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Tag: hashmap

Retrieve word(s) from characters using map

I am trying to understand Collections and Stream. I have split the sentence below and kept the position of each letter (I ignored space/blank): “Hello Word!” Results: [H, e, l, l, o, , W, o, r, d, !] (charsList) {!=[10], r=[8], d=[9], e=[1], W=[6], H=[0], l=[2, 3], o=[4, 7]} (charsIndex) How can I sort the characters and rebuild my word

The longest Substring without Repeating Characters

I’m starting out on LeetCode, and am currently working on the problem Longest Substring Without Repeating Characters. Given a string s, find the length of the longest substring without repeating characters. Input: s = “abcabcbb” Output: 3 Explanation: The answer is “abc”, with the length of 3. I feel like my approach should work, but for some reason it fails

Search for all po files in a directory and its subdirectories and create a Hashmap containing the filepaths as value and its directory as key

I want to search for all .po files in a directory and add them to a HashMap. My directories looks like the following: How can I represent/search these files with the help of java-Streams and HashMap<String, List<File>>, with en/de/it.po as a List<File> type and the respective directory root of these files dir1subdir-1**subdir-n as a key? I’ve tried the following solution

Tranforming a Map containing Sets into a Map of Set-Sizes [closed]

Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed last month. Improve this question This is my hash map: How can I get a new HashMap that will