actor6

分类

C++(3) leetcode(python)(17) 比赛(1)

/ 注册

全部文章（共21篇）

可变形参-initializer_list

initializer_list类型主要用于当函数实参数量未知但全部实参的类型都相同时，它时一种标准库类型。其主要操作包括：initializer_list<T>lst; //默认初始化T类型元素的空列表 initializer_list<T>lst{a,b,c...}; /...

C++

2020-11-13

0 650

C11新标准 - 范围for语句

为了简化for语句的操作,c++引入了一个更加简单的for语句操作-**范围for语句**。常规的for语句： for(initializer; condition; cxpression) statement //eg: for(auto i = 0; i < n; i++) ...

C++ 范围for语句

2020-11-12

0 562

指针常量和常量指针

指针常量(const int *ptr)：　　指针所指向的对象是一个常量，无法通过访问该指针来改变该对象的值，但是我们可以通过其他方式去改变该对象，比如直接改变该对象的值。 #include<iostream>int main() { int i = 42; ...

2020-11-09

0 419

leetcode-508 Most Frequent Subtree Sum

Given the root of a tree, you are asked to find the most frequent subtree sum. The subtree sum of a node is defined as the sum of all the node values ...

2020-11-07

0 440

leetcode-609 Find Duplicate File in System

Given a list of directory info including directory path, and all the files with contents in this directory, you need to find out all the groups of dup...

2020-11-07

0 431

leetcode-895 Maximum Frequency Stack

Implement FreqStack, a class which simulates the operation of a stack-like data structure. FreqStack has two functions:　　　push(int x), which pushes a...

2020-11-06

0 474

leetcode-1072 Flip Columns For Maximum Number of Equal Rows

Given a matrix consisting of 0s and 1s, we may choose any number of columns in the matrix and flip every cell in that column. Flipping a cell changes...

2020-11-04

0 446

leetcode-347 Top K Frequent Elements

Given a non-empty array of integers, return the k most frequent elements. 输入输出实例： Input: nums = [1,1,1,2,2,3], k = 2 Output: [1,2] 本题比较简单，...

2020-11-04

0 373

leetcode-451 Sort Characters By Frequency

Given a string, sort it in decreasing order based on the frequency of characters. 输入输出实例： Input: "tree" Output: "eert" E...

2020-11-03

0 465

leetcode-739 Daily Temperatures

Given a list of daily temperatures T, return a list such that, for each day in the input, tells you how many days you would have to wait until a warme...

2020-11-03

0 409