remove_the_injured.js

const manUTD = [ 
"David de Gea",
"Victor Lindelöf",
"Eric Bailly",
"Phil Jones",
"Marcos Rojo",
"Paul Pogba",
"Alexis Sánchez",
"Juan Mata",
"Romelu Lukaku",
"Anthony Martial",
"Axel Tuanzebe",
"Scott McTominay",
"Joel Castro Pereira",
"Cameron Borthwick-Jackson",
"Diogo Dalot"
]



const manchesterUnitedInjuryArray = ["Juan Mata", "Joel Castro Pereira", "Marcos Rojo", "Phil Jones", "Eric Bailly", "Alexis Sánchez", "Anthony Martial", "Cameron Borthwick-Jackson"]



function giveMeNonInjuredPlayers(wholeTeam,injuredPlayers)
{   
    let result = wholeTeam.filter((player) =>   
    !injuredPlayers.includes(player)  );   
    return result;  
}    


const fitPlayers = giveMeNonInjuredPlayers(manchesterUnitedArray, manchesterUnitedInjuryArray)


console.log(fitPlayers)
// Expected output:
// [ 'David de Gea',
//   'Victor Lindelöf',
//   'Paul Pogba',
//   'Romelu Lukaku',
//   'Axel Tuanzebe',
//   'Scott McTominay',
//   'Diogo Dalot' ]

// You can see that fitPlayers is a new array that is a transformation of the manchesterUnitedArray

console.log(manchesterUnitedArray)
// Expected output: 
// [ 
// "David de Gea",
// "Victor Lindelöf",
// "Eric Bailly",
// "Phil Jones",
// "Marcos Rojo",
// "Paul Pogba",
// "Alexis Sánchez",
// "Juan Mata",
// "Romelu Lukaku",
// "Anthony Martial",
// "Axel Tuanzebe",
// "Scott McTominay",
// "Joel Castro Pereira",
// "Cameron Borthwick-Jackson",
// "Diogo Dalot"
// ]

//  The transformation array is wholly intact and untouched