摘要： 1、局部静态变量(1)生存期：存储在静态数据区，本模块运行结束不会销毁，程序结束时才销毁。(2)初始化：当且仅当本模块初次运行时初始化。2、外部静态变量/静态函数限制全局变量的作用域为本文件。3、静态数据成员/成员函数表示该成员/成员函数属于此类，不依附与具体对象。常用于生成对象的计数器。 阅读全文

摘要： 形式：在成员函数后面加上const限定词，表示不会修改对象内容。例如Circle类：class Circle{ double r;public: Circle(double newr) { r = newr; } double get_r() const ... 阅读全文

摘要： Search for a RangeGiven a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexity ... 阅读全文

摘要： Valid SudokuDetermine if a Sudoku is valid, according to:Sudoku Puzzles - The Rules.The Sudoku board could be partially filled, where empty cells are ... 阅读全文

摘要： Fraction to Recurring DecimalGiven two integers representing the numerator and denominator of a fraction, return the fraction in string format.If the ... 阅读全文

摘要： Count and SayThe count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ...1is read off as"one 1"or11.11is r... 阅读全文

摘要： Combination Sum IIGiven a collection of candidate numbers (C) and a target number (T), find all unique combinations inCwhere the candidate numbers sum... 阅读全文

摘要： First Missing PositiveGiven an unsorted integer array, find the first missing positive integer.For example,Given[1,2,0]return3,and[3,4,-1,1]return2.Yo... 阅读全文

摘要： Trapping Rain WaterGivennnon-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to tr... 阅读全文

摘要： Maximum GapGiven an unsorted array, find the maximum difference between the successive elements in its sorted form.Try to solve it in linear time/spac... 阅读全文