function laLouvre(array) {
    let paintingsArray = array.shift()
        .split(' ')
        .map(Number);

    let currentManipulations = array.shift().split(' ')

    while (currentManipulations[0] !== 'END') {
        const firstNumber = +currentManipulations[1];
        const secondNumber = +currentManipulations[2];

        if (currentManipulations[0] === 'Change') {
            if (paintingsArray.indexOf(firstNumber !== -1)) {
                paintingsArray[paintingsArray.indexOf(firstNumber)] = secondNumber;
            }
        } else if (currentManipulations[0] === 'Hide') {
            if ((paintingsArray.indexOf(firstNumber) >= 0)) {
                paintingsArray.splice(paintingsArray.indexOf(firstNumber), 1)
            }
        } else if (currentManipulations[0] === 'Switch') {
            if ((paintingsArray.indexOf(firstNumber) >= 0) && (paintingsArray.indexOf(secondNumber) >= 0)) {

                const savedFirst = firstNumber;
                const fIndex = paintingsArray.indexOf(firstNumber);
                const sIndex = paintingsArray.indexOf(secondNumber);
                paintingsArray[fIndex] = +secondNumber;
                paintingsArray[sIndex] = +savedFirst;
            }
        } else if (currentManipulations[0] === 'Insert') {
            if ((paintingsArray.length + 1) >= firstNumber) {
                paintingsArray.splice((firstNumber + 1), 0, secondNumber);
            }
        } else if (currentManipulations[0] === 'Reverse') {
            paintingsArray.reverse();
        }
        currentManipulations = array.shift().split(' ');
    }
    console.log(paintingsArray.join(' '));
}
laLouvre(['77 120 115 101 101 97 78 88 112 111 108 101 111 110',
    'Insert 5 32',
    'Switch 97 78',
    'Hide 88',
    'Change 120 117',
    'END']
)