Evaluating Simple C Expressions The task in this problem is to evaluate a sequence of simple C expressions, buy you need not know C to solve the problem! Each of the expressions will appear on a line by itself and will contain no more than 110 charac…

 Evaluating Simple C Expressions  The task in this problem is to evaluate a sequence of simple C expressions, buy you need not know C to solve the problem! Each of the expressions will appear on a line by itself and will contain no more than 110 char…

由于没有括号,只有+,-,++,--,优先级简单,所以处理起来很简单. 题目要求计算表达式的值以及涉及到的变量的值. 我这题使用stl的string进行实现,随便进行练手,用string的erase删掉全部空格,然后对++.--进行处理然后删去,最后就只剩简单式子了,简单循环下就出来了. 这里有几个坑点: 1.erase函数删除字符后,后面字符的下标都会发生变化,刚开始使用i++去检查空格,结果删除后会跳掉字符. 2.++.--的后缀处理要注意,我开了两个数组放后缀运算的. 3.输出的变量值是当…

option=com_onlinejudge&Itemid=8&page=show_problem&problem=4342">题目链接:uva 1567 - A simple stone game 题目大意:给定K和N.表示一堆石子有N个.先手第一次能够取1~N-1个石子,取到最后一个石子的人胜利,单词每次操作时,取的石子数不能超过对手上一次取的石子数m的K倍. 问先手能否够必胜.能够输出最小的首次操作. 解题思路:这题想了一天,又是打表找规律.又是推公式的,楞是…

题意 模拟二进制数字的位运算 思路 手写 位运算函数 要注意几个坑点 一元运算符的优先级 大于 二元 一元运算符 运算的时候 要取消前导0 二元运算符 运算的时候 要将两个数字 数位补齐 输出的时候 也要 注意 要取消前导0 特别要注意 如果输入的算式 只有一个数字 那么要将 这个数字的前导0 取消 再输出 AC代码 #include <cstdio> #include <cstring> #include <ctype.h> #include <cstdlib&…

题目 Volume 0. Getting Started 开始10055 - Hashmat the Brave Warrior 10071 - Back to High School Physics 10300 - Ecological Premium 458 - The Decoder 494 - Kindergarten Counting Game 414 - Machined Surfaces 490 - Rotating Sentences 445 - Marvelous Mazes…

112 - Tree Summing 题目大意:给出一个数,再给一颗树,每个头节点的子树被包含在头节点之后的括号里,寻找是否有从头节点到叶子的和与给出的数相等,如果有则输出yes,没有输出no! 解题思路:按照括号匹配的原则,调用栈,求从头节点到叶子节点的和! 解题代码: //Author :Freetion //file :112 - Tree Summing #include <stdio.h> #include <iostream> #include <stack>…

各种杂题,水题,模拟,包括简单数论. 1001 A+B 1002 A+B+C 1009 Fat Cat 1010 The Angle 1011 Unix ls 1012 Decoding Task 1019 Grandpa's Other Estate 1034 Simple Arithmetics 1036 Complete the sequence! 1043 Maya Calendar 1054 Game Prediction 1057 Mileage Bank 1067 Rails 10…

Regular expressions are used to search and manipulate the text, based on the patterns. Most of the Linux commands and programming languages use regular expression. Grep command is used to search for a specific string in a file. Please refer our earli…

hdu 2451 Simple Addition Expression Problem Description A luxury yacht with 100 passengers on board is sailing on the sea in the twilight. The yacht is ablaze with lights and there comes out laughers and singing from the hall where an evening party i…