03. Last Stop Technology FundamMid Exam - 10 March 2019

function lastStop(input) {
    let collection = input.shift().split(' ').map(Number);
    let currenOperation = input.shift().split(' ');
    let command = currenOperation[0];

    while (command !== 'END') {
        if (command === 'Change') {
            let paintingNumber = Number(currenOperation[1]);
            let changedNumber = Number(currenOperation[2]);
            if (collection.includes(paintingNumber)) {
                collection.splice(collection.indexOf(paintingNumber), 1, changedNumber);
            }
        } else if (command === 'Hide') {
            let numberForHidden = Number(currenOperation[1]);
            if (collection.includes(numberForHidden)) {
                collection.splice(collection.indexOf(numberForHidden), 1);
            }
        } else if (command === 'Switch') {
            let paintingNumber1 = Number(currenOperation[1]);
            let paintingNumber2 = Number(currenOperation[2]);
            let index1 = collection.indexOf(paintingNumber1);
            let index2 = collection.indexOf(paintingNumber2);
            if (collection.includes(paintingNumber1) && collection.includes(paintingNumber2)) {
                collection.splice(index1, 1, paintingNumber2);
                collection.splice(index2, 1, paintingNumber1);
            }
        } else if (command === 'Insert') {
            let index = Number(currenOperation[1]) + 1;
            let paintingNumber = Number(currenOperation[2]);
            if (0 <= index && index <= collection.length) {
                collection.splice(index, 0, paintingNumber)
            }
        } else if (command === 'Reverse') {
            collection.reverse();
        }

        currenOperation = input.shift().split(' ');
        command = currenOperation[0];
    }
    console.log(collection.join(' '));
}