Basic Calculator II 题目: Implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, +, -, *, / operators and empty spaces . The integer division should ...[LeetCode]227. Basic Calculator II 一、题目 Implement a basic ...
Implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers,+,-,*,/operators and empty spaces. The integer division should truncate toward zero. You may assume that the given expression is always valid. Some examples: "3+2*2" ...
和这个一样:Basic Calculator I 代码 classExpressionTransformation{public:stringtrans_to_postfix_expression_to_s(string);// 将得到的表达式转化为后缀表达式longlongintcalculate_from_postfix_expression();// 依据后缀表达式计算值private: vector<string> ans_vector_post;// 存放后缀表达式string post_string;//...
个人博客:http://fuxuemingzhu.me/ 题目地址:https://leetcode.com/problems/basic-calculator-ii/description/ 题目描述: Implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, +, -, *, / operators and empty spaces . The integer...
Basic Calculator(LeetCode) Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or minus sign -, ...leetcode Basic Calculator II 学过数据结构之后一直想把里面使用栈完成的表达式运算给完成,直达今天在...
class Solution { public: int calculate(string s) { int m=s.length(); int num=0; char op='+'; stack<int> s1; for(int i=0;i<m;i++){ if(s[i]>='0'){ num=num*10+s[i]-'0'; } if((s[i]<'0'&&s[i]!=' ')||i==m-1){ ...
Baozi Training Leetcode solution 772 的主要算法是什么? 这个解决方案的时间复杂度是多少? 如何处理算式中的优先级问题? Problem Statement Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or minus sign...
val += jianval; } return val; } private static int GeberateJianj(string exp) { if(exp.Contains("*")==false && exp.Contains("/")==false) { return Convert.ToInt32(exp); } string[] num = new string[2]{"",""}; ...
basic_cal.png /** * By utilizing a doubly linked list... */typedefstructNodeStruct{intval;structNodeStruct*next;structNodeStruct*pre;}*Node;NodeNodeCreate(intval){Node x=(Node)malloc(sizeof(*x));x->val=val;x->next=x->pre=NULL;returnx;}typedefstruct{intcount;Node head,tail;}*Queue...
class Solution{public:intcalculate(string s){longres=0,num=0;stack<int>st;charop='+';for(inti=0;i<s.size();++i){if(s[i]>='0')num=num*10+s[i]-'0';if((s[i]<'0'&&s[i]!=' ')||(i==s.size()-1)){if(op=='+')st.push(num);if(op=='-')st.push(-num);if(...