[leetcode]528. Random Pick with Weight按權重挑選索引

阿新 • • 發佈：2018-10-24

bsp nta con str NPU prop [1] ons cal

Given an array w of positive integers, where w[i] describes the weight of index i, write a function pickIndex which randomly picks an index in proportion to its weight.

Note:

1 <= w.length <= 10000
1 <= w[i] <= 10^5
pickIndex will be called at most 10000 times.

Example 1:

Input: 
["Solution","pickIndex"]
[[[1]],[]]
Output: [null,0]

Example 2:

Input: 
["Solution","pickIndex","pickIndex","pickIndex","pickIndex","pickIndex"]
[[[1,3]],[],[],[],[],[]]
Output: [null,0,1,1,1,0]

Explanation of Input Syntax:

The input is two lists: the subroutines called and their arguments. Solution‘s constructor has one argument, the array w. pickIndex

has no arguments. Arguments are always wrapped with a list, even if there aren‘t any.

題目

思路

代碼

[leetcode]528. Random Pick with Weight按權重挑選索引

bsp nta con str NPU prop [1] ons cal Given an array w of positive integers, where w[i] describes the weight of index i, write a function

[LeetCode] Random Pick with Weight 根據權重隨機取點

Given an array w of positive integers, where w[i] describes the weight of index i, write a function pickIndex which randomly picks an index in proportion

528. Random Pick with Weight

pic turn int return arrays solution arc class 初始每個位置都是邊界二分法找 1 class Solution { 2 Random random = new Random(); //記得初始化 3

528. Random Pick with Weight - Medium

Given an array w of positive integers, where w[i] describes the weight of index i, write a function pickIndex wh

[Swift]LeetCode528. 按權重隨機選擇 | Random Pick with Weight

pic 輸入 let 隨機超過 earch with nts ons Given an array w of positive integers, where w[i] describes the weight of index i, write a function p

710. Random Pick with Blacklist - LeetCode

.get contains nta class ems 技術 length 隨機數範圍 Question 710. Random Pick with Blacklist Solution 題目大意：給一個N,表示一個範圍[0,N),給一個黑名單列表blacklist,其

[LeetCode] Random Pick with Blacklist 帶黑名單的隨機選取

sub struct argument orm nes tput inpu pic int Given a blacklist B containing unique integers from [0, N), write a function to return a

python leetcode 398. Random Pick Index

奇怪的是蓄水池抽樣演算法無法AC 程式碼2是蓄水池抽樣 class Solution(object): import random def __init__(self, nums): """ :type nums: List[int]

Random Pick with Blacklist

Given a blacklist B containing unique integers from [0, N), write a function to return a uniform random integer from [0, N) which is NOT i

leetcode--138. Copy List with Random Pointer

問題 pan copy clas leet cnblogs node title lin 1，問題描述 A linked list is given such that each node contains an additional random pointer whic

[leetcode]138. Copy List with Random Pointer復制帶有隨機指針的鏈表

leetcode () 一模一樣 spa pos 哈希表找到哈希 list public RandomListNode copyRandomList(RandomListNode head) { /* 深復制，就是不能只是復制原鏈表變量

Leetcode 138. Copy List with Random Pointer

cto 存儲空間行操作 return 映射 air and pre int /** * Definition for singly-linked list with a random pointer. * struct RandomListNode { *

[leetcode]138. Copy List with Random Pointer

138. Copy List with Random Pointer 方法一 Complexity O(n), Space O(n) 做一箇舊結點和新結點的對映，再連線 random 指向的舊結點的對映結點 # Definition for singly-linked list

python leetcode 138. Copy List with Random Pointer

考察對連結串列的操作，注意要把原連結串列恢復原樣 class Solution(object): def copyRandomList(self, head): """ :type head: RandomListNode :rty

leetcode 之 Copy List with Random Pointer

題目如下： A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.

【LeetCode】Copy List with Random Pointer 解題報告

【題目】 A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.

LeetCode-138-Copy List with Random Pointer

nod addition pan con code class div poi add 算法描述： A linked list is given such that each node contains an additional random pointer which

LeetCode-138.Copy List with Random Pointer(含有隨機指標的連結串列的拷貝)(複雜連結串列的拷貝)

含有隨機指標的連結串列的拷貝(複雜連結串列的拷貝) 題意方法一 : 使用HashMap儲存方法二 : 方法一的另一種寫法方法三 : O(1)的空間複雜度題目連結題意給出的連結串列的結

android weight（權重）的詳細分析

關註一段 sum 比例 .net orien 2個背景 wid 首先要明確權重分配的是那些空間？權重是依照比例分配屏幕的剩余空間對這句話不理解的能夠看下圖假如我們希望剩余的空間平分給空間1 和空間2 ，我們分別在2個控件的設置and

LeetCode HashTable 30 Substring with Concatenation of All Words

should pub str key integer ash arraylist nat character You are given a string, s, and a list of words, words, that are all of the same le

[leetcode]528. Random Pick with Weight按權重挑選索引

相關推薦