I would like to sum up two vectors, in a way that:

```
A = seq(10, 30, 10)
B = seq(1, 6, 1)
C = c()
for (i in B) {
for (j in A)
C = c(j + i)
}
```

C would be a vector with all results appearing from:

```
for (i in B) {
for (j in A)
print(j + i)
}
```

I am not interested in a matrix for this. What could I possibly do?

Thanks

### >Solution :

You can use `outer`

in this case.

```
c(outer(A, B, `+`))
[1] 11 21 31 12 22 32 13 23 33 14 24 34 15 25 35 16 26 36
```

If you really need a for loop, we can use the approach provided by @Feel free in the comment:

```
for (i in B) {
for (j in A)
C = append(C, j + i)
}
C
[1] 11 21 31 12 22 32 13 23 33 14 24 34 15 25 35 16 26 36
```