Can you solve this real interview question? Design HashMap - Design a HashMap without using any built-in hash table libraries. Implement the MyHashMap class: * MyHashMap() initializes the object with an empty map. * void put(int key, int value) inser
mp[key] = -1 } /** * Your MyHashMap object will be instantiated and called as such: * obj := Constructor(); * obj.Put(key,value); * param_2 := obj.Get(key); * obj.Remove(key); */ 题目链接: Design HashSet : leetcode.com/problems/d 设计哈希映射: leetcode-cn.com/...
Design a HashMap without using any built-in hash table libraries. Implement theMyHashMapclass: MyHashMap()initializes the object with an empty map. void put(int key, int value)inserts a(key, value)pair into the HashMap. If thekeyalready exists in the map, update the correspondingvalue. ...
MyHashMap hashMap = new MyHashMap(); hashMap.put(1,1); hashMap.put(2,2); hashMap.get(1); //返回1 hashMap.get(3); //返回-1(未找到) hashMap.put(2,1); //更新现有值 hashMap.get(2); //返回1 hashMap.remove(2); //删除2的映射 hashMap.get(2); //返回-1(未找到) 注意...
设计一个HashMap Solution: LinkedList 初始化ListNode[]nodes = new ListNode[10000]。 size = 10000是题意要求。 那么,该ListNode[] 每个元素的default值为null。 这也是HashMap相比HashTable的优势:HashMap允许key为null。 举例,put(2,4), 用hashCode()算出对应在ListNode[]nodes中的坐标 i = 2 ...
题目让我们设计一个 hashmap, 有put, get, remove 功能。 建立一个 int array, index 是key, 值是 value,具体看code。 Java Solution: Runtime: 76 ms, faster than 27.53% Memory Usage: 58.2 MB, less than 31.57% 完成日期:03/18/2019
Python内部的 HashMap 是 __hash__ 和__eq__; 最核心的问题之一就是解决 key 的冲突问题。 1 读题 2 解题思路 基于buckets 的静态数列来保存那些索引类似的键值对; bucket index = has code of key % bucket size; bucket size 可以修改为其它值,比如 10000. 3 Python 解法1 ## LeetCode 705E Leet...
要求不使用任何内置的hash table库设计一个HashMap。具体要求是:1)put函数能将一对(key, value)插入到HashMap,若已经有value,则进行更新;2)get函数能获得对应key的value,若不存在key,则返回-1;3)remove函数能在key存在的时候去除key以及key对应的value。可以将key和value分别设置为列表,put函数里对key的存在性先...
classMyHashMap{privateint[] hashMap;/** Initialize your data structure here. */publicMyHashMap(){this.hashMap=newint[1000001]; }/** value will always be non-negative. */publicvoidput(intkey,intvalue){ hashMap[key] = value+1;//存储真实值加 1}/** Returns the value to which the ...
Design a HashMap without using any built-in hash table libraries. Implement theMyHashMapclass: MyHashMap()initializes the object with an empty map. void put(int key, int value)inserts a(key, value)pair into the HashMap. If thekeyalready exists in the map, update the correspondingvalue....