How to Solve Remove Sub- Folders from the Filesystem Problem
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Remove Sub-Folders from the Filesystem
Given a list of folders folder, return the folders after removing all sub-folders in those folders. You may return the answer in any order. If a folder[i] is located within another folder[j], it is ca...
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Understanding the Remove Sub- Folders from the Filesystem Problem
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Problem Statement
Given a list of folders folder, return the folders after removing all sub-folders in those folders. You may return the answer in any order. If a folder[i] is located within another folder[j], it is called a sub-folder of it. A sub-folder of folder[j] must start with folder[j], followed by a "/". For example, "/a/b" is a sub-folder of "/a", but "/b" is not a sub-folder of "/a/b/c". The format of a path is one or more concatenated strings of the form: '/' followed by one or more lowercase English letters. For example, "/leetcode" and "/leetcode/problems" are valid paths while an empty string and "/" are not.
Remove Sub-Folders from the Filesystem
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Examples
folder = ["/a","/a/b","/c/d","/c/d/e","/c/f"]["/a","/c/d","/c/f"]Folders "/a/b" is a subfolder of "/a" and "/c/d/e" is inside of folder "/c/d" in our filesystem.
folder = ["/a","/a/b/c","/a/b/d"]["/a"]Folders "/a/b/c" and "/a/b/d" will be removed because they are subfolders of "/a".
folder = ["/a/b/c","/a/b/ca","/a/b/d"]["/a/b/c","/a/b/ca","/a/b/d"]Constraints
1 <= folder.length <= 4 * 1042 <= folder[i].length <= 100folder[i] contains only lowercase letters and '/'.folder[i] always starts with the character '/'.Each folder name is unique.How Interview Coder Helps with Leetcode Problems
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