How would you remove duplicate lines from a file that is  much too large to fit in memory? The duplicate lines are not necessarily adjacent, and say the file is 10 times bigger than RAM. A better solution is to use HashSet to store each line of input…

To remove duplicate lines just press Ctrl + F, select the “Replace” tab and in the “Find” field, place: ^(.*?)$\s+?^(?=.*^\1$). In search mode check “Regular expression” and click on replace all.…

Compare, sort, and delete duplicate lines in Notepad ++ Organize Lines: Since version 6.5.2 the app has a native functionality to draw lines Simply go to Edit> Line Operations> Sort Lines as Integer AscendingThere are also other options to raffle in…

Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexicographical order among all possible results. Example: Given "bcabc&q…

Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexicographical order among all possible results. Example: Given "bcabc&q…

Remove Duplicate Letters I Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. Example: Given "bcabc"Return "abc" Given "cbacdcbc"Return "abcd&qu…

原题链接在这里:https://leetcode.com/problems/remove-duplicate-letters/ 题目: Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexic…

https://leetcode.com/problems/remove-duplicate-letters/ Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexicographical o…

316. Remove Duplicate Letters Total Accepted: 2367 Total Submissions: 12388 Difficulty: Medium Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your resu…

Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexicographical order among all possible results. Example 1: Input: "bcab…