Spurs

摘要： 1. 函数　数组　指针相关 1.1 定义并简单使用指针 c++ // 函数声明 void swap(int &x, int &y); int main() { // 局部变量声明 int a = 100; int b = 200; cout 阅读全文

摘要： 0. 迷之 和 . 箭头（ ）：左边必须为指针； 点号（.）：左边必须为实体。 e.g.1　class e.g.2 struct 阅读全文

摘要： My Stuck in C++ Zhong Liang Xiang Oct. 1st, 2017 这个专题记录了对于我而言, c++迷一样的东西. 阅读全文

摘要： Given an array of integers and an integer $k$, find out whether there are two distinct indices $i$ and $j$ in the array such that nums[i] = nums[j] an 阅读全文

摘要： Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the arr 阅读全文

摘要： 189. Rotate Array Rotate an array of $n$ elements to the right by $k$ steps. For example, with $n = 7$ and $k = 3$, the array is rotated to . Related 阅读全文

摘要： 169. Majority Element Given an array of size $n$, find the majority element. The majority element is the element that appears more than times. You may 阅读全文

摘要： 122. Best Time to Buy and Sell Stock II 为获得最高收益而多次买卖,但只能像这样买卖: $O(n)$ time, $O(1)$ space. 自家代码: 阅读全文

摘要： 167. Two Sum II Input array is sorted Given an array of integers that is already sorted in ascending order , find two numbers such that they add up to 阅读全文

摘要： 121. Best Time to Buy and Sell Stock Example 1: Example 2: 同53题. The maximum (minimum) subarray problem. 用到$DP$. 这题是重点 : 就是序列从A[0]开始计算, 不符合条件就清0, 从断处继 阅读全文