🌵706. Design HashMap
https://leetcode.com/problems/design-hashmap/
js
/**
* Initialize your data structure here.
*/
var MyHashMap = function() {
this.data = {}
}
/**
* value will always be non-negative.
* @param {number} key
* @param {number} value
* @return {void}
*/
MyHashMap.prototype.put = function(key, value) {
this.data[key] = value
}
/**
* Returns the value to which the specified key is mapped, or -1 if this map contains no mapping for the key
* @param {number} key
* @return {number}
*/
MyHashMap.prototype.get = function(key) {
return key in this.data ? this.data[key] : -1
}
/**
* Removes the mapping of the specified value key if this map contains a mapping for the key
* @param {number} key
* @return {void}
*/
MyHashMap.prototype.remove = function(key) {
delete this.data[key]
}
/**
* Your MyHashMap object will be instantiated and called as such:
* var obj = Object.create(MyHashMap).createNew()
* obj.put(key,value)
* var param_2 = obj.get(key)
* obj.remove(key)
*/py
class MyHashMap:
def __init__(self):
"""
Initialize your data structure here.
"""
self.data = {}
def put(self, key, value):
"""
value will always be non-negative.
:type key: int
:type value: int
:rtype: void
"""
self.data[key] = value
def get(self, key):
"""
Returns the value to which the specified key is mapped, or -1 if this map contains no mapping for the key
:type key: int
:rtype: int
"""
return self.data.get(key, -1)
def remove(self, key):
"""
Removes the mapping of the specified value key if this map contains a mapping for the key
:type key: int
:rtype: void
"""
if key in self.data:
del self.data[key]
# Your MyHashMap object will be instantiated and called as such:
# obj = MyHashMap()
# obj.put(key,value)
# param_2 = obj.get(key)
# obj.remove(key)