how to get a for loop to stop scala code example

Example 1: how loop in scala

for (i <- 1 to 10 if i < 4) println(i)

Example 2: how loop in scala

res: Seq[(Int, Char)] = List((1,a), (1,b), (1,c), 
                             (2,a), (2,b), (2,c),
                             (3,a), (3,b), (3,c))