array manipulations

function  solve(arr){

   let array = arr.shift().split(' ').map(x=>Number(x));

    for (let i = 0; i < arr.length; i++) {

        let massive = arr[i].split(' ');

        switch (massive[0]){
            case 'Add':
                array.push(Number(massive[1]));
                break;
            case 'Remove':
                for (let el of array) {
                    if (el == massive[1]){
                        let index = array.indexOf(el);
                        array.splice(index, 1);
                    }
                }
                break;
            case 'RemoveAt':
                let index = Number(massive[1]);
                array.splice(index,1);
                break;
            case 'Insert':
                let number = Number(massive[1]);
                let indexNum = Number(massive[2]);
                array.splice(indexNum, 0, number);
                break;
        }
    }

    console.log(array.join(' '));
}