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


# Given an m x n matrix,
# produce a stream of the matrix elements (taken row-wise)
# up to but excluding the first occurrence of $max
def stream($max):
  . as $matrix
  | length as $m
  | (.[0] | length) as $n
  | label $ok
  | {i: range(0;$m), j: range(0;$n)}
  | $matrix[.i][.j] as $m
  | if $m == $max then break $ok else $m end ;