Replace Words | Using HashSet | Uber | Leetcode 648 | codestorywithMIK
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This is the 13th Video of our Playlist "Hash Map/Set : Popular Interview Problems" by codestorywithMIK
In this video we will try to solve a good practice Map problem : Replace Words | Using HashSet | Uber | Leetcode 648 | codestorywithMIK
I will explain the intuition so easily that you will never forget and start seeing this as cakewalk EASYYY.
We will do live coding after explanation and see if we are able to pass all the test cases.
Also, please note that my Github solution link below contains both C++ as well as JAVA code.
Problem Name : Replace Words | Using HashSet | Uber | Leetcode 648 | codestorywithMIK
Company Tags : UBER
My solutions on Github(C++ & JAVA) : https://github.com/MAZHARMIK/Intervie...
Leetcode Link : https://leetcode.com/problems/replace...
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Summary :
The approach to solving the problem involves replacing words in a sentence with their shortest root forms from a given dictionary. The solution uses the following steps:
Dictionary Conversion: The dictionary list is converted into a Set for efficient lookup. This allows checking for the existence of a root word in constant time.
findRoot Method: This helper method iterates over all possible prefixes (substrings starting from the beginning) of a given word. It returns the first prefix found in the dictionary Set. If no prefix is found, it returns the original word.
Sentence Processing: The sentence is split into individual words using the split method. Each word is processed using the findRoot method to find and replace it with its root form if applicable.
Result Construction: The processed words are appended to a StringBuilder to efficiently build the final result string. The trailing space is removed before returning the result.
By using a set for the dictionary and processing each word independently, the solution ensures both efficiency and simplicity, making it suitable for handling large inputs.
✨ Timelines✨
00:00 - Introduction
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