To sort a character array in alphabetical order

Question

input: this is a book
output: a book is this

Answer 1

Use array.sort() method:

e.g.

var arr = ["this", "is", "a", " book"];

console.log(arr.sort());

outputs: arr = ["a", "book", " is", "this"]

if you want to also arrange in descending character:

console.log(arr.sort());
console.log(arr.reverse());

Answer 2

I had tried this.It didn't work.

Answer 3

Which language are you coding with, because the above is JavaScript and works flawlessly.