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


let m = []
 
for _ in 0 to 9 {
  let n = []
  for _ in 0 to 9 {
    let _ = Js.Array2.push(n, 1 + Js.Math.random_int(0, 20))
  }
  let _ = Js.Array2.push(m, n)
}
 
try {
  for i in 0 to 9 {
    for j in 0 to 9 {
      Js.log(m[i][j])
      if m[i][j] == 20 { raise(Exit) }
    }
  }
} catch {
| Exit => Js.log("stop")
}