JS FUND MIDEX_Memory Game

function memoryGame(inputArr) {

  let numbers = inputArr.shift().trim().split(" ");
  let moves = 0;

  while (numbers.length > 1 && inputArr[0].toLowerCase() !== "end") {
    let [index1, index2] = inputArr.shift().split(" ");
    index1 = Number(index1);
    index2 = Number(index2);
    moves++;

    if (
      index1 < 0 ||
      index1 >= numbers.length ||
      index1 === index2 ||
      index2 < 0 ||
      index2 >= numbers.length
    ) {
      let index = Math.trunc(numbers.length / 2);

      let symbol = "-" + moves + "a";

      numbers.splice(index, 0, symbol, symbol);

      console.log("Invalid input! Adding additional elements to the board");
    } else {
      let num1 = numbers[index1];

      let num2 = numbers[index2];

      if (num1 === num2) {
        numbers.splice(index1, 1);
        index2 = numbers.indexOf(num2);
        numbers.splice(index2, 1);
        console.log(`Congrats! You have found matching elements - ${num1}!`);
      } else if (num1 !== num2) {
        console.log("Try again!");
      }
    }
  }

  if (numbers.length === 0 || numbers.length === 1) {
    console.log(`You have won in ${moves} turns!`);
  } else {
    console.log(`Sorry you lose :(`);

    console.log(`${numbers.join(" ")}`);
  }
}


memoryGame(["1 1 2 2 3 3 4 4 5 5", "1 0", "-1 0", "1 0", "1 0", "1 0", "end"]);

console.log(`--------`);

memoryGame(["a 2 4 a 2 4", "0 3", "0 2", "0 1", "0 1", "end"]);

console.log(`-------`);

memoryGame(["a 2 4 a 2 4", "4 0", "0 2", "0 1", "0 1", "end"]);