首先说一下HashMap存储结构,数组.链表.树这三种数据结构形成了hashMap.存储结构下图所示,根据key的hash与table长度确定table位置,同一个位置的key以链表形式存储,超过一定限制链表转为树.数组的具体存取规则是tab[(n-1) & hash],其中tab为node数组,n为数组的长度,hash为key的hash值. //链表中数据的临界值,如果达到8,就进行resize扩展,如果数组大于64则转换为树. static final int TREEIFY_THRESHO…
(function($, h, c) { var a = $([]), e = $.resize = $.extend($.resize, {}), i, k = "setTimeout", j = "resize", d = j + "-special-event", b = "delay", f = "throttleWindow"; e[b] = 250; e[f] = true; $.event.s…
EKF relies on a linearisation of the evolution and observation functions which are good approximations of the original functions if these functions are close to linear. The state-space formulation of EKF reads : Non-linear evolution and observation f…