Print a nice graph

graph.js

const bars = [1, 2, 4, 1, 4, 7, 2, 12, 12, 5];

const heightOfGraph = Math.max(...bars);

let graph = '';
for (let i = heightOfGraph; i > 0; i--) {
  graph += bars.reduce((row, bar) => row + (i - bar > 0 ? ' ' : '+'), '') + '\n';
}

console.log(graph);
/*
       ++ 
       ++ 
       ++ 
       ++ 
       ++ 
     + ++ 
     + ++ 
     + +++
  + ++ +++
  + ++ +++
 ++ ++++++
++++++++++
*/