hashmap

来源： https://stackoverflow.com/questions/45102468/intuition-behind-storing-sum-and-frequency-in-the-hashmap

来源： https://stackoverflow.com/questions/45102468/intuition-behind-storing-sum-and-frequency-in-the-hashmap

来源： https://stackoverflow.com/questions/44745811/why-hashmap-resize-in-case-of-collision-or-worst-case

来源： https://stackoverflow.com/questions/44745811/why-hashmap-resize-in-case-of-collision-or-worst-case

来源： https://stackoverflow.com/questions/48603244/why-is-a-hash-table-lookup-only-o1-time-when-searching-for-a-key-is-on

来源： https://stackoverflow.com/questions/48603244/why-is-a-hash-table-lookup-only-o1-time-when-searching-for-a-key-is-on

来源： https://stackoverflow.com/questions/48603244/why-is-a-hash-table-lookup-only-o1-time-when-searching-for-a-key-is-on

问题 Hi I want to secure my web url and app secret keys through Ndk, I want to create hashmap in app and also store key values statically then parse to java, I follow Stackoverflow answer like Create HashMap also JNI passing objects from C++ to Java some method deprecated from above link and didn't find any way to do this, I created HashMap but it giving me error #include <jni.h> extern "C" JNIEXPORT jobject Java_com_company_project_home_ui_MainActivity_getUrlMap( JNIEnv *env, jobject /* this */)

问题 Imagine a situation like this: I have a HashMap<Integer, String> , in which I store the connected clients. It is HashMap , because the order does not matter and I need speed. It looks like this: { 3: "John", 528: "Bob", 712: "Sue" } Most of the clients disconnected, so this is why I have the large gap. If I want to add a new client, I need a key and obviously the usage of _map.size() to get a key is incorrect. So, currently I use this function to get he lowest available key: private int

问题 Imagine a situation like this: I have a HashMap<Integer, String> , in which I store the connected clients. It is HashMap , because the order does not matter and I need speed. It looks like this: { 3: "John", 528: "Bob", 712: "Sue" } Most of the clients disconnected, so this is why I have the large gap. If I want to add a new client, I need a key and obviously the usage of _map.size() to get a key is incorrect. So, currently I use this function to get he lowest available key: private int