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enum 枚举enum spectrum{red, orange, yellow, green, blue, violet, indigo, u...
1.nones and free tier EC2 just like a computer with only an operating sy...
文件 cdcd 去文件夹cd g 按tab自动补全cd g* 去文件夹cd g*4 去文件夹pwd 路径present working dir...
QuestionGiven two binary strings, return their sum (also a binary string...
1 单个文件是不能调试的，只有工程才能调试2 文件路径不要有中文，或者空格，否则断点不会停下3 setting complier中勾上：
QuestionGiven a non-negative integer represented as a non-empty array of...
QuestionGiven a string s consists of upper/lower-case alphabets and empt...
QuestionFind the contiguous subarray within an array (containing at leas...
QuestionThe count-and-say sequence is the sequence of integers with the ...