338.

leetcode_位运算

268.缺失数字260.只出现一次的数字III190.颠倒二进制位不用额外变量交换两个整数231.2的幂342.4的幂693.交替位二进制数476.数字的补数371.两整数之和318.最大单词长度乘积338
糖糖rh·2020-07-09 21:08

338. Counting Bits

publicclassSolution{publicint[]countBits(intnum){intn[]=newint[num+1];intbase=1;n[0]=0;for(inti=1,t=0;i<=num;i++,t++){if(i==base){t=0;base*=2;}n[i]=n[t]+1;}returnn;}}
沉睡至夏·2020-07-01 14:34

[leetcode]338.比特数计位

给定一个非负整数num。对于0≤i≤num范围中的每个数字i，计算其二进制数中的1的数目并将它们作为数组返回。示例1:输入:2输出:[0,1,1]示例2:输入:5输出:[0,1,1,2,1,2]进阶:给出时间复杂度为O(n*sizeof(integer))的解答非常容易。但你可以在线性时间O(n)内用一趟扫描做到吗？要求算法的空间复杂度为O(n)。你能进一步完善解法吗？要求在C++或任何其他语言中
学姐你好高冷·2020-06-29 14:51

338. 比特位计数

题目给定一个非负整数num。对于0≤i≤num范围中的每个数字i，计算其二进制数中的1的数目并将它们作为数组返回。示例1输入:2输出:[0,1,1]示例2输入:5输出:[0,1,1,2,1,2]思路给定一个数n，就算0~n每个数二进制1的个数，保存在数组res中。有一个规律，如果k为奇数，那么k-1为偶数，那么k的二进制的最低位比k-1多一个1，即k二进制1的个数比k二进制个数大1。如果k为偶数，
PandaDou·2020-06-24 12:12

338. Counting Bits

classSolution(object):defcountBits(self,num):""":typenum:int:rtype:List[int]"""res=[0]foriinxrange(1,num+1):res.append((i&1)+res[i>>1])returnres
阿团相信梦想都能实现·2020-06-23 16:38

[Leetcode] 338 比特位计数

题目链接：[Leetcode]338.比特位计数题干给定一个非负整数num。对于0≤i≤num范围中的每个数字i，计算其二进制数中的1的数目并将它们作为数组返回。
闭门造折·2020-06-20 21:03

5.动态规划（五）

https://leetcode-cn.com/tag/dynamic-programming/题目汇总322.零钱兑换中等[✔]338.比特位计数中等343.整数拆分中等354.俄罗斯套娃信封问题困难
今天柚稚了么·2020-06-20 16:10

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].最好把数字全都列出来然后找规律
DrunkPian0·2020-04-13 02:13

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
HalcyonMoon·2020-04-10 10:28

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
我是你的果果呀·2020-04-09 18:10

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
Jeanz·2020-04-05 13:17

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].从[0,1,1,2]开始循环+
腹黑君·2020-03-29 07:10

陆、明辨__二、人情

群书治要360二、人情338.人有六情，失之则乱，从之则睦。故圣王之教其民也，必因其情，而节之以礼；必从其欲，而制之以义。义简而备，礼易而法，去情不远，故民之从命也速。
淡定之絕塵西歸·2020-03-16 22:17

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
caisense·2020-03-11 00:34

[LeetCode][Python]338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
bluescorpio·2020-03-02 00:33

338. Counting Bits

基础解法：时间复杂度O(n*sizeof(int))classSolution{public:intcalOne(unsignedn){intresult=0;while(n){if(n&1)result++;n=n>>1;}returnresult;}vectorcountBits(intnum){vectorresult;if(numcountBits(intnum){vectorresult
汇芳书院·2020-02-24 14:48

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Idea:Findthepat
a_void·2020-02-20 02:58

Leetcode解题报告——338. Counting Bits

题目要求:Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2]大概题意:给定一个正整
Jarryd·2020-02-18 08:23

LeetCode笔记：338. Counting Bits

问题：Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Iti
Cloudox_·2020-02-17 20:34

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
exialym·2020-02-10 03:42

338.读书2~哈利波特与被诅咒的孩子2

2017.01.11《哈利波特与被诅咒的孩子》第一部分，第一幕阿不思、斯科皮、罗丝来到了霍格沃兹，分院帽开始工作。罗丝进入了格莱芬多。斯科皮不出意外地进入了斯莱特林。阿不思也被分入斯莱特林，全场人寂静无声。场景转换到霍琦女士的飞行课，要求大家把手伸到扫把上，喊“起来”。罗丝的扫把第一个飞起来，而阿不思却是最后一面，完全不像当年他父亲那样。转眼间，一年过去，又到了哈利波特送阿不思来火车站了。阿不思不
摹喵居士·2019-11-05 13:14

LeetCode Top 100 Liked Questions 338. Counting Bits (Java版; Medium)

welcometomyblogLeetCodeTop100LikedQuestions338.CountingBits(Java版;Medium)题目描述Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandret
littlehaes·2019-10-20 18:16

李宏毅 机器学习 回归demo代码

李宏毅机器学习回归demo李宏毅老师的课件里没有附上回归demo的code，经过整理后如下：importnumpyasnpimportmatplotlib.pyplotaspltx_data=[338.
regina_2019·2019-07-28 11:10

338. Counting Bits(DP)

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example1:Input:2Output:[0,1,1]Example2:Input:5Output:[0,1,1,
did_you·2019-07-05 09:14

leetcode题解

62.不同路径121.买卖股票的最佳时机146.LRU缓存机制152.乘积最大子序列172.阶乘后的零174.地下城游戏198.打家劫舍213.打家劫舍II234.回文链表303.区域和检索-数组不可变338
_kean·2019-04-16 12:10

LeetCode 338. 比特位计数(Golang)

给定一个非负整数num。对于0≤i≤num范围中的每个数字i，计算其二进制数中的1的数目并将它们作为数组返回。示例1:输入:2输出:[0,1,1]示例2:输入:5输出:[0,1,1,2,1,2]进阶:给出时间复杂度为O(n*sizeof(integer))的解答非常容易。但你可以在线性时间O(n)内用一趟扫描做到吗？要求算法的空间复杂度为O(n)。你能进一步完善解法吗？要求在C++或任何其他语言中
李柏林·2018-10-11 23:05

leetcode 338. Counting Bits

题目要求Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:It
raledong·2018-03-25 00:00

338. Counting Bits(动态规划）

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1’sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
A_Little_Nut·2018-01-21 10:34

338. Counting Bits（计算整数二进制表示中1的位数）

Givenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:For num=5 youshouldreturn [0,1,1,2,1,2].Followu
xiangwanpeng·2016-11-07 13:00

leetCode 338. Counting Bits | Dynamic Programming | Medium

338.CountingBitsGivenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2]
313119992·2016-09-01 18:33

338. Counting Bits

338.CountingBitsGivenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1’sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2]
NNNNNNNNNNNNY·2016-06-04 16:00

Middle-题目130：338. Counting Bits（增补2）

题目原文：Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1’sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].题目大意：输入一个正
cmershen·2016-05-31 20:00

[LeetCode]338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5,youshouldreturn[0,1,1,2,1,2].题目给定一个非负整数num，
Eazow·2016-05-28 17:41

338. Counting Bits

Givenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:For num=5 youshouldreturn [0,1,1,2,1,2].Followu
Mtchy·2016-05-11 17:00

Leetcode 338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1’sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
xinyuehuixin·2016-05-08 11:00

338. Counting Bits 数字的二进制中1的个数

Givenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:For num=5 youshouldreturn [0,1,1,2,1,2].Followu
u010005161·2016-05-07 21:00

leetcode 338. Counting Bits

分析打算用动态规划，所以先找x和x-1的规律：011011100101110111100010011010101001010010110100101001101111000f(x)表示x二进制表示中1的个数，m表示从右往左第一个0的位置（从0开始计数）。找数字x-1从右往左第一个0的位置m；f(x)=f（x-1）-m+1；我们认为7这样的数字的二进制表示中没有0，如果x-1的二进制表示中没有找到0
u010902721·2016-04-14 19:00

LeetCode 338. Counting Bits

比较容易想到的就是一个个数拿出来判断有几个1，判断时可以采用n&(n-1)来简化过程，不过时间复杂度明显就是O(n*sizeof(integer)).。此外可以采用动态规划来做，对于一个大于1的整数，其二进制至少有2位，假设是n位，可以把它分成前（n-1）位和最后1位分别统计。classSolution{ public: vectorcountBits(intnum){ vectorcnt(num
xl2432·2016-04-14 18:00

[leetcode] 338. Counting Bits 解题报告

题目链接: https://leetcode.com/problems/counting-bits/Givenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Examp
qq508618087·2016-04-13 08:00

338. Counting Bits

想到了两种解法：（1）参照的是10进制数转换为2进制数的计算过程，代码如下：classSolution{ public: vectorcountBits(intnum){ vectorcounts; for(inti=0;icountBits(intnum){ vectorcounts; for(inti=0;i>1; } counts.push_back(count); } returncoun
qq_20581563·2016-04-06 19:00

338. Counting Bits

Givenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:For num=5 youshouldreturn [0,1,1,2,1,2].首先，直接移动
a342500329a·2016-03-30 00:00

338. Counting Bits

TotalAccepted: 7119 TotalSubmissions: 12947 Difficulty: MediumGivenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasa
EbowTang·2016-03-26 12:00

338. Counting Bits

TotalAccepted: 7119 TotalSubmissions: 12947 Difficulty: MediumGivenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasa
EbowTang·2016-03-26 12:00

【LeetCode】338. Counting Bits (2 solutions)

CountingBitsGivenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:For num=5 youshouldreturn [0,1,1,2,
陆草纯·2016-03-24 19:00

338. Counting Bits

Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Itisve
qdqade·2016-03-23 16:54

leetcode 338. Counting Bits

Givenanonnegativeintegernumber num.Foreverynumbers i intherange 0≤i≤num calculatethenumberof1'sintheirbinaryrepresentationandreturnthemasanarray.Example:For num=5 youshouldreturn [0,1,1,2,1,2].Followu
u014568921·2016-03-21 21:00

Leet Code OJ 338. Counting Bits [Difficulty: Medium]

题目：Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1’sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Iti
Lnho2015·2016-03-18 18:00

Leet Code OJ 338. Counting Bits [Difficulty: Medium]

题目：Givenanonnegativeintegernumbernum.Foreverynumbersiintherange0≤i≤numcalculatethenumberof1’sintheirbinaryrepresentationandreturnthemasanarray.Example:Fornum=5youshouldreturn[0,1,1,2,1,2].Followup:Iti
Lnho2015·2016-03-18 18:00
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