DataStruct

背景 为什么要刷leetcode？ 从两个方面可以展开说明。 刷leetcode有什么好处？ 为什么可以做到刷leetcode？ 刷leetcode有什么好处？ 提高编程能力:LeetCode上的题目涵盖了许多算法和数据结构,可以通过刷题提高自己的编程能力，如锻炼快速编程与调试的能力与代码优化能力 2.准备面试:大多数IT与互联网公司的面试都会考算法题,LeetCode上面的题目是最接近面试题的练习 ...

array define An array is collection of items stored at contiguous memory locations. The idea is to store multiple items of same type together. This makes it easier to calculate the position of each element by simply adding an offset to a base value, i.e., the memory location of the first element of the array (generally denoted by the name of the array). complexity space O(n) time write by index write by index: O(1) ...