Polish

【LeetCode】Evaluate Reverse Polish Notation 解题报告

【题意】计算逆波兰表达式（又叫后缀表达式）的值。例如：["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5","/","+"]->(4+(13/5))->6【思路】用一个栈存储操作数，遇到操作数直接压入栈内，遇到操作符就把栈顶的两个操作数拿出来运算一下，然后把运算结果放入栈内。【Java代码】publicclassSolution{ publicinte
ljiabin·2014-08-28 20:00

LeetCode 2 Evaluate Reverse Polish Notation

EvaluatethevalueofarithmeticexpressioninReversePolishNotation.Validoperatorare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9["4","13","5","/","+"
ustc_summer·2014-08-16 10:00

[leetcode] Evaluate Reverse Polish Notation

EvaluateReversePolishNotation使用递归classSolution{ public: boolis_operator(conststring&op){ returnop.size()==1&&string("+-*/").find(op)!=string::npos;//是否为操作符 } intevalRPN(vector&tokens){ intx,y; autoto
lydyangliu·2014-08-14 00:00

LeetCode_150evalRPN [Evaluate Reverse Polish No..]

#include #include #include #include #include usingnamespacestd; classSolution{ public: //参考：http://zh.wikipedia.org/wiki/逆波兰表示法即可 intevalRPN(vector&tokens){ stackstk; for(inti=0;i1||isdigit(ch)) stk.
貉子·2014-08-13 16:00

Evaluate Reverse Polish Notation

EvaluateReversePolishNotation TotalAccepted: 17802 TotalSubmissions: 90675MySubmissionsEvaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeani
nan327347465·2014-07-22 09:00

LeetCode 题目总结

题目总结转载来自豆瓣：http://www.douban.com/note/330562764/利用堆栈：http://oj.leetcode.com/problems/evaluate-reverse-polish-notation
cfreezhan·2014-07-16 11:37

leetcode Evaluate Reverse Polish Notation(*)

EvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Someexamples: ["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5","/
star_liux·2014-07-15 21:00

[LeetCode] Evaluate Reverse Polish Notation

题目链接intevalRPN(vector&tokens){ vectorvals; for(inti=0;i>val; vals.push_back(val); } } returnvals.back(); }string数字串转换成int的方法：#include usingnamespacestd; stringstreamstream; stringstr="-123"; stream>v
HQBUPT·2014-07-07 11:00

Java Evaluate Reverse Polish Notation(逆波兰表达式)

表达式:：["2","1","+","3","*"]->((2+1)*3)->9  ["4","13","5","/","+"]->(4+(13/5))->6题目大意：给定一个逆波兰表达式，求该表达式的值思路：由于逆波兰表达式本身不需要括号来限制哪个运算该先进行，因此可以直接利用栈来模拟计算：遇到操作数直接压栈，碰到操作符直接取栈顶的2个操作数进行计算（注意第一次取出来的是右操作数），然后再把计算
soszou·2014-07-05 16:00

【leetcode】：Evaluate Reverse Polish Notation （python）

逆波兰式的求解，建立一个类栈容器，遍历给定的逆波兰表达式，遇到数字就push，遇到操作符就进行出栈，连续出两次，因为给定的四则运算符都是双目的，这里注意下这两个操作数的先后顺序，因为对于加法和乘法没关系，但是对于减法和除法是有先后关系的。然后进行相应的运算，将结果push进栈中。这里附带说明下python中进行除法运算与c，java系列中的除法的不同，就是向下取整的问题。这种不同表现在两个操作数符
shiquxinkong·2014-07-04 17:00

LeetCode: Evaluate Reverse Polish Notation [150]

【题目】Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13
HarryHuang1990·2014-07-01 19:00

[LeetCode]Evaluate Reverse Polish Notation

Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5
sbitswc·2014-06-30 23:00

leetcode 144: Evaluate Reverse Polish Notation

EvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5","/"
xudli·2014-06-24 08:00

[LeetCode] Evaluate Reverse Polish Notation [2]

题目Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13",
swagle·2014-06-03 11:00

[leetcode]Evaluate Reverse Polish Notation @ Python

原题地址：https://oj.leetcode.com/problems/evaluate-reverse-polish-notation/ 题意： Evaluate the value
·2014-05-30 09:00

Evaluate Reverse Polish Notation

后缀表达式。1.用一个stack维护数字栈，每碰到一个数字都将其压入栈中2.碰到操作符便将其弹出，同时弹出数字栈中的两个数字，再将计算结果压回栈中。3.最终栈顶元素即为所求代码：inlineboolis_opeartor(conststring&c) { returnc.size()==1&&(c[0]=='+'||c[0]=='-'||c[0]=='*'||c[0]=='/'); } inli
u014674776·2014-05-29 06:00

【LeetCode】Evaluate Reverse Polish Notation

EvaluateReversePolishNotation TotalAccepted:11741TotalSubmissions:60315MySubmissionsEvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeror
u013027996·2014-05-06 17:00

Evaluate Reverse Polish Notation

Evaluate Reverse Polish Notation 题目链接：http://oj.leetcode.com/problems/evaluate-reverse-polish-notation
·2014-05-05 10:00

LeetCode_Evaluate Reverse Polish Notation

EvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9["4","13","5","/",
loveRooney·2014-05-05 06:00

[LeetCode]Evaluate Reverse Polish Notation, 解题报告

前言昨天终于项目完成，历时一个多月的时间，解决了Android上内存泄露和各种ANR问题，今天终于有时间写点ACM题目了。题目EvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Som
zinss26914·2014-04-18 10:00

LeetCode Reverse Polish Notation求逆波兰表达式值

publicclassSolution{ publicstaticintevalRPN(String[]tokens) { Stackstack=newStack(); StringoperatorsString="+-*/"; for(inti=0;i
daer520·2014-04-15 14:00

(leetcode)Evaluate Reverse Polish Notation

Question:Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4
zhangyuehuan·2014-04-14 09:00

LeetCode – Evaluate Reverse Polish Notation

Theproblem:EvaluatethevalueofanarithmeticexpressioninReversePolishNotation. Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression. Someexamples: ["2","1","+","3","*"]->((2+1)*3)->9 [
whywhom·2014-04-14 08:00

[LeetCode]Evaluate Reverse Polish Notation

classSolution{ public: intevalRPN(vector&tokens){ stacknumStack; //foreachtokeninthetokens for(inti=0;i
sunbaigui·2014-04-10 22:00

leetcode Evaluate Reverse Polish Notation(计算逆波兰表达式)

题目要求：Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","1
lqcsp·2014-04-02 05:00

leetcode之Evaluate Reverse Polish Notation

补充知识——前缀，中缀，后缀表达式的含义以及用计算几如何求前缀和后缀表达式的值。见我的收藏——“前缀、中缀、后缀表达式”。做题思路：1,ReversePolishNotation是后缀表达式2,根据收藏的文章，该算法用到的主要数据结构是栈。 前缀表达式的计算机求值：从右至左扫描表达式，遇到数字时，将数字压入堆栈，遇到运算符时，弹出栈顶的两个数，用运算符对它们做相应的计算（栈顶元素op次顶元素），并
zhanghaodx082·2014-03-31 20:00

LeetCode problem 2: Evaluate Reverse Polish Notation

思路：碰到符号从数据栈中取两个数计算，再将计算结果压入数据栈中，最后得到的数据栈栈顶就是所求的结果。classSolution{ public: intevalRPN(vector&tokens){ stacknum; inta,b,c; for(vector::iteratorit=tokens.begin();it!=tokens.end();it++){ if("+"==*it||"*"==
AIvin24·2014-03-30 22:00

计算逆波兰式 Evaluate Reverse Polish Notation

问题：Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13"
luckyjoy521·2014-03-24 09:00

Reverse Polish Calculator （逆波兰计算器）方案的分析——如何解决问题，从需要到实现

 ReversePolishCalculator（逆波兰计算器）方案的分析——如何解决问题，从需要到实现分类： 【这就是C】2013-09-0423:28 262人阅读 评论(0) 收藏 举报逆波兰计算器cReversePolishCalculator（逆波兰计算器）方案的分析——如何解决问题，从需要到实现注：文章素材来源于K&R第二版需要实现的功能：（针对用户的期望）1、基本的四则运算2、取模运
pi9nc·2014-03-23 09:00

【LeetCode】Evaluate Reverse Polish Notation

EvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5","/"
xiaozhuaixifu·2014-03-16 10:00

Evaluate Reverse Polish Notation -- LeetCode

原题链接: http://oj.leetcode.com/problems/evaluate-reverse-polish-notation/ 这道题是逆波兰式的求解，不了解逆波兰式的朋友可以参考一下逆波兰表示法
linhuanmars·2014-03-13 21:00

python整除问题-leetcode-Evaluate Reverse Polish Notation

python的除法很特殊，和java以及c++不同，如果除数与被除数符号相同，那么结果是一样的，取下整。但是当符号不同时，python还是向下取整，比如真是结果是-0.1，python得出的结果是-1，二java以及c++得出的是0leetcode-EvaluateReversePolishNotation这题就是这种情况，如果用python实现，必须要特殊处理除法的情况。   if(v1*v2<
huangbingliang·2014-03-02 16:00

Leetcode Evaluate Reverse Polish Notation

EvaluateReversePolishNotation TotalAccepted: 5898 TotalSubmissions: 31322MySubmissionsEvaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanin
kenden23·2014-03-02 08:00

[LeetCode] Evaluate Reverse Polish Notation

题目：http://oj.leetcode.com/problems/evaluate-reverse-polish-notation/EvaluateReversePolishNotation TotalAccepted
copica·2014-02-21 00:00

【算法决】Evaluate Reverse Polish Notation

Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5
s003603u·2014-02-20 15:00

Evaluate Reverse Polish Notation

Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5
a342500329a·2014-02-03 00:00

LeetCode OJ:Evaluate Reverse Polish Notation

EvaluateReversePolishNotation TotalAccepted: 3892 TotalSubmissions: 20348MySubmissionsEvaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanin
starcuan·2014-01-19 20:00

Leetcode: Evaluate Reverse Polish Notation

Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5
u013166464·2014-01-03 19:00

Evaluate Reverse Polish Notation

逆波兰式就是二叉树树后根遍历的结果，逆波兰式在借助栈进行算式运算的时候一个很好的优势就是不用比较栈顶操作符的优先级，操作过程很简单：1）若是操作数，入栈2）若是操作符，就像扁担挑水一样，在栈里挑出两个数进行运算(注意第一操作数和第二操作数)，将结果作为操作数再次压入栈中，重复操作，直到表达式末尾。//["4","13","5","/","+"]->(4+(13/5))->6 /*+ | /\ 4/
shiquxinkong·2014-01-02 14:00

Leetcode: Evaluate Reverse Polish Notation

Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5
violet_program·2013-12-31 03:00

LeetCode | Evaluate Reverse Polish Notation

题目：Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13"
lanxu_yy·2013-12-17 11:00

LeetCode—Evaluate Reverse Polish Notation解题报告

转载请注明：http://blog.csdn.net/ict2014/article/details/17351145原题如下：题目解析：   简单明了的一句话就是：求解算术表达式的值。最经典的做法就是使用栈来解决此种问题。对于此道题目，我们使用一个“操作数栈”保存操作数，当遇到“操作符”的时候，就从栈中pop出两个元素，进行计算，然后将结果push至“操作数栈”中，然后继续进行扫描即可。最终“操
u013011270·2013-12-16 13:00

Evaluate Reverse Polish Notation 求RPN的值@LeetCode

用一个Stack就很容易做到了，这道题的最大发现是：这道题是2013-11-27发布出来的，到今天，短短半个月内，居然提交量快到了1万！！！居然有这么多人都在刷题！！压力山大！packageLevel3; importjava.util.Stack; /** * *EvaluateReversePolishNotation * *Evaluatethevalueofanarithmeticex
hellobinfeng·2013-12-15 09:00

LeetCode 题解（2）：Evaluate Reverse Polish Notation

题目：EvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5",
u011029779·2013-12-08 17:00

Leetcode: Evaluate Reverse Polish Notation

Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5
doc_sgl·2013-12-03 21:00

leetcode-Evaluate Reverse Polish Notation

Evaluatethevalueofanarithmeticexpressionin ReversePolishNotation.Validoperatorsare +, -, *, /.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->((2+1)*3)->9 ["4","13","5
u012841335·2013-11-30 11:00

LeetCode:Evaluate Reverse Polish Notation

题目链接 Evaluate the value of an arithmetic expression in Reverse Polish Notation.
·2013-11-28 22:00

LeetCode题解：Evaluate Reverse Polish Notation

EvaluateReversePolishNotationEvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Someexamples:["2","1","+","3","*"]->(
MagiSu·2013-11-28 03:00

Reverse Polish Calculator （逆波兰计算器）方案的分析——如何解决问题，从需要到实现

ReversePolishCalculator（逆波兰计算器）方案的分析——如何解决问题，从需要到实现注：文章素材来源于K&R第二版需要实现的功能：（针对用户的期望）1、基本的四则运算2、取模运算*3、其它数学函数的运算。比如三角函数、幂函数、指数函数等*4、能够调用上一步的结果（待补充）用户可能的行为：用户可能的输入（用□代表空格，其它不可见字符使用其转义字符表示）正常输入：3□2□-\n3.5
DuanXu1·2013-09-04 23:00

haskell - Functionally solving problems - Heathrow to London

Where we have Reverse Polish notation calculator, we have yet another problem to solve, which is called
joe.bq.wang·2013-04-22 07:00
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