方法二: classSolution:defevalRPN(self, tokens: List[str]) ->int: symbol= ['+','-','*','/'] stack=[]fortintokens:iftinsymbol: stack.append(self.eval(stack.pop(-2), stack.pop(), t))else: stack.append(int(t))returnstack[-1]defeval(self, x, y, symbol):ifsymbol =='+':ret...
题意比较简单,容易想到的方式是定义一个前缀和后缀数组,用来分别存储i元素之前的所有元素乘积和i元素之后的所有元素乘积。 classSolution{public:vector<int>productExceptSelf(vector<int>& nums){intn = nums.size();vector<int>L(n,1),R(n,1);for(inti =1;i < n;i ++ ) L[i] = L[i -1] * ...
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简介:【leetcode报错】 leetcode格式问题解决:error: stray ‘\302’ in program [solution.c] 一、情景再现 二、报错原因 该错误是指源程序中有非法字符,需要将非法字符去掉。 一般是由于coder1.使用中文输入法或者2.从别的地方直接复制粘贴代码造成的。
1：假如有三个孩子[A、B、C]对应的评分是 [1, 6, 5]此时的分配结果是 [1, 2, 1] 不是 [1, 3, 1]，因为B和A相比B评分高所以给B多给一个，B再与C相比时虽然评分高但此时B已经有两个糖果C此时只有一个所有不用再给B糖果。这...
typedef pair<int,int>pii;classSolution{public:intminimumObstacles(vector<vector<int>>&grid){int n=grid.size();int m=grid[0].size();vector<vector<int>>dis(n,vector<int>(m,INT_MAX));queue<pii>cur,nxt;cur.emplace(0,0);dis[0][0]=0;int fx[4][2]={{0,1},{1,0},{-1,0},...
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Parts of the problems don't provide C interface for solution, so I accomplished them with C++ Language. CompileCfiles using command: CompileC++files using command: g++ -std=c++11 -Wall src/bar.cpp -o bar OR You can build all the files usingmake(Use MinGW GCC and GNU Make on Windows)....
impl Solution { pub fn eval_rpn(tokens: Vec<String>) -> i32 { let mut stack: Vec<i32> = Vec::new(); for token in tokens { // 能解析为数字表示为数字,否则为字符 if let Ok(val) = token.parse::<i32>() { stack.push(val); } else { // 注意先栈顶元素为右操作数 let right_...
public class Solution { public String reverseWords(String s) { // 使用trim()方法去除字符串前后的空格 s = s.trim(); // 使用StringBuilder来存储结果,避免频繁的字符串拼接操作 StringBuilder sb = new StringBuilder(); // 定义一个双指针,分别指向字符串的开头和末尾 int start = 0; int end = s....