Move all zeros to end.

move-zero-to-end.js

function moveZeros(array) {
    let i = 0;
    let len = array.length;
    let s = undefined;
    let e = undefined;
    
    while(i < len){

        if(!array[i]){
            if(s == undefined){
                s = i;
                e = i;
            }else{
                e = i;
            }
            
            i++;
            continue;
        }
        
        if(s != undefined){
            array[s] = array[i];
            array[i] = 0;
            i--;
            
            if(s < e){
                s ++;
            }else{
                s = undefined;
                e = undefined;
            }
        }
        
        i++;
    }

    return array;
}

alert(moveZeros([0,1,4,0,0,0,2,2,2,2,2,0,0,10]))