03. Moving Target

function movingTarget(input) {
    let targets = input.shift().split(' ').map(Number);
    [command, index, value] = input.shift().split(' ');

    while (command != "End") {
        index = Number(index);
        value = Number(value);
        if (command === "Shoot") {
            if (index >= 0 && index < targets.length) {
                targets[index] -= value;
                if (targets[index] <= 0) {
                    targets.splice(index, 1);
                }
            }
        } else if (command === "Add") {
            if (index >= 0 && index < targets.length) {
                targets.splice(index, 0, value);
            } else {
                console.log("Invalid placement!");
            }
        } else if (command === "Strike") {
            if (index - value >= 0 && index + value < targets.length) {
                targets.splice(index - value, value * 2 + 1);
            } else {
                console.log("Strike missed!");
            }
        }
        [command, index, value] = input.shift().split(' ');
    }

    console.log(targets.join('|'));
    return;
}