[摘要] Given an absolute path for a file (Unix-style), simplify it.For example,path="/home/", =>"/home"path="/a/./b/../../c/", =>"/c"路徑化簡，.表示當前目錄..表示上一級目錄。模擬[全文]
[摘要] Given amxnmatrix, if an element is 0, set its entire row and column to 0. Do it in place.click to show follow up.Follow up:Did you use extra space?A s[全文]
