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curriculum/challenges/english/blocks/workshop-space-mission-roster/694dfd604c32cfe8e298784c.md

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--description--

Mission control has requested you to swap the positions of two astronauts in your squad array, specifically members at indices 2 and 5. Use your swapCrewMembers() function to perform the swap and store the result in a new variable named updatedSquad.

--hints--

You should use swapCrewMembers() to swap squad members at indices 2 and 5 and store the resulting array in a new variable named updatedSquad.

js
assert.match(
  __helpers.removeJSComments(code),
  /(let|const)\s+updatedSquad/,
  "You must have at least one space between the declaration keyword (let/const) and 'updatedSquad'"
);
const cleaned = __helpers.removeWhiteSpace(__helpers.removeJSComments(code));
assert.match(cleaned, /(let|const)updatedSquad=swapCrewMembers\(squad,?(2,?5|5,?2)\)/);
const result = [...updatedSquad];
assert.strictEqual(result[2].name, "Felix");
assert.strictEqual(result[5].name, "Caroline");

--seed--

--seed-contents--

js
const squad = [];

const firstAstronaut = {
  id: 1,
  name: "Andy",
  role: "Commander",
  isEVAEligible: true,
  priority: 3
};

function addCrewMember(crew, astronaut) {
  for (let i = 0; i < crew.length; i++) {
    if (crew[i].id === astronaut.id) {
      console.log("Duplicate ID: " + astronaut.id);
      return;
    }
  }
  crew.push(astronaut);
}

addCrewMember(squad, firstAstronaut);

const remainingCrew = [
  { id: 2, name: "Bart", role: "Pilot", isEVAEligible: false, priority: 8 },
  { id: 3, name: "Caroline", role: "Engineer", isEVAEligible: true, priority: 4 },
  { id: 4, name: "Diego", role: "Scientist", isEVAEligible: false, priority: 1 },
  { id: 5, name: "Elise", role: "Medic", isEVAEligible: true, priority: 7 },
  { id: 6, name: "Felix", role: "Navigator", isEVAEligible: true, priority: 6 },
  { id: 7, name: "Gertrude", role: "Communications", isEVAEligible: false, priority: 4 },
  { id: 8, name: "Hank", role: "Mechanic", isEVAEligible: true, priority: 2 },
  { id: 9, name: "Irene", role: "Specialist", isEVAEligible: true, priority: 5 },
  { id: 10, name: "Joan", role: "Technician", isEVAEligible: false, priority: 1 },
];

for (let i = 0; i < remainingCrew.length; i++) {
  addCrewMember(squad, remainingCrew[i]);
}

function swapCrewMembers(crew, fromIndex, toIndex) {
  if (
    fromIndex < 0 || 
    toIndex < 0 ||
    fromIndex >= crew.length ||
    toIndex >= crew.length
  ) {
    console.log("Invalid crew indices");
    return;
  }

  const updatedCrew = crew.slice();
  updatedCrew[fromIndex] = updatedCrew.splice(toIndex, 1, updatedCrew[fromIndex])[0];
  for (let i = 0; i < updatedCrew.length; i++) {
    console.log(updatedCrew[i].name);
  }

  return updatedCrew; 
}

--fcc-editable-region--

--fcc-editable-region--