![[看]](http://lf3-cdn-tos.bytescm.com/obj/static/xitu_juejin_web_seo/img/jj_emoji_97.39cdc9f.png)
获得徽章 17
- 今天去面试被问到了这个题，jym，看看答案是什么:
let arr = [
[1, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22],
[2, 8, 12, 18, 22],
[3, 7, 12, 13, 14, 15, 16, 18, 22],
[4, 6, 16, 18, 22],
[5, 5, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22],
];
function demo(arr) {
let str = "";
for (let i = 0; i < arr.length; i++) {
for (j = 0; j < 30; j++) {
if (arr[i].indexOf(j) > -1) {
str += "█";
} else {
str += " ";
}
}
str += "\n";
}
return str;
}
console.log(demo(arr));展开1613
![[流泪]](http://lf3-cdn-tos.bytescm.com/obj/static/xitu_juejin_web_seo/img/jj_emoji_6.dde0d83.png)