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\ 将下一个字符标记为一个特殊字符、或一个原义字符、或一个 向后引用、或一个八进制转义符。例如，'n' 匹配字符 "n"。'\n' 匹配一个换行符。序列 '\\' 匹配 "\" 而 "\(" 则匹配 "("。 ^ 匹配输入字符串的开始位置。如果设置了 RegExp 对象的 Multiline 属性，^ 也匹配 '\n' 或 '\r' 之后的位置。 $ 匹配输入字符串的结束...

Next Greater Element I原题目：You are given two arrays (without duplicates) nums1 and nums2 where nums1’s elements are subset of nums2. Find all the next greater numbers for nums1's elements in the corres...

Island Perimeter原题目：You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid cells are connected horizontally/vertically (not diagonally). The...

Toeplitz Matrix原题目：A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element.Now given an M x N matrix, return True if and only if the matrix is Toeplitz.翻译：如果从左上角到右下角的...

Reshape the Matrix原题目：In MATLAB, there is a very useful function called 'reshape', which can reshape a matrix into a new one with different size but keep its original data.You're given a matrix repres...