function printPlannedStops(input) {
    let allLocations = input.shift();
    let line = input.shift();

    while (line !== "Travel") {
        let [command, ...rest] = line.split(":");

        switch (command) {
            case "Add Stop":
                let index = Number(rest[0]);
                let string = rest[1];
                if (index >= 0 && index <= allLocations.length) {
                    allLocations = allLocations.split("");
                    allLocations.splice(index, 0, string);
                    allLocations = allLocations.join("");
                }
                break;
            case "Remove Stop":
                let startIndex = Number(rest[0]);
                let endIndex = Number(rest[1]);
                if ((startIndex >= 0 && startIndex <= allLocations.length) && (endIndex >= 0 && endIndex <= allLocations.length)) {
                    allLocations = allLocations.split("");
                    allLocations.splice(startIndex, endIndex - startIndex + 1);
                    allLocations = allLocations.join("");
                }
                break;

            case "Switch":
                let oldString = rest[0];
                let newString = rest[1];
                let rgx = new RegExp(oldString, "g");
                allLocations = allLocations.replace(rgx, newString);

                break;
        }
        console.log(allLocations);
        line = input.shift();
    }
    console.log(`Ready for world tour! Planned stops: ${allLocations}`);
}