Show a nested loop which searches a two-dimensional array filled with random numbers uniformly distributed over 



[
1
,
…
,
20
]


{\displaystyle [1,\ldots ,20]}

.

The loops iterate rows and columns of the array printing the elements until the value 



20


{\displaystyle 20}

 is met.

Specifically, this task also shows how to break out of nested loops.



Related tasks

   Loop over multiple arrays simultaneously
   Loops/Break
   Loops/Continue
   Loops/Do-while
   Loops/Downward for
   Loops/For
   Loops/For with a specified step
   Loops/Foreach
   Loops/Increment loop index within loop body
   Loops/Infinite
   Loops/N plus one half
   Loops/Nested
   Loops/While
   Loops/with multiple ranges
   Loops/Wrong ranges


package main
 
import (
    "fmt"
    "math/rand"
    "time"
)
 
func main() {
    rand.Seed(time.Now().UnixNano())
 
    values := make([][]int, 10)
    for i := range values {
        values[i] = make([]int, 10)
        for j := range values[i] {
            values[i][j] = rand.Intn(20) + 1
        }
    }
 
outerLoop:
    for i, row := range values {
        fmt.Printf("%3d)", i)
        for _, value := range row {
            fmt.Printf(" %3d", value)
            if value == 20 {
                break outerLoop
            }
        }
        fmt.Printf("\n")
    }
    fmt.Printf("\n")
}