如何生成一組數據不連續(xù)排列的數組

var arr = '11222333456'.split('');
var obj = {},maxlength;
var newString = '';
for(let key in arr){
    let value = arr[key];
    obj[value] = obj[value]? ++obj[value] : 1;
}
for(let key in obj){
    maxlength = maxlength? (maxlength > obj[key] ? maxlength : obj[key]) : obj[key];
}
for(let i = 0; i < maxlength; i++){
    for(let key in obj){
    let count = obj[key];
    if(count > 0){
        newString +=key;
        obj[key]--;
    }
}
}
console.log(newString) 

//12345612323

不知道是不是你要的