题解 | #根据包名，在指定空间中创建对象#

可以直接当成单链表做。

function namespace(oNamespace, sPackage) {
    let obj = sPackage.split('.');
    let curr = oNamespace;
    for (let x of obj){
        if (curr[x] !== undefined){
            curr = curr[x];
        } else {
            curr[x] = {};
            curr = curr[x];
        }
    }
    return oNamespace;
}