qwe

function distance(array) {
    let result = checkDistance();
    console.log(result);

    function checkDistance() {
        let x1 = array.shift();
        let y1 = array.shift();
        let x2 = array.shift();
        let y2 = array.shift();
        let toPrint = '';

        let xPointToZero = Math.sqrt(Math.pow((x1 - 0), 2) + Math.pow((y1 - 0), 2));
        let yPointToZero = Math.sqrt(Math.pow((y1 - 0), 2) + Math.pow((y2 - 0), 2));
        let distanceBetweenPoints = Math.sqrt(Math.pow((x2 - x1), 2) + Math.pow((y2 - y1), 2));

        if (Number.isInteger(xPointToZero)) {
            toPrint += `{${x1}, ${y1}} to {0, 0} is valid\n`;
        } else {
            toPrint += `{${x1}, ${y1}} to {0, 0} is invalid\n`;
        }

        if (Number.isInteger(yPointToZero)) {
            toPrint += `{${x2}, ${y2}} to {0, 0} is valid\n`;
        } else {
            toPrint += `{${x2}, ${y2}} to {0, 0} is invalid\n`;
        }

        if (Number.isInteger(distanceBetweenPoints)) {
            toPrint += `{${x1}, ${y1}} to {${x2}, ${y2}} is valid\n`;
        } else {
            toPrint += `{${x1}, ${y1}} to {${x2}, ${y2}} is invalid\n`;
        }

        return toPrint;
    }
}
distance([3, 0, 8, 0])