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Stairs
【leetcode】Climbing
Stairs
(easy)
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 跳台阶,之前写过递归的,这次
·
2015-10-27 15:28
LeetCode
[LeetCode] Climbing
Stairs
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 解题思路: 简单的递归,ways[n] =
·
2015-10-27 15:47
LeetCode
Climbing
Stairs
爬楼梯问题,每次可以走1或2步,爬上n层楼梯总方法 (变相fibonacci)
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 当n=1时,有1种方法,即直接走1步 当n
·
2015-10-23 08:48
fibonacci
[Leetcode] Climbing
Stairs
Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?题意:台阶总数为n,每次爬1阶或者2阶层,求爬完台阶的不同的方法数。第一次爬1阶,则剩下n-1阶;第一次爬2阶,则剩下n-2阶;递推表达式为
Javasus
·
2015-10-21 18:10
Leetcode
Leetcode:Climbing
Stairs
斐波那契数
戳我去解题 You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 解析:设直至第n层有f(n
·
2015-10-21 13:01
LeetCode
[leedcode 70] Climbing
Stairs
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? public class Solution
·
2015-10-21 12:37
code
20.Climbing
Stairs
Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?分析:f(n)=f(n-1)+f(n-2)。方法一:看到这题目之后第一反应是用递归的方法做。/** *递归的思想做f(n)=f(n-1)
u010339647
·
2015-10-18 10:00
LeetCode -- Climbing
Stairs
题目描述:Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?就是有n阶楼梯,求出不同上法的次数,每次只能上1或2阶楼梯。要求上楼梯的情况数,即求下楼梯的情况数,即对于n阶楼梯的下楼情况数来说
csharp25
·
2015-10-17 00:00
leetcode 70.Climbing
Stairs
-爬楼梯|动态规划
原题链接:70.ClimbingStairs【思路】题目提示动态规划。我们知道第n阶只与第n-1阶和第n-2阶有关,关系为ways[n]=ways[n-1]+ways[n-2],存储的时候只需要2个存储单元,本题用ways[0]存n-2阶的走法数,ways[1]存储n-1阶走法数:publicclassSolution{ publicintclimbStairs(intn){ int[]w
Code_Granker
·
2015-10-07 13:01
LeetCode
Climbing
Stairs
| leetcode 70 【Java解题报告】
原题链接:70.ClimbingStairs【思路】题目提示动态规划。我们知道第n阶只与第n-1阶和第n-2阶有关,关系为ways[n]=ways[n-1]+ways[n-2],存储的时候只需要2个存储单元,本题用ways[0]存n-2阶的走法数,ways[1]存储n-1阶走法数:publicclassSolution{ publicintclimbStairs(intn){ int
happyaaaaaaaaaaa
·
2015-10-07 13:00
java
LeetCode
动态规划
leetcode笔记:Climbing
Stairs
(斐波那契数列问题)
一.题目描述Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?题目的大意是,已知有n阶楼梯,每次只能爬1阶或2阶楼梯,问爬到第n阶楼梯共有几种爬法-_-||。题目可以看成是,设f(n)表示爬
liyuefeilong
·
2015-09-16 00:00
LeetCode
Algorithm
C++
fibonacci
LeetCode----Climbing
Stairs
ClimbingStairsYouareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?分析:简单的爬楼梯问题,如果这算DP题的话,那这应该是我见过的最简单DP题了。令f[i]表示到第i个楼梯时不
whiterbear
·
2015-09-15 23:00
LeetCode
python
dp
Climbing
Stairs
原题链接在这里:https://leetcode.com/problems/climbing-
stairs
/题目:Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop
Dylan_Java_NYC
·
2015-09-11 09:00
LeetCode(70) Climbing
Stairs
题目Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?分析这个题目是一个计算n层阶梯情况下,走到顶端的路径种数(要求每次只能上1层或者2层阶梯)。这是一个动态规划的题目:n=1时ways=1
逆風的薔薇
·
2015-08-19 21:20
LeetCode
&
LintCode
LeetCode(70) Climbing
Stairs
题目Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?分析这个题目是一个计算n层阶梯情况下,走到顶端的路径种数(要求每次只能上1层或者2层阶梯)。这是一个动态规划的题目:n=1时ways=1
fly_yr
·
2015-08-19 21:00
LeetCode
【LeetCode-面试算法经典-Java实现】【073-Climbing
Stairs
(爬楼梯)】
【073-ClimbingStairs(爬楼梯)】【LeetCode-面试算法经典-Java实现】【所有题目目录索引】原题Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?题目大意你正在爬一
derrantcm
·
2015-08-03 07:37
LeetCode
LeetCode
【LeetCode-面试算法经典-Java实现】【073-Climbing
Stairs
(爬楼梯)】
【073-ClimbingStairs(爬楼梯)】【LeetCode-面试算法经典-Java实现】【所有题目目录索引】原题Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?题目大意你正在爬一
derrantcm
·
2015-08-03 07:37
LeetCode
LeetCode
【LeetCode-面试算法经典-Java实现】【073-Climbing
Stairs
(爬楼梯)】
【073-ClimbingStairs(爬楼梯)】【LeetCode-面试算法经典-Java实现】【所有题目目录索引】原题Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?题目大意你正在爬一
DERRANTCM
·
2015-08-03 07:00
java
算法
面试
offer
爬楼梯
【LeetCode-面试算法经典-Java实现】【073-Climbing
Stairs
(爬楼梯)】
【073-ClimbingStairs(爬楼梯)】【LeetCode-面试算法经典-Java实现】【所有题目目录索引】原题Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?题目大意你正在爬一
DERRANTCM
·
2015-08-03 07:00
java
算法
面试
offer
爬楼梯
[leetcode 70]Climbing
Stairs
Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?爬台阶,你每次可以上一层或者两层,问上n层你共有多少何种方法f(n)=f(n-1)+f(n-2)动规,记得保存n-1和n-2的结果,直接
ER_Plough
·
2015-08-01 19:00
LeetCode
C++
dp
Stairs
Climbing
Dreamoon and
Stairs
A.DreamoonandStairstimelimitpertest1secondmemorylimitpertest256megabytesinputstandardinputoutputstandardoutputDreamoonwantstoclimbupastairof n steps.Hecanclimb 1 or 2 stepsateachmove.Dreamoonwantsthen
S_Black
·
2015-07-24 19:00
codeforces
水水更健康
LeetCode#70 Climbing
Stairs
Problem Definition: You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? Sol
·
2015-07-23 19:00
LeetCode
[LeetCode] Climbing
Stairs
Note: If you feel unwilling to read the long codes, just take the idea with you. The codes are unnecessarily long due to the inconvenient handle of matrices. Well, a classic and interesting problem.
·
2015-07-15 00:00
LeetCode
华为java机试题整理(二)
题1在
Stairs
函数中实现该功能:一个楼梯有N阶,从下往上走,一步可以走一阶,也可以走两阶,有多少种走法?(0例如3阶楼梯有3种走法:1
瓶子459
·
2015-06-29 13:00
java
测试
java
校园招聘
Climbing
Stairs
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? public class S
hcx2013
·
2015-06-28 22:00
bing
LeetCode70:Climbing
Stairs
Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?设到第i台阶有A[i]那么到第1台阶有A[1]=1种方法那么到第2台阶有A[2]=2种方法那么到第3台阶有A[3]=A[1]+A[2]=
u012501459
·
2015-06-14 23:00
Leetcode[70]-Climbing
Stairs
Link:https://leetcode.com/problems/climbing-
stairs
/Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop
Dream_angel_Z
·
2015-06-14 12:00
LeetCode
dp
动态规划
斐波那契
走阶梯
leetcode Climbing
Stairs
题目链接这里这是我第一个超时需要算法的程序。使用的是有记录的动态规划问题。publicclassSolution{ publicstaticintrecords[]; publicstaticintclimbStairs(intn){ records=newint[n+1]; Arrays.fill(records,0); for(inti=1;i<=n;i++) { process(i)
bleuesprit
·
2015-06-08 15:00
leetcode--Climbing
Stairs
Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?publicclassSolution{ publicintclimbStairs(intn){ if(n==1)return1; int[
kangaroo835127729
·
2015-06-05 13:00
LeetCode - Climbing
Stairs
Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?Solution:状态转移方程:f(n)=f(n-1)+f(n-2),等等,这不就是斐波那契数列吗?!那我们就用不着数组了。public
yuanhisn
·
2015-05-28 09:00
2.1.17 Climbing
Stairs
Notes:Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?Solution:Climeonestepfromlaststairorclime2stepsfromthelastlastst
ZhikangFu
·
2015-05-12 16:00
Leetcode#70Climbing
Stairs
Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?分析,该问题类似于斐波那契序列问题,直观上采用递归来做,f(n)=f(n-1)+f(m-2),然而时间复杂度太大,因此类似问题可以采用动
谧晦
·
2015-04-30 10:10
动态
public
Either
leetcode 70 Climbing
Stairs
ClimbingStairs Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?HideTagsDynamicProgramming这个题面试题还
wangyaninglm
·
2015-04-29 17:00
Algorithm
LeetCode
C++
动态规划
Climbing
Stairs
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 题目意思 : n步到达,每次
kainever7
·
2015-04-22 11:00
bing
Leetcode - Climbing
Stairs
[题目] You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? [分析] 一维动态规划入门题
likesky3
·
2015-04-10 10:00
leetcode || 70、 Climbing
Stairs
problem:Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?HideTags DynamicProgramming题意:爬上一个n阶的楼梯,每次爬一阶或者两阶,求一共有多少不同的方
hustyangju
·
2015-04-08 10:00
LeetCode
dp
leetcode_Climbing
Stairs
描述:Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?思路:变形的斐波那契代码:publicintclimbStairs(intn){ if(n<3) returnn; intarr[
dfb198998
·
2015-04-04 20:00
LeetCode
斐波那契数列
Stairs
Climbing
leetcode:Climbing
Stairs
classSolution{ public: intclimbStairs(intn){ vectortable; table.push_back(0); table.push_back(1); table.push_back(2); if(n<=2) returntable[n]; for(inti=3;i<=n;i++) { table.push_back(table[i-1]+table[i
majing19921103
·
2015-04-03 21:00
LeetCode
C++
动态规划
Climbing
Stairs
Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?这道题其实考的就是青蛙跳台阶的问题,本质是斐波那契数列。f(n+2)=f(n)+f(n+1).C++AC代码如下:classSolution
guang09080908
·
2015-04-03 11:00
斐波那契数列
[leetcode]41 Climbing
Stairs
题目链接:https://leetcode.com/problems/climbing-
stairs
/Runtimes:2ms1、问题Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop
shawjan
·
2015-03-31 10:00
LeetCode
Stairs
Climbing
Climbing
Stairs
题目链接:ClimbingStairsYouareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?这道题的要求是爬n阶楼梯,每次只可以爬1步或2步,总共有多少种不同方法能爬到顶?动态规划,假设要爬到第
makuiyu
·
2015-03-19 21:00
LeetCode
C++
动态规划
Climbing
Stairs
/*****ClassNameClimbingStairs***DescriptionYouareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.*Inhowmanydistinctwayscanyouclimbtothetop?***@authorTKPadwangx89@126
shijiebei2009
·
2015-03-19 21:00
爬楼的算法问题(N个台阶每次最多爬M阶)
package com.bjs.test; public class
Stairs
{ /** * @author Cxl * @version
疯狂的兔子
·
2015-03-15 10:00
Climbing
Stairs
https://leetcode.com/problems/climbing-
stairs
/Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop
u011403655
·
2015-03-09 22:00
LeetCode
dp
LeetCode-Climbing
Stairs
答案和fibnacci数列一样,最简单的dp首先不要用一个array存,只存当前两个数就可以其次注意边界条件n<=0n=1n=2publicclassSolution{ publicintclimbStairs(intn){ intfirst=1; intsecond=1; for(inti=2;i<=n;i++){ intcur=first+second; first=second; secon
bsbcarter
·
2015-03-08 10:00
Climbing
Stairs
Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop? publicintclimbStairs(intn){ }Tag:DynamicProgramming解析:你在爬楼梯,需要n步到
chen52671
·
2015-03-06 23:00
算法
Climbing
Stairs
Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?经典DP问题:可以参考http://www.csie.ntnu.edu.tw/~u91029/DynamicProgramming.ht
myself9711
·
2015-02-16 06:00
LeetCode
python
dp
LeetCode70——Climbing
Stairs
Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?难度系数:容易实现intclimbStairs(intn){ if(n<=2){ returnn; }else{ int*step=newi
booirror
·
2015-02-11 15:00
LeetCode
dp
LeetCode-Climbing
Stairs
(爬楼梯问题)
Youareclimbingastaircase.Ittakesnstepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?第一反应,递归求解,貌似很简单。但是不幸,超时publicintclimbStairs1(intn){if(n==1||n==2){retu
zydoer
·
2015-02-05 20:40
Algorithms
LeetCode
动态规划
LeetCode-Climbing
Stairs
(爬楼梯问题)
Youareclimbingastaircase.Ittakes n stepstoreachtothetop.Eachtimeyoucaneitherclimb1or2steps.Inhowmanydistinctwayscanyouclimbtothetop?第一反应,递归求解,貌似很简单。但是不幸,超时publicintclimbStairs1(intn){ if(n==1||n==2){
My_Jobs
·
2015-02-05 20:00
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