I have an array like this:

[
 {
   "name":"Jack"
   "category":"football player"
 },
 {
   "name":"Mario"
   "category":"football player"
 },
 {
   "name":"Alex"
   "category":"football player"
 },
 {
   "name":"John"
   "category":"basketball player"
 },
 {
   "name":"Antony"
   "category":"basketball player"
 },
]

I need to group the array by the category, and then loop all this and show the 2 categories with all the football players and all the basketball players.

Like this:

Football player:

Jack Mario Alex

Basketball player:

John Antony