 
Here is  example
data1
    y x
1   1 2
2   2 1
3   3 2
4   4 3
5   5 3
6   6 1
7   7 2
8   8 1
9   9 1
10 10 3
11 11 3
12 12 2
ifelse(data1$x==1,rnorm(1,2,1),ifelse(data1$x==2,rnorm(1,-2,1),rnorm(1,110,1)))
 [1]  -1.8042172   0.8478681  -1.8042172 110.0301239 110.0301239   0.8478681 
-1.8042172   0.8478681   0.8478681 110.0301239
[11] 110.0301239  -1.8042172

How can I get real random value from a distribution. Thanks.
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