```
var kd=[
{
time:'9-12',
date:9,
yunn:[14]
},
{
time:'9-12',
date:9,
yunn:[]
},
{
time:'9-12',
date:9,
yunn:[15,18]
},
{
time:'9-12',
date:9,
yunn:[11,22,23]
},
];
var n=0;
for(var k=0;k<kd.length;k++){
n=n>kd[k].yunn.length?n:kd[k].yunn.length;
}
var end=[];
for(var k=0;k<n;k++){
let end_ls=[];
for(var i=0;i<kd.length;i++){
end_ls.push(kd[i].yunn[k]==undefined?"":kd[i].yunn[k]);
}
end.push(end_ls);
}
console.log(end);
console.log(JSON.stringify(end));
var end_=[
[14,"",15,11],
["","",18,22],
["","","",23]
];
```
